CONTRACT DOCUMENTS
AND
SPECIFICATIONS
FOR
WERNER ELEMENTARY SCHOOL
PARKING LOT AND PLAY AREA
SITE IMPROVEMENT PROJECT
FORT COLLINS, COLORADO
Poudre School District R-1
February 2013
OWNER:
POUDRE SCHOOL DISTRICT R-1
2407 LAPORTE AVENUE
FORT COLLINS, COLORADO 80521
(970) 490-3600
JERRY GARRETSON
PROJECT MANAGER
ENGINEER:
ANDERSON CONSULTING ENGINEERS, INC.
375 E. HORSETOOTH ROAD, BUILDING 5
FORT COLLINS, COLORADO 80525
(970) 226-0120
GREG KOCH, P.E.
PRINCIPAL ENGINEER
ACE PROJECT NO. COPR144
TABLE OF CONTENTS
SECTION
BID INFORMATION
00100
00300
00310
00320
00400
00420
00430
INSTRUCTIONS TO BIDDERS
BID FORMS
BID PROPOSAL FORM
QUANTITY SCHEDULE
SUPPLEMENTS TO BID FORMS
STATEMENT OF BIDDER'S QUALIFICATIONS
SCHEDULE OF SUBCONTRACTORS
CONTRACT DOCUMENTS
00500
00510
00520
00530
AGREEMENT FORMS
NOTICE OF AWARD
AGREEMENT
NOTICE TO PROCEED
00600
00610
00615
00630
00635
00640
00650
00651
00660
00670
BONDS AND CERTIFICATES
PERFORMANCE BOND
PAYMENT BOND
CERTIFICATE OF INSURANCE
CERTIFICATE OF SUBSTANTIAL COMPLETION
CERTIFICATE OF FINAL ACCEPTANCE
LIEN WAIVER RELEASE (CONTRACTOR)
LIEN WAIVER RELEASE (SUBCONTRACTOR)
CONSENT OF SURETY
APPLICATION FOR EXEMPTION CERTIFICATE
CONDITIONS OF THE CONTRACT
00700
00800
00900
00950
00960
GENERAL CONDITIONS
SUPPLEMENTARY CONDITIONS
ADDENDA, MODIFICATIONS, AND PAYMENT
CONTRACT CHANGE ORDER
APPLICATION FOR PAYMENT
DIVISION 1 - GENERAL REQUIREMENTS
01110
01140
01180
01270
01310
01320
SUMMARY OF WORK
CONTRACTOR’S USE OF PREMISES
UTILITY SOURCES
MEASUREMENT AND PAYMENT
PROJECT MEETINGS
CONSTRUCTION SCHEDULES
01330
01425
01450
01555
01635
01650
01710
01720
01745
01780
SUBMITTALS
STANDARD REFRENCES
MATERIALS TESTING
TRAFFIC REGULATION
SUBSTITUTIONS AND PRODUCT OPTIONS
MATERIAL DELIVERY, STORAGE, AND HANDLING
SITE CONDITIONS
FIELD ENGINEERING AND SURVEYING
ENVIRONMENTAL CONTROLS
CONTRACT CLOSEOUT
DIVISION 2 - SITE WORK
02220
02230
02315
02340
02360
02710
02740
02770
APPENDIX A
REMOVAL OF STRUCTURES AND OBSTRUCTIONS
CLEARING AND GRUBBING
EXCAVATION AND EMBANKMENT
FLY ASH STABILIZATION
EROSION AND SEDIMENT CONTROL
AGGREGATE BASE COURSE
ASPHALT PAVEMENT
SIDEWALK, CURB AND GUTTER, AND
MISCELLANEOUS CONCRETE
“SUBSURFACE EXPLORATION REPORT, PROPOSED PAVEMENT
RECONSTRUCTION WERNER ELEMENTARY SCHOOL”, EARTH
ENGINEERING CONSULTANTS
SECTION 00100
INSTRUCTIONS TO BIDDERS
SECTION 00100
INSTRUCTIONS TO BIDDERS
1.0
DEFINED TERMS.
Terms used in these Instructions to Bidders, which are defined in the Standard General
Conditions of the Construction Contract (No. 1910-8, 1990 ed. with City of Fort Collins
Modifications Rev. 9.94), have the meanings assigned to them in the General Conditions.
The term "Bidder" means one who submits a Bid to OWNER, as distinct from a sub-bidder,
who submits a Bid to Bidder. The terms "Successful Bidder" means the lowest, qualified,
responsible and responsive Bidder to whom OWNER (on basis of OWNER's evaluation as
hereinafter provided) makes an award. The term "Bidding Documents" includes the
Advertisement or Invitation to Bid, Instructions to Bidders, the Bid Form, and the proposed
Contract Documents (including all Addenda issued prior to receipt of Bids).
2.0
COPIES OF BIDDING DOCUMENTS.
2.1. Complete sets of Bidding Documents may be obtained as stated in the Invitation to
Bid. No partial sets will be issued. The Bidding Documents may be examined at the
locations identified in the Invitation to Bid.
2.2. Complete sets of Bidding Documents shall be used in preparing Bids; neither OWNER
nor Engineer assumes any responsibility for errors or misinterpretations resulting from the
use of incomplete sets of Bidding Documents.
2.3. The submitted Bid proposal shall include Sections 00310, 00320, 00420, and 00430
fully executed.
2.4. OWNER and Engineer, in making copies of Bidding Documents available on the above
terms, do so only for the purpose of obtaining Bids on the Work and do not confer a license
or grant for any other use.
3.0
QUALIFICATION OF BIDDERS.
3.1 To demonstrate qualifications to perform the Work, each Bidder must submit at the time
of the Bid opening, a written statement of qualifications including financial data, a summary
of previous experience, previous commitments and evidence of authority to conduct
business in the jurisdiction where the Project is located. Each Bid must contain evidence of
Bidder's qualification to do business in the state where the Project is located or covenant to
obtain such qualification prior to award of the contract. The Statement of Qualifications
shall be prepared on the form provided in Section 00420.
3.2. In accordance with Section 8-159 of the Code of the City of Fort Collins in determining
whether a bidder is responsible, the following shall be considered: (1) The ability, capacity
and skill of the bidder to perform the contract or provide the services required, (2) whether
the bidder can perform the contract or provide the service promptly and within the time
specified without delay or interference, (3) the character, integrity, reputation, judgment,
experience and efficiency of the bidder, (4) the quality of the bidder's performance of
Section 00100 Page 2
previous contracts or services, (5) the previous and existing compliance by the bidder with
laws and ordinances relating to the contract or service, (6) the sufficiency of the financial
resources and ability of the bidder to perform the contract or provide the service, (7) the
quality, availability and adaptability of the materials and services to the particular use
required, (8) the ability of the bidder to provide future maintenance and service for the use
of the subject of the contract, and (9) any other circumstances which will affect the bidder's
performance of the contract.
3.3. Each Bidder may be required to show that he has handled former Work so that no just
claims are pending against such Work. No Bid will be accepted from a Bidder who is
engaged on any other Work which would impair his ability to perform or finance this Work.
3.4. No Bidder shall be in default on the performance of any other contract with Poudre
School District or in the payment of any taxes, licenses or other monies due to Poudre
School District.
4.0
EXAMINATION OF CONTRACT DOCUMENTS AND SITE.
4.1. It is the responsibility of each Bidder, before submitting a Bid, to (a) examine the
Contract Documents thoroughly, (b) visit the site to familiarize himself with local conditions
that may in any manner affect cost, progress or performance of the Work, (c) familiarize
himself with federal, state and local laws, ordinances, rules and regulations that may in any
manner affect cost, progress or performance of the Work, (d) study and carefully correlate
Bidder's observations with the Contract Documents, and (e) notify Engineer of all conflicts,
errors or discrepancies in the Contract Documents.
4.2. Reference is made to the Supplementary Conditions for identification of: Subsurface
and Physical Conditions SC-4.2.
4.3. The submission of a Bid will constitute an incontrovertible representation by Bidder that
Bidder has complied with every requirement of this Article 4, that without exception the Bid
is premised upon performing and furnishing the Work required by the Contract Documents
and such means, methods, techniques, sequences or procedures of construction as may be
indicated in or required by the Contract Documents, and that the Contract Documents are
sufficient in scope and detail to indicate and convey understanding of all terms and
conditions for performance and furnishing of the Work.
5.0
INTERPRETATIONS AND ADDENDA.
5.1. All questions about the meaning or intent of the Bidding Documents are to be
submitted in writing to the Engineer and the OWNER. Interpretation or clarifications
considered necessary in response to such questions will be issued only by Addenda.
Questions received less than seven days prior to the date for opening of the Bids may not
be answered. Only questions answered by formal written Addenda will be binding. Oral
and other interpretations or clarifications will be without legal effect.
5.2. All questions concerning the scope of this project should be directed to the Engineer.
Questions regarding submittal of bids should be directed to PSD, Materials Management
Department.
Section 00100 Page 3
5.3. Addenda may also be issued to modify the Bidding Documents as deemed advisable
by OWNER or Engineer.
5.4. Addenda will be mailed or delivered to all parties recorded by the OWNER as having
received the Bidding documents.
6.0
BID SECURITY.
6.1. Each Bid must be accompanied by Bid Security made payable to OWNER in the
amount stated in the Invitation to Bid. The required security must be in the form of a
certified or bank cashier's check payable to OWNER or a Bid Bond on the form enclosed
herewith. The Bid Bond must be executed by a surety meeting the requirements of the
General Conditions for surety bonds.
6.2. The Bid Security of the successful Bidder will be retained until such Bidder has
executed the Agreement and furnished the required contract security, whereupon Bid
Security will be returned. If the successful Bidder fails to execute and deliver the
Agreement and furnish the required contract security within 15 days of the Notice of Award,
OWNER may annul the Notice of Award and the Bid Security of that Bidder will be forfeited.
The Bid Security of other Bidders whom OWNER believes to have reasonable chance
receiving the award may be retained by OWNER until the earlier of the seventh day after the
effective date of the Agreement or the thirty-first day after the Bid Opening, whereupon Bid
Security furnished by such Bidders will be returned. Bid Security with Bids which are not
competitive will be returned within seven days after the Bid opening.
7.0
CONTRACT TIME.
The number of days within which, or the date by which the Work is to be substantially
complete and also completed and ready for Final Payment (the Contract Times) are set
forth in the Agreement.
8.0
LIQUIDATED DAMAGES.
Provisions for liquidated damages are set forth in the Agreement.
9.0
SUBSTITUTE ("OR EQUAL") MATERIAL AND EQUIPMENT.
The Contract, if awarded, will be on the basis of material and equipment described on the
Drawings or specified in the Specifications without consideration of possible substitute or "or
equal" items. Whenever it is indicated on the Drawings or specified in the Specifications
that a substitute or "or equal" item of material or equipment may be furnished or used by
CONTRACTOR if acceptable to Engineer, application for such acceptance will not be
considered by Engineer until after the "effective date of the Agreement". The procedure for
submittal of any such application by CONTRACTOR and consideration by Engineer is set
forth in the General Conditions which may be supplemented in the General Requirements.
10.0
SUBCONTRACTORS, SUPPLIERS AND OTHERS.
10.1. Each Bidder shall submit at the Bid opening to OWNER a list of principal
subcontractors he proposes to use in the Work. Refer to Section 00430 contained within
these Documents.
Section 00100 Page 4
10.2. If OWNER or Engineer after due investigation has reasonable objection to any
proposed Subcontractor, either may, before the Notice of Award is given, request the
apparent successful Bidder to submit an acceptable substitute without an increase in Bid
price. If the apparent successful Bidder declines to make any substitution, OWNER may
award the contract to the next lowest responsive and responsible Bidder that proposes to
use acceptable subcontractors. Subcontractors, suppliers, other persons or organization
listed and to whom OWNER or Engineer does not make written objection prior to the giving
of the Notice of Award will be deemed acceptable to OWNER and ENGINEER subject to
revocation of such acceptance after the effective date of the Agreement as provided in the
General Conditions.
10.3. CONTRACTOR shall not be required to employ any subcontractor, supplier or other
persons or organizations against whom he has reasonable objection. The use of
subcontractors listed by the Bidder and accepted by OWNER prior to the Notice of Award
will be required in the performance of the Work.
11.0
BID FORMS
11.1. Copies of the Bid Forms are bound in the Contract Documents which may be retained
by the Bidder. Separate unbound copies are enclosed for submission with the Bid.
11.2. Bid Forms must be complete in ink or typed. All lump sum prices on the form must be
stated in words and numerals; in case of conflict, words will take precedence. Unit prices
shall govern over extensions of sums.
11.3. Bids by corporations must be executed in the corporate name by the president or a
vice-president (or other appropriate officer accompanied by evidence of authority to sign)
and the corporate seal shall be affixed and attested by the secretary or an assistant
secretary. The corporate address and state of incorporation shall be shown below the
corporate name.
11.4. Bids by partnerships must be executed in the partnership name and signed by a
partner, his title must appear under his signature and the official address of the partnership
must be shown below the signature.
11.5. Bids by joint venture shall be signed by each participant in the joint venture or by an
authorized agent of each participant. The full name of each person or company interested
in the Bid shall be listed on the Bid Form.
11.6. The Bid shall contain an acknowledgment of receipt of all Addenda (the numbers of
which must be filled in on the Bid Form).
11.7. No alterations in Bids, or in the printed forms therefore, by erasures, interpolations, or
otherwise will be acceptable unless each such alteration is signed or initialed by the Bidder;
if initialed, OWNER may require the Bidder to identify any alteration so initialed.
11.8. The address and telephone number for communications regarding the Bid shall be
shown.
Section 00100 Page 5
12.0
BID PRICING.
Bids must be priced as set forth in the Bid Proposal Form or Forms.
13.0
SUBMISSION OF BIDS.
13.1. Bids shall be submitted at the time and place indicated in the Invitation to Bid and
shall be enclosed in an opaque sealed envelope marked with the Project title, Bid No., and
name and address of the Bidder and accompanied by the Bid Proposal Form, Schedule of
Quantities, Statement of Bidders Qualifications, and Schedule of Subcontractors as required
in Section 00430. If the Bid is sent through the mail or other delivery system, the sealed
envelope shall be enclosed in a separate envelope with the notation "BID ENCLOSED" on
the face of it.
13.2. Bids shall be deposited at the designated location prior to the time and date for
receipt of Bids indicated in the Invitation to Bid, or any extension thereof made by
addendum. Bids received after the time and date for receipt of Bids will be returned
unopened. Bidder shall assume full responsibility for timely delivery at the location
designated for receipt of Bids.
13.3. Oral, telephonic, telegraphic, or facsimile Bids are invalid and will not receive
consideration.
13.4. No Bidder may submit more than one Bid. Multiple Bids under different names will
not be accepted from one firm or association.
14.0
MODIFICATION AND WITHDRAWAL OF BIDS.
14.1. Bids may be modified or withdrawn by an appropriate document duly executed (in a
manner that a Bid must be executed) and delivered to the place where Bids are to be
submitted at any time prior to the opening of Bids.
14.2. Bids may also be modified or withdrawn in person by the Bidder or an authorized
representative provided he can prove his identity and authority at any time prior to the
opening of Bids.
14.3. Withdrawn Bids may be resubmitted up to the time designated for the receipt of Bids
provided that they are then fully in conformance with these Instructions to Bidders.
15.0
OPENINGS OF BIDS.
Bids will be opened and (unless obviously non-responsive) read aloud publicly as indicated
in the Invitation to Bid. An abstract of the amounts of the Base Bids and major alternates (if
any) will be made available after the opening of Bids.
16.0
BIDS TO REMAIN OPEN SUBJECT TO ACCEPTANCE.
All Bids shall remain open for forty-five (45) days after the day of the Bid Opening, but
OWNER may, in his sole discretion, release any Bid and return the Bid Security prior to that
date.
Section 00100 Page 6
17.0
AWARD OF CONTRACT.
17.1. OWNER reserves the right to reject any and all Bids, to waive any and all informalities
not involving price, time or changes in the Work, to negotiate contract terms with the
Successful Bidder, and the right to disregard all nonconforming, nonresponsive, unbalanced
or conditional Bids. Also, OWNER reserves the right to reject the Bid of any Bidder if
OWNER believes that it would not be in the best interest of the Project to make an award to
that Bidder, whether because the Bid is not responsive or the Bidder is unqualified or of
doubtful financial ability or fails to meet any other pertinent standard or criteria established
by OWNER. Discrepancies between the indicated sum of any column of figures and the
correct sum thereof will be resolved in favor of the correct sum.
17.2. In evaluating Bids, OWNER will consider the qualifications of the Bidders, whether or
not the Bids comply with the prescribed requirements, and such alternates, unit prices and
other data, as may be requested in the Bid Forms or prior to the Notice of Award.
17.3. OWNER may consider the qualification and experience of Subcontractors, Suppliers,
and other persons and organizations proposed for those portions of the Work as to which
the identity of Subcontractors, Suppliers, and other persons and organizations is submitted
as requested by OWNER. OWNER also may consider the operating costs, maintenance
requirements, performance data and guarantees of major items of materials and equipment
proposed for incorporation in the Work when such data is required to be submitted prior to
the Notice of Award.
17.4. OWNER may conduct such investigations as OWNER deems necessary to assist in
the evaluation of any Bid and to establish the responsibility, qualifications and financial
ability of the Bidder's proposed Subcontractors, Suppliers and other persons and
organizations to do the Work in accordance with the Contract Documents to OWNER's
satisfaction within the prescribed time.
17.5. If the Contract is to be awarded, it will be awarded to the lowest responsive and
responsible Bidder whose evaluation by OWNER indicates to OWNER that the award will
be in the best interest of the OWNER. Award shall be made on the evaluated lowest base
bid excluding alternates. The basis for award shall be the lowest Bid total for the Bid
Proposal or, in the case of more than one proposal, for sum of all proposals. Only one
contract will be awarded.
17.6. If the Contract is to be awarded, OWNER will give the Successful Bidder a Notice of
Award within forty-five (45) days after the date of the Bid opening.
18.0
CONTRACT SECURITY.
The General Conditions and the Supplementary Conditions set forth OWNER's
requirements as to performance and other Bonds. When the Successful Bidder delivers the
executed Agreement to the OWNER, it shall be accompanied by the required Contract
Security.
19.0
SIGNING OF AGREEMENT.
When OWNER gives a Notice of Award to the Successful Bidder, it will be accompanied by
the required number of unsigned counterparts of the Agreement with all other written
Section 00100 Page 7
Contract Documents attached. Within fifteen (15) days thereafter, CONTRACTOR shall
sign and deliver the required number of counterparts of the Agreement and attached
documents to OWNER with the required Bonds. Within ten (10) days thereafter, OWNER
shall deliver one fully signed counterpart to CONTRACTOR. Each counterpart is to be
accompanied by a complete set of the Drawings with appropriate identification.
20.0
TAXES.
OWNER is exempt from Colorado State Sales and Use Taxes on materials and equipment
to be incorporated in the Work. Said taxes shall not be included in the Contract Price.
Reference is made to the General and Supplementary Conditions.
21.0
RETAINAGE.
Provisions concerning retainage are set forth in the Agreement.
22.0
PURCHASING RESTRICTIONS.
Purchasing restrictions: The Bidder's authorized signature of this Bid assures the Bidder's
compliance with the PSD’s purchasing restrictions. A copy of the resolutions are available
for review in the Materials Management Department.
A.
23.0
Cement Restrictions: City of Fort Collins Resolution 91-121 requires that suppliers
and producers of cement or products containing cement to certify that the cement
was not made in cement kilns that burn hazardous waste as a fuel.
COLLUSIVE OR SHAM BIDS.
Any Bid deemed by PSD in its sole discretion to be a collusive or sham Bid will be rejected
and reported to authorities as such. Your authorized signature of this Bid assures that such
Bid is genuine and is not a collusive or sham Bid.
24.0
BID RESULTS.
For information regarding results for individual Bids send a self-addressed, self-stamped
envelope and a Bid tally will be mailed to you. Bid results will be posted in the Purchasing
office seven (7) days after the Bid Opening.
END OF SECTION
Section 00100 Page 8
SECTION 00300
BID FORMS
00310
Bid Proposal Form
00320
Quantity Schedule
SECTION 00310
BID PROPOSAL FORM
POUDRE SCHOOL DISTRICT
BID PROPOSAL FORM
TO:
Board of Education
Poudre School District
c/o Planning, Design & Construction
2445 LaPorte Avenue
Fort Collins, CO 80521
FROM:
PROJECT IDENTIFICATION: Werner Elementary School Parking Lot and Play Area Site Improvement Project
ACKNOWLEDGMENTS:
The undersigned Bidder acknowledges examination of the following:
a)
Contract Documents
• Drawings dated February 2013
• Contract Documents and Specifications dated February 2013
• Schedule restrictions outlined in the Instructions to Bidders, Agreement and
General Conditions
b)
Project Sites/Existing Conditions
c)
Receipt of Addenda Numbers: #
#
#
, dated
, dated
, dated
AGREEMENTS: The undersigned Bidder agrees to the following:
a)
b)
c)
d)
e)
f)
g)
h)
To hold bid open for 45 calendar days from date of Bid Opening.
To enter into and execute the Construction Agreement within fifteen (15) calendar days of award,
including identified Bonds of Insurance.
To accomplish the Work in accordance with the Contract Documents.
Poudre School District reserves the right to reject any or all bids and to waive informalities.
Poudre School District reserves the right to award separate or single contracts.
Poudre School District reserves the right to award the contract on the basis of either cost or
schedule.
The Contractor agrees to pay the Poudre School District Liquidated Damages according to the
terms, amount(s) and date(s) defined in the Instructions to Bidders, Agreement and General
Conditions.
To reinstate or omit Alternates at the amounts submitted herein for sixty days after Contract Date.
TOTAL BASE BID PRICE:
Werner Elementary School Phase #1:
Dollars ($
)
Dollars ($
)
Werner Elementary School Phase #2:
Werner Elementary School Phase #3:
Dollars ($
)
Section 00310 Page 1
UNIT PRICING:
Unit Price #1:
Remove Turf Sod
Dollars ($
)
Per SF
Unit Price #2:
Remove Concrete
Dollars ($
)
Per SF
Unit Price #3:
Remove Asphalt Speed Humps
Dollars ($
)
Per SF
Unit Price #4:
Remove Asphalt Pavement
Dollars ($
)
Per SF
Unit Price #5:
New Concrete Speed Humps
Dollars ($
)
Per SF
Unit Price #6:
New Vertical Curb and Gutter
Dollars ($
)
Per LF
Unit Price #7:
New 4-ft Concrete Drain Pans, Apron and Transition
Dollars ($
)
Per SF
Unit Price #8:
New 3.5-ft Concrete Drain Pan
Dollars ($
)
Per SF
Unit Price #9:
New 6-ft Concrete Drain Pan, Apron and Ramp Transition
Dollars ($
)
Per SF
Unit Price #10:
New Concrete Sidewalk
Dollars ($
)
Per SF
Unit Price #11:
Aggregate Base Course
Dollars ($
)
Per TON
Unit Price #12:
Hot Bituminous Pavement
Dollars ($
)
Per TON
Unit Price #13:
Fly Ash Stabilization
Dollars ($
)
Per SY
Unit Price #14:
Rock Socks
Dollars ($
)
Per EA
Unit Price #15:
Straw Wattles
Dollars ($
)
Per LF
Unit Price #16:
Signage – Handicap Parking Signs
Dollars ($
)
Per EA
BID CONDITIONS:
1.
, and subject to all conditions thereof, the
In compliance with your Invitation to Bid dated
a **(Corporation, Limited Liability Company, Partnership, Joint
undersigned
Venture, or Sole Proprietor)** authorized to do business in the State of Colorado hereby proposes to
furnish and do everything required by the Contract Documents to which this refers for the construction of all
items shown in the Drawings, listed on the following Quantity Schedule and in the Measurement and
Payment Section (01270).
Section 00310 Page 2
2.
The undersigned Bidder does hereby declare and stipulate that this proposal is made in good faith, without
collusion or connection with any other person or persons Bidding for the same Work, and that it is made in
pursuance of and subject to all the terms and conditions of the Invitation to Bid and Instructions to Bidders,
the Agreement, the detailed Specifications, and the Drawings pertaining to the Work to be done, all of
which have been examined by the undersigned.
3.
All the various phases of Work enumerated in the Drawings and Contract Documents with their individual
jobs and overhead, whether specifically mentioned, included by implication or appurtenant thereto, are to
be performed by the CONTRACTOR and included in the Total Bid Price.
4.
The foregoing prices shall include all labor, materials, transportation, shoring, removal, dewatering,
overhead, profit, insurance, etc., to cover the complete Work in place of the several kinds called for.
5.
Unit Prices provided on this Bid Proposal Form will be used in conjunction with actual quantities of work
performed to determine the price of additional work requested by the OWNER, in writing, that is not
included in the present Drawings or Contract Documents.
6.
Bidder acknowledges that the OWNER has the right to delete items of Work or change quantities at his
sole discretion without affecting the Agreement or prices of any item so long as the deletion or change
does not exceed twenty-five percent (25%) of the total Agreement Price.
RESPECTFULLY SUBMITTED:
Signature
Date
Title
License Number (If Applicable)
(Seal - if Bid is by corporation)
Attest
Address
Telephone
Section 00310 Page 3
SECTION 00320
QUANTITY SCHEDULE
Project:
Werner Elementary - Phase 1
Date:
February 2013
Quantity Schedule
Item
Number
Description
Measurement
Unit
Estimated
Quantity
1
Mobilization
N/A
--
2
Traffic Control
N/A
--
3
Surveying
N/A
--
4
Removal of Turf Sod
SF
5
Remove Concrete
SF
6
Remove Asphalt Speed Humps
SF
7
Remove Asphalt Pavement
SF
8
New Concrete Speed Humps
SF
9
New Vertical Curb & Gutter
LF
10
New 4-foot Concrete Drain Pans, Apron and Transition
SF
11
New 3.5-foot Concrete Drain Pan
N/A
12
New 6-foot Concrete Drain Pan, Apron, and Ramp Transition
SF
13
New Concrete Sidewalk and Transitions
SF
14
Aggregate Base Course
TON
15
Hot Bituminous Pavement - Grades S and SX (including striping)
TON
16
Fly Ash Stabilization
SY
17
Rock Socks
EA
Straw Wattles
LF
18
19
20
Playground Equipment -- Remove and Replace Basketball and
Tetherball Poles and Benches
Signage - Handicap Parking Signs
N/A
--
--
EA
Section 00320 Page 1
SECTION 00320
QUANTITY SCHEDULE
Project:
Werner Elementary - Phase 2
Date:
February 2013
Quantity Schedule
Item
Number
Measurement
Unit
Estimated
Quantity
Mobilization
NA
--
2
Traffic Control
NA
--
3
Surveying
NA
--
4
Removal of Turf Sod
N/A
--
5
Remove Concrete
SF
6
Remove Asphalt Speed Humps
N/A
1
Description
--
7
Remove Asphalt Pavement
SF
8
New Concrete Speed Humps
N/A
--
9
New Vertical Curb & Gutter
N/A
--
10
New 4-foot Concrete Drain Pans, Apron and Transition
N/A
--
11
New 3.5-foot Concrete Drain Pan
N/A
--
12
New 6-foot Concrete Drain Pan, Apron, and Ramp Transition
N/A
--
13
New Concrete Sidewalk and Transitions
N/A
--
14
Aggregate Base Course
TON
15
Hot Bituminous Pavement - Grades S and SX (including striping)
TON
16
Fly Ash Stabilization
17
Rock Socks
EA
18
Straw Wattles
N/A
--
NA
--
N/A
--
19
20
Playground Equipment -- Remove and Replace Basketball and
Tetherball Poles and Benches
Signage - Handicap Parking Signs
SY
Section 00320 Page 2
SECTION 00320
QUANTITY SCHEDULE
Project:
Werner Elementary - Phase 3
Date:
February 2013
Quantity Schedule
Item
Number
Measurement
Unit
Estimated
Quantity
Mobilization
N/A
--
2
Traffic Control
N/A
--
3
Surveying
N/A
--
4
Removal of Turf Sod
N/A
--
1
Description
5
Remove Concrete
SF
6
Remove Asphalt Speed Humps
N/A
--
7
Remove Asphalt Pavement
SF
8
New Concrete Speed Humps
N/A
--
9
New Vertical Curb & Gutter
N/A
--
10
New 4-foot Concrete Drain Pans, Apron and Transition
N/A
--
11
New 3.5-foot Concrete Drain Pan
SF
12
New 6-foot Concrete Drain Pan, Apron, and Ramp Transition
N/A
--
13
New Concrete Sidewalk and Transitions
N/A
--
14
Aggregate Base Course
TON
15
Hot Bituminous Pavement - Grades S and SX (including striping)
TON
16
Fly Ash Stabilization
17
Rock Socks
EA
18
Straw Wattles
N/A
--
N/A
--
N/A
--
19
20
Playground Equipment -- Remove and Replace Basketball and
Tetherball Poles and Benches
Signage - Handicap Parking Signs
SY
Section 00320 Page 3
SECTION 00400
SUPPLEMENTS TO BID FORMS
00420
Statement of Bidder's Qualifications
00430
Schedule of Subcontractors
SECTION 00420
STATEMENT OF BIDDER'S QUALIFICATIONS
All questions must be answered and the data given must be clear and comprehensive. This
statement must be notarized. If necessary, questions may be answered on separate attached
sheets. The Bidder may submit any additional information he desires.
1.
Name of Bidder:
2.
Permanent main office address:
3.
When organized:
4.
If a corporation, where incorporated:
5.
How many years have you been engaged in the contracting business under your present
firm or trade name?
6.
Contracts on hand: (Schedule these, showing the amount of each contract and the
appropriate anticipated dates of completion.)
7.
General character of Work performed by your company:
8.
Have you ever failed to complete any Work awarded to you?
If so, where and why?
9.
Have your ever defaulted on a contract?
If so, where and why?
10.
Are you debarred by any government agency?
If yes, list agency name
11.
List the more important projects recently completed by your company, stating the
approximate cost of each, and the month and year completed, location and type of
construction.
Section 00420 Page 1
12.
List your major equipment available for this contract.
13.
Experience in construction Work similar in importance to this project:
14.
Background and experience of the principal members of your organization, including
officers:
15.
Credit available: $
16.
Bank reference:
17.
Will you, upon request, fill out a detailed financial statement and furnish any other
information that may be required by the OWNER?
18.
Are you licensed as a General CONTRACTOR?
If yes, in what city, county and state?
What class, license and numbers?
19.
Do you anticipate subcontracting Work under this Contract?
If yes, what percent of total contract?
and to whom?
20.
Are any lawsuits pending against you or your firm at this time?
If yes, DETAIL
21.
What are the limits of your public liability? DETAIL:
What company?
22.
What are your company's bonding limitations?
23.
The undersigned hereby authorizes and requests any person, firm or corporation to furnish
any information requested by the OWNER in verification of the recital comprising this
Statement of Bidder's Qualifications.
Section 00420 Page 2
Dated at
this
day of
20
.
Name of Bidder
By:
Title:
State of
)
County of
)
)
being duly sworn deposes and
says that he is
of
(Name of Organization).
and that the answers to the foregoing questions and all statements therein contained are true and
correct.
Subscribed and sworn to before me this
, 20
.
day of
Notary Public
My commission expires
Section 00420 Page 3
SECTION 00430
SCHEDULE OF SUBCONTRACTORS
List all subcontractors who will perform over $10,000.00 of work and state the work item they will be
performing.
ITEM
SUBCONTRACTOR
Section 00430 Page 1
SECTION 00500
AGREEMENT FORMS
00510
Notice of Award
00520
Agreement
00530
Notice to Proceed
SECTION 00510
NOTICE OF AWARD
Date:
TO:
PROJECT:
OWNER:
Werner Elementary School Parking Lot and Play Area Site Improvement Project
Poudre School District R-1
(hereinafter referred to as "the OWNER")
You are hereby notified that your Bid dated
, 20
for the above project
has been considered. You are the apparent successful Bidder and have been awarded an
Agreement for
The Price of your Agreement is
Dollars ($
).
Five (5) copies of each of the proposed Contract Documents (except Drawings) accompany this
Notice of Award. Five (5) sets of the Drawings will be delivered separately or otherwise made
available to you immediately.
You must comply with the following conditions precedent within fifteen (15) days of the date of this
Notice of Award, that is by
, 20
.
1.
2.
You must deliver to the OWNER four (4) fully executed counterparts of the Agreement
including all the Contract Documents. Each of the Contract Documents must bear your
signature on the cover of the page.
You must deliver with the executed Agreement the Contract Security (Bonds) as specified in
the Instructions to Bidders, General Conditions (Article 5.1) and Supplementary Conditions.
Failure to comply with these conditions within the time specified will entitle OWNER to consider
your Bid abandoned, to annul this Notice of Award and to declare your Bid Security forfeited.
Within ten (10) days after you comply with those conditions, OWNER will return to you one (1) fullysigned counterpart of the Agreement with the Contract Documents attached.
Poudre School District R-1
OWNER
By:
Title
Section 00510 Page 1
SECTION 00520
AGREEMENT
THIS AGREEMENT is dated as of the
day of
and shall be effective on the date this AGREEMENT is signed by PSD.
Poudre School District R-1
in the year of 20
(hereinafter called OWNER) and
(hereinafter called CONTRACTOR)
OWNER and CONTRACTOR, in consideration of the mutual covenants hereinafter set forth, agree
as follows:
ARTICLE 1.
WORK
CONTRACTOR shall complete all Work as specified or indicated in the Contract Documents. The
Project for which the Work under the Contract Documents may be the whole or only a part is
defined as the construction of the Werner Elementary School Parking Lot and Play Area Site
Improvement Project and is generally described in Section 01110.
ARTICLE 2.
ENGINEER
The Project has been designed by Anderson Consulting Engineers, Inc. (ACE). ACE has not
been contracted to provide Construction Management Services, nor act as the Engineer for the
construction of this project. The OWNER will assume all duties and responsibilities and will have
the rights and authority assigned to ENGINEER in the Contract Documents in connection with
completion of the Work in accordance with the Contract Documents.
ARTICLE 3.
CONTRACT TIMES
3.1 The Work will be Substantially Complete within fifty-four (54) calendar days after the
starting date set forth in the Notice to Proceed as defined in the General Conditions and completed
and ready for Final Payment and Acceptance in accordance with the General Conditions within sixty
(60) calendar days after the start date set forth in the Notice to Proceed.
Work will be Substantially Complete in accordance with the following milestones at the
critical locations noted below.
3.2. Liquidated Damages. OWNER and CONTRACTOR recognize that time is of the
essence in this Agreement and that OWNER will suffer financial loss if the Work is not completed
within the times specified in paragraph 3.1. above, plus any extensions thereof allowed in
accordance with Article 12 of the General Conditions.
They also recognize the delays, expenses and difficulties involved in proving in a legal proceeding
the actual loss suffered by OWNER if the Work is not completed on time. Accordingly, instead of
requiring any such proof, OWNER and CONTRACTOR agree that as liquidated damages for delay
but not as penalty) CONTRACTOR shall pay OWNER the amounts set forth hereafter.
Section 00520 Page 1
1)
Substantial Completion:
Nine Hundred Fifty Dollars ($950.00) for each calendar day or fraction thereof that
passes after the fifty-four (54) calendar day period for Substantial Completion of the
Work has expired until the Work is Substantially Complete.
2)
Final Acceptance:
After Substantial Completion, Five Hundred Fifty Dollars ($550.00) for each
calendar day or fraction thereof that passes after the sixty (60) calendar day period
for Final Payment and Acceptance has expired until the Work is ready for Final
Payment and Acceptance.
ARTICLE 4.
CONTRACT PRICE
4.1.
OWNER shall pay CONTRACTOR for performance of the Work in accordance with
the Contract Documents in current funds as follows: ($
),
Dollars, in accordance with Section 00310, attached and
incorporated herein by this reference.
ARTICLE 5.
PAYMENT PROCEDURES
CONTRACTOR shall submit Applications for Payment in accordance with Article 14 of the
General Conditions. Applications for Payment will be processed by ENGINEER as provided in the
General Conditions.
5.1. PROGRESS PAYMENTS. OWNER shall make progress payments on account of the
Contract Price on the basis of CONTRACTOR's Application for Payment as recommended by
ENGINEER, once each month during construction as provided below. All progress payments will
be on the basis of the progress of the Work measured by the schedule of values established in
paragraph 2.6 of the General Conditions and in the case of Unit Price Work based on the number of
units completed, and in accordance with the General Requirements concerning Unit Price Work.
5.1.1. Progress payments will be made according to the percentages below, but, in each
case, less the aggregate of payments previously made and less such amounts as ENGINEER shall
determine, or OWNER may withhold, in accordance with paragraph 14.7 of the General Conditions.
At the time of each progress payment the OWNER will pay ninety percent (90%) of the value of the
Work completed. The remaining ten percent (10%) will be paid upon Final Acceptance of the
project or may be paid progressively, at the OWNER's discretion, if the character and progress of
the Work have been satisfactory to OWNER and ENGINEER. Ninety percent (90%) of materials
and equipment not incorporated in the Work (but delivered, suitably stored and accompanied by
documentation satisfactory to OWNER as provided in paragraph 14.2 of the General Conditions)
may be included in the application for payment.
5.2. FINAL PAYMENT. Upon Final Completion and Acceptance of the Work in accordance
with paragraph 14.13 of the General Conditions, OWNER shall pay the remainder of the Contract
Price as recommended by ENGINEER as provided in said paragraph 14.13.
Section 00520 Page 2
ARTICLE 6.
CONTRACTOR'S REPRESENTATION
In order to induce OWNER to enter into this Agreement, CONTRACTOR makes the
following representations:
6.1 CONTRACTOR has familiarized himself with the nature and extent of the Contract
Documents, Work, site, locality, and with all local conditions and Laws and Regulations that in any
manner may affect cost, progress, performance or furnishing of the Work.
6.2. CONTRACTOR has studied carefully all reports of explorations and tests of subsurface
conditions and drawings of physical conditions, which are identified in the Supplementary
Conditions as provided in paragraph 4.2 of the General Conditions.
6.3. CONTRACTOR has obtained and carefully studied (or assumes responsibility for
obtaining and carefully studying) all such examinations, investigations, explorations, tests, reports,
and studies (in addition to or to supplement those referred to in paragraph 6.2 above) which pertain
to the subsurface or physical condition at or contiguous to the site or otherwise may affect the cost,
progress, performance or furnishing of the Work as CONTRACTOR considers necessary for the
performance or furnishing of the Work at the Contract Price, within the Contract Times and in
accordance with the other terms and conditions of the Contract Documents, including specifically
the provisions of paragraph 4.2 of the General Conditions; and no additional examinations,
investigations, explorations, tests, reports, studies or similar information or data are or will be
required by CONTRACTOR for such purposes.
6.4. CONTRACTOR has reviewed and checked all information and data shown or indicated
on the Contract Documents with respect to existing Underground Facilities at or contiguous to the
site and assumes responsibility for the accurate location of said Underground Facilities. No
additional examinations, investigations, explorations, tests, reports, studies or similar information or
data in respect of said Underground Facilities are or will be required by CONTRACTOR in order to
perform and furnish the Work at the Contract Price, within the Contract Times and in accordance
with the other terms and conditions of the Contract Documents, including specifically the provision
of paragraph 4.3. of the General Conditions.
6.5.
CONTRACTOR has correlated the results of all such observations, examinations,
investigations, tests, reports and data with the terms and conditions of the Contract Documents.
6.6. CONTRACTOR has given ENGINEER written notice of all conflicts, errors or
discrepancies that he has discovered in the Contract Documents and the written resolution thereof
by ENGINEER is acceptable to CONTRACTOR.
ARTICLE 7.
CONTRACT DOCUMENTS
7.1. The Contract Documents which comprise the entire Agreement between OWNER and
CONTRACTOR concerning the Work consist of the General Conditions, Supplementary Conditions,
those items included in the definition of “Contract Documents” in Article 1.10 of the General
Conditions, and such other items as are referenced in this Article 7, all of which are incorporated
herein by this reference.
7.2. Forms for use by CONTRACTOR in performing the Work and related actions in
carrying out the terms of this Agreement are deemed Contract Documents and incorporated herein
by this reference, and include, but are not limited to, the following:
Section 00520 Page 3
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.2.6
Certificate of Substantial Completion
Certificate of Final Acceptance
Lien Waiver Releases
Consent of Surety
Application for Exemption Certificate
Application for Payment
7.3
Drawings, consisting of sheets numbered Sheet 1 through Sheet 18, with the
following general title:
Werner Elementary School Parking Lot and Play Area Site Improvement Project
The Contract Drawings shall be stamped "Final for Construction" and dated. Any revisions made
shall be clearly identified and dated.
7.4. Addenda Numbers
to
, inclusive.
7.5. The Contract Documents also include all written amendments and other documents
amending, modifying, or supplementing the Contract Documents pursuant to paragraphs 3.5 and
3.6 of the General Conditions.
7.6. There are no Contract Documents other than those listed or incorporated by reference
in this Article 7. The Contract Documents may only be amended, modified or supplemented as
provided in paragraphs 3.5 and 3.6 of the General Conditions.
ARTICLE 8.
MISCELLANEOUS
8.1. Terms used in this Agreement which are defined in Article I of the General Conditions
shall have the meanings indicated in the General Conditions.
8.2. No assignment by a party hereto of any rights under or interests in the Contract
Documents will be binding on another party hereto without the written consent of the party sought to
be bound; and specifically but not without limitations, moneys that may become due and moneys
that are due may not be assigned without such consent (except to the extent that the effect of this
restriction may be limited by law), and unless specifically stated to the contrary in any written
consent to an assignment no assignment will release or discharge that assignor from any duty or
responsibility under the Contract Document.
8.3. OWNER and CONTRACTOR each binds itself, its partners, successors, assigns and
legal representatives to the other party hereto, its partners, successors, assigns and legal
representatives in respect to all covenants, Agreement and obligations contained in the Contract
Document.
Section 00520 Page 4
OWNER: POUDRE SCHOOL DISTRICT R-1
CONTRACTOR:
By:
By:
BY:
By:
Title:
Date:
Date:
(CORPORATE SEAL)
Attest:
Attest:
Address for giving notices:
Address for giving notices:
2413 Laporte Avenue
Warehouse #3
Fort Collins, Colorado 80521
License No.
Approved as to Form
Section 00520 Page 5
SECTION 00530
NOTICE TO PROCEED
Description of Work: Werner Elementary School Parking Lot and Play Area Site Improvement
Project
To:
This notice is to advise you:
That the contract covering the above described Work has been fully executed by the
CONTRACTOR and the OWNER.
That the required CONTRACTOR's Performance Bond and Payment Bond have been received by
the OWNER.
That the OWNER has approved the said Contract Documents.
Therefore, as the CONTRACTOR for the above described Work, you are hereby authorized and
directed to proceed within
(
) calendar days from receipt of this notice
as required by the Agreement.
Dated this
day of
, 20
.
The dates for Substantial Completion and Final Acceptance shall be
, 20
, respectively.
, 20
and
Poudre School District R-1
OWNER
By:
Title:
ACKNOWLEDGMENT OF NOTICE
Receipt of the above Notice to Proceed is hereby acknowledged this
.
day of
, 20
CONTRACTOR
By:
Title:
Section 00530 Page 1
SECTION 00610
PERFORMANCE BOND
Bond No.
KNOW ALL MEN BY THESE PRESENTS: that
(Firm)
(Address)____________________________
(an Individual), (a Partnership), (a Corporation), hereinafter referred to as the "Principal" and
(Firm)_______________________________
(Address)____________________________
hereinafter referred to as "the Surety", are held and firmly bound unto Poudre School District
R-1, 2413 West Laporte Ave, Fort Collins, Colorado 80521 hereinafter referred to as the
"OWNER", in the penal sum of
in lawful money of the United States,
for the payment of which sum well and truly to be made, we bind ourselves, successors and
assigns, jointly and severally, firmly by these presents.
THE CONDITIONS OF THIS OBLIGATION are such that whereas the Principal entered into a
certain Agreement with the OWNER, dated the
day of
, 20
, a copy of
which is hereto attached and made a part hereof for the performance of Poudre School District
R-1 project, Werner Elementary School Parking Lot and Play Area Site Improvement Project.
NOW, THEREFORE, if the Principal shall well, truly and faithfully perform its duties, all the
undertakings, covenants, terms, conditions and agreements of said Agreement during the
original term thereof, and any extensions thereof which may be granted by the OWNER, with or
without Notice to the Surety and during the life of the guaranty period, and if the Principal shall
satisfy all claims and demands incurred under such Agreement, and shall fully indemnify and
save harmless the OWNER from all cost and damages which it may suffer by reason of failure
to do so, and shall reimburse and repay the OWNER all outlay and expense which the OWNER
may incur in making good any default then this obligation shall be void; otherwise to remain in
full force and effect.
PROVIDED, FURTHER, that the said Surety, for value received, hereby stipulates and agrees
that no change, extension of time, alteration or addition to the terms of the Agreement or to the
Work to be performed thereunder or the Specifications accompanying the same shall in any way
affect its obligation on this bond; and it does hereby waive notice of any such change, extension
of time, alteration or addition to the terms of the Agreement or to the Work or to the
Specifications.
PROVIDED, FURTHER, that no final settlement between the OWNER and the CONTRACTOR
shall abridge the right of any beneficiary hereunder, whose claim may be unsatisfied.
PROVIDED, FURTHER, that the Surety Company must be authorized to transact business in
the State of Colorado and be acceptable to the OWNER.
IN WITNESS WHEREOF, this instrument is executed in four (4) counterparts, each one of
which shall be deemed an original, this
day of
, 20 .
Section 00610 Page 1
IN PRESENCE OF:
Principal
By:
(Title)
(Address)
(Corporate Seal)
IN PRESENCE OF:
Other Partners
By:
By:
IN PRESENCE OF:
Surety
(Attorney-in-Fact)
(Address)
(Surety Seal)
NOTE:
Date of Bond must not be prior to date of Agreement. If CONTRACTOR
is Partnership, all partners should execute Bond.
Section 00610 Page 2
SECTION 00615
PAYMENT BOND
Bond No. ____
KNOW ALL MEN BY THESE PRESENTS: that
(Firm)
(Address)
(an Individual), (a Partnership), (a Corporation), hereinafter referred to as the "Principal" and
(Firm)
(Address
hereinafter referred to as "the Surety", are held and firmly bound unto the Poudre School District
R-1, 2413 West Laporte Ave., Fort Collins, Colorado 80521 hereinafter referred to as "the
OWNER", in the penal sum of
in lawful money of the United States, for
the payment of which sum well and truly to be made, we bind ourselves, successors and
assigns, jointly and severally, firmly by these presents.
THE CONDITIONS OF THIS OBLIGATION are such that whereas the Principal entered into a
certain Agreement with the OWNER, dated the
day of
, 20
, a copy of
which is hereto attached and made a part hereof for the performance of the Poudre School
District R-1 project, Werner Elementary School Parking Lot and Play Area Site Improvement
Project.
NOW, THEREFORE, if the Principal shall make payment to all persons, firms, subcontractors,
and corporations furnishing materials for or performing labor in the prosecution of the Work
provided for in such Agreement and any authorized extension or modification thereof, including
all amounts due for materials, lubricants, repairs on machinery, equipment and tools,
consumed, rented or used in connection with the construction of such Work, and all insurance
premiums on said Work, and for all labor, performed in such Work whether by subcontractor or
otherwise, then this obligation shall be void; otherwise to remain in full force and effect.
PROVIDED, FURTHER, that the said Surety, for value received, hereby stipulates and agrees
that no change, extension of time, alteration or addition to the terms of the Agreement or to the
Work to be performed thereunder or the Specifications accompanying the same shall in any way
affect its obligation on this bond; and it does hereby waive notice of any such change, extension
of time, alteration or addition to the terms of the Agreement or to the Work or to the
Specifications.
PROVIDED, FURTHER, that no final settlement between the OWNER and the CONTRACTOR
shall abridge the right of any beneficiary hereunder, whose claim may be unsatisfied.
PROVIDED, FURTHER, that the Surety Company must be authorized to transact business in
the State of Colorado and be acceptable to the OWNER.
Section 00615 Page 1
IN WITNESS WHEREOF, this instrument is executed in four (4) counterparts, each one of
day of
, 20
.
which shall be deemed an original, this
IN PRESENCE OF:
Principal
By:
(Title)
(Address)
(Corporate Seal)
IN PRESENCE OF:
Other Partners
By:
By:
IN PRESENCE OF:
Surety
(Attorney-in-Fact)
(Address)
(Surety Seal)
NOTE:
Date of Bond must not be prior to date of Agreement.
If CONTRACTOR is Partnership, all partners should execute Bond.
Section 00615 Page 2
SECTION 00630
CERTIFICATE OF INSURANCE
CONTRACTOR shall insert his own standard form for Certificate of Insurance.
Section 00630 Page 1
SECTION 00635
CERTIFICATE OF SUBSTANTIAL COMPLETION
TO: POUDRE SCHOOL DISTRICT R-1
(OWNER)
DATE OF SUBSTANTIAL COMPLETION:
PROJECT OR SPECIFIED PART SHALL
INCLUDE:
PROJECT TITLE:
Werner Elementary School Parking Lot and
Play Area Site Improvement Project
LOCATION: Fort Collins, Colorado
OWNER:
Poudre School District R-1
CONTRACTOR:
CONTRACT DATE:
The Work performed under this contract has been inspected by authorized
representatives of the OWNER, CONTRACTOR, and the ENGINEER and the project (or
specified part of the project, as indicated above) is hereby declared to be substantially
completed on the above date.
A tentative list of items to be completed or corrected is appended hereto. This list may not
be exhaustive, and the failure to include an item on it does not alter the responsibility of
the CONTRACTOR to complete all the Work in accordance with the Contract Documents.
ENGINEER
By:
AUTHORIZED REPRESENTATIVE
DATE
The CONTRACTOR accepts the above Certificate of Substantial Completion and agrees
to complete and correct the items on the tentative list within the time indicated.
CONTRACTOR
By:
AUTHORIZED REPRESENTATIVE
DATE
The OWNER accepts the project or specified area of the project as substantially complete
and will assume full possession of the project or specified area of the project at
12:01 a.m., on
. The responsibility for heat, utilities, security, and insurance
under the Contract Documents shall be as set forth under "Remarks" below.
POUDRE SCHOOL DISTRICT R-1
OWNER
By:
AUTHORIZED REPRESENTATIVE
DATE
REMARKS:
Section 00635 Page 1
SECTION 00640
CERTIFICATE OF FINAL ACCEPTANCE
, 20___
TO:
Gentlemen:
You are hereby notified that on the
day of
, 20
, the Poudre School District
R-1, Fort Collins, Colorado, has accepted the Work completed by
for the
Poudre School District R-1 project, Werner Elementary School Parking Lot and Play Area Site
Improvement Project.
A check is attached hereto in the amount of $
as Final Payment for all Work done,
subject to the terms of the Contract Documents which are dated
.
In conformance with the Contract Documents for this project, your obligations and guarantees
will continue for the specified time from the following date:
.
Sincerely,
OWNER: Poudre School District R-1
By:
Title:
ATTEST:
Title:
Section 00640 Page 1
SECTION 00650
LIEN WAIVER RELEASE
(CONTRACTOR)
TO:
Poudre School District R-1, Colorado (OWNER)
FROM:
PROJECT:
(CONTRACTOR)
Werner Elementary School Parking Lot and Play Area Site Improvement
Project.
1.
The CONTRACTOR acknowledges having received payment, except
retainage from the OWNER for all work, labor, skill and material furnished,
delivered and performed by the CONTRACTOR for the OWNER or for
anyone in the construction, design, improvement, alteration, addition or
repair of the above described project.
2.
In consideration of such payment and other good and valuable
consideration, the receipt and adequacy of which are hereby
acknowledged, the CONTRACTOR voluntarily waives all rights, claims and
liens, including but not limited to, mechanic's liens, Miller Act claims (40
U.S.C.A. 270 a and b), stop notices, equitable liens and labor and material
bond rights which the CONTRACTOR may now or may afterward have,
claim or assert for all and any work, labor, skill or materials furnished,
delivered or performed for the construction, design, improvement,
alteration, addition or repair of the above described project, against the
OWNER or its officers, agents, employees or assigns, against any fund of
or in the possession or control of the OWNER, against the project or
against all land and the buildings on and appurtenances to the land
improved by the project.
3.
The CONTRACTOR affirms that all work, labor and materials, furnished,
delivered or performed to or for the construction, design, improvement,
alteration, addition or repair of the project were furnished, delivered or
performed by the CONTRACTOR or its agents, employees, and servants,
or by and through the CONTRACTOR by various Subcontractors or
materialmen or their agents, employees and servants and further affirms
the same have been paid in full and have released in full any and all
existing or possible future mechanic's liens or rights or claims against the
project or any funds in the OWNER'S possession or control concerning the
project or against the OWNER or its officers, agents, employees or assigns
arising out of the project.
4.
The CONTRACTOR agrees to defend and hold harmless the OWNER, the
lender, if any, and the Surety on the project against and from any claim
hereinafter made by the CONTRACTOR'S Subcontractors, materialmen,
Section 00650 Page 1
employees, servants, agents or assigns against the project or against the
OWNER or its officers, employees, agents or assigns arising out of the
project for all loss, damage and costs, including reasonable attorneys fees,
incurred as a result of such claims.
5.
The parties acknowledge that the description of the project set forth above
constitutes and adequate description of the property and improvements to
which this Lien Waiver Release pertains. It is further acknowledged that
this Lien Waiver Release is for the benefit of and may be relied upon by the
OWNER, the lender, if any, and Surety on any labor and material bonds for
the project.
Signed this
day of
, 20
.
CONTRACTOR
By:
Title:
ATTEST:
Secretary
STATE OF COLORADO
COUNTY OF LARIMER
20
)
)ss.
)
Subscribed and sworn to before me this
, by
day of
Witness my hand and official seal.
My Commission Expires:
.
Notary Public
Section 00650 Page 2
SECTION 00651
LIEN WAIVER RELEASE
(Subcontractor)
TO:
(CONTRACTOR)
FROM:
(Subcontractor)
PROJECT:
Werner Elementary School Parking Lot and Play Area Site Improvement Project.
1.
The Subcontractor acknowledges having received payment, except retainage, from the
CONTRACTOR for all work, labor, skill and material furnished, delivered and performed by
the Subcontractor for the CONTRACTOR or for anyone in the construction, design,
improvement, alteration, addition or repair of the above described project.
2.
In consideration of such payment and other good and valuable consideration, the receipt
and adequacy of which are hereby acknowledged, the Subcontractor voluntarily waives all
rights, claims and liens, including but not limited to, mechanic's liens, Miller Act claims (40
U.S.C.A. 270 a and b), stop notices, equitable liens and labor and material bond rights
which the Subcontractor may now or may afterward have, claim or assert for all and any
work, labor, skill or materials furnished, delivered or performed for the construction, design,
improvement, alteration, addition or repair of the above described project, against the
CONTRACTOR or its officers, agents, employees or assigns, against the project or against
all land and the buildings on and appurtenances to the land improved by the project.
3.
The Subcontractor affirms that all work, labor and materials, furnished, delivered or
performed to or for the construction, design, improvement, alteration, addition or repair of
the project were furnished, delivered or performed by the Subcontractor or its' agents,
employees, and servants, or by and through the Subcontractor by various subsubcontractors or materialmen or their agents, employees and servants and further affirms
the same have been paid in full and have released in full any and all existing or possible
future mechanic's liens or rights or claims against the project or against the CONTRACTOR
or its officers, agents, employees or assigns arising out of the project.
4.
The Subcontractor agrees to defend and hold harmless the CONTRACTOR, the lender, if
any, and the Surety on the project against and from any claim hereinafter made by the
Subcontractor's sub-subcontractors, materialmen, employees, servants agents or assigns
against the project or against the CONTRACTOR or OWNER, lender or Surety or their
officers, employees, agents or assigns arising out of the project for all loss, damage and
costs, including reasonable attorneys fees, incurred as a result of such claims.
5.
The parties acknowledge that the description of the project set forth above constitutes and
adequate description of the property and improvements to which this Lien Waiver Release
pertains. It is further acknowledged that this Lien Waiver Release is for the benefit of and
may be relied upon by the CONTRACTOR, OWNER, the lender, if any, and Surety on any
labor and material bonds for the project.
Signed this
day of
, 20
.
Section 00651 Page 1
Subcontractor
By:
ATTEST:
Secretary
STATE OF COLORADO
COUNTY OF LARIMER
)
)ss.
)
Subscribed and sworn to before me this
.
day of
20
, by
Witness my hand and official seal.
My Commission Expires:
Notary Public
Section 00651 Page 2
SECTION 00660
CONSENT OF SURETY
TO: Poudre School District R-1, Colorado
(hereinafter referred to as the "OWNER")
CONTRACTOR:
PROJECT: Werner Elementary School Parking Lot and Play Area Site Improvement Project.
CONTRACT DATE:
In accordance with the provisions of the Contract between the OWNER and the CONTRACTOR
as indicated above, for
bond of (Surety)
hereby approves of the Final Payment to the CONTRACTOR, and agrees that Final Payment to
the CONTRACTOR shall not relieve the Surety Company of any of its obligations to the
OWNER, as set forth in the said Surety Company's Bond.
IN WITNESS WHEREOF, the Surety Company has hereunto set its hand this _____day of
, 20
.
(Surety Company)
By:
ATTACH:
Power of Attorney and Certificate of Authority of Attorney(s)-in-Fact.
Section 00660 Page 1
SECTION 00670
APPLICATION FOR EXEMPTION CERTIFICATE
(Insert State certificate here.)
Section 00670 Page 1
SECTION 00700
GENERAL CONDITIONS
SECTION 00800
SUPPLEMENTARY CONDITIONS
SECTION 00800
SUPPLEMENTARY CONDITIONS
Conditions of the Contract
These Supplementary Conditions amend or supplement the General Conditions of the
Construction Contract (EJCDC General Conditions 1910-8, 1990 edition with City of
Fort Collins modifications) and other provisions of the Contract Documents as indicated
below.
SC-4.2
A.
Subsurface and Physical Conditions:
Add the following language to paragraph 4.2.1 of the General Conditions.
4.2.1.1.1
The following report(s) of exploration and tests of subsurface
conditions at the site of the Work:
“Subsurface Exploration Report – Proposed Pavement Reconstruction
Werner Elementary School”, 5400 Mail Creek Lane, Fort Collins, Colorado
Earth Engineering Consultants, Inc.
EEC Project No. 1122109, December 17, 2012
Contractor may rely upon the accuracy of the technical data contained in
the geotechnical documents, but not upon non-technical data,
interpretations or opinions contained therein or upon the completeness of
any information in the report.
B.
4.2.1.2.1
No drawing of physical conditions in or relating to existing
surface or subsurface structures (except Underground Facilities referred
to in Paragraph 4.3) which are at or contiguous to the site have been
utilized by the Engineer in preparation of the Contract Documents, except
the following:
None
SC-5.4.7
A.
Additional Insureds
Anderson Consulting Engineers, Inc. shall be included as additional
insureds on the Certificate of Insurance.
Section 00800 Page 1
SC-5.4.8
A.
Limits of Liability
Add the following language at the end of paragraph 5.4.8.
The limits of liability for the insurance required by the paragraph numbers of the
General Conditions listed below are as follows:
5.4.1 and 5.4.2
Coverage A - Statutory Limits
Coverage B - $100,000/$100,000/$500,000
5.4.3 and 5.4.5
Commercial General Liability policy will have limits of
$1,000,000 combined single limits (CSL). This policy will include coverage for
Explosion, Collapse, and Underground coverage unless waived by the Owner.
5.4.6 The Comprehensive Automobile Liability Insurance policy will have limits
of $1,000,000 combined single limits (CSL).
5.4.9 This policy will include completed operations coverage/product liability
coverage with limits of $1,000,000 combined single limits (CSL).
Section 00800 Page 2
SECTION 00900
ADDENDA, MODIFICATIONS, AND PAYMENT
00950
Contract Change Order
00960
Application for Payment
CHANGE ORDER NO.
PROJECT TITLE:
Werner Elementary School Parking Lot and Play Area Site Improvement
Project
CONTRACTOR:
PROJECT NUMBER:
DESCRIPTION:
1.
Reason for change:
2.
Description of Change:
3.
Change in Contract Cost:
4.
Change in Contract Time:
ORIGINAL CONTRACT COST
TOTAL APPROVED CHANGE ORDER
TOTAL PENDING CHANGE ORDER
TOTAL THIS CHANGE ORDER
TOTAL % OF THIS CHANGE ORDER
TOTAL C.O.% OF ORIGNINAL CONTRACT
ADJUSTED CONTRACT COST
$ 0.00
0.00
0.00
0.00
$ 0.00
(Assuming all change orders approved)
ACCEPTED BY:
DATE:
Contractor's Representative
ACCEPTED BY:
DATE:
Project Manager
REVIEWED BY:
DATE:
Title:
APPROVED BY:
DATE:
Title:
APPROVED BY:
DATE:
Purchasing Agent over $15,000
cc:
Contractor
Architect
Project File
Purchasing
Engineer
Section 00950 Page 1
Section 00960
Application for Payment
Section 00960 Page 1
DIVISION 1 - GENERAL REQUIREMENTS
SECTION 01110
SUMMARY OF WORK
SECTION 01140
CONTRACTOR’S USE OF PREMISES
SECTION 01180
UTILITY SOURCES
SECTION 01270
MEASUREMENT AND PAYMENT
SECTION 01310
PROJECT MEETINGS
SECTION 01320
CONSTRUCTION SCHEDULES
SECTION 01330
SUBMITTALS
SECTION 01425
STANDARD REFERENCES
SECTION 01450
MATERIALS TESTING
SECTION 01555
TRAFFIC REGULATION
SECTION 01635
SUBSTITUTIONS AND PRODUCT
OPTIONS
SECTION 01650
MATERIAL DELIVERY, STORAGE,
AND HANDLING
SECTION 01710
SITE CONDITIONS
SECTION 01720
FIELD ENGINEERING AND SURVEYING
SECTION 01745
ENVIRONMENTAL CONTROLS
SECTION 01780
CONTRACT CLOSE-OUT
SECTION 01110
SUMMARY OF WORK
PART 1
1.01
GENERAL
SECTION INCLUDES
Furnish all labor and install all materials for the Werner Elementary School Parking Lot and
Play Area Site Improvement Project, including but not limited to the following items:
The project includes the removal of existing asphalt pavement, concrete sidewalk, curb and
gutter, drain pans, and landscape materials. The project also includes the construction of new
asphalt pavement, concrete driveway, concrete entrance ramp, sidewalk, curb and gutter, curb
access ramp, drain pans, and bus canopy pavement; as well as the installation of bus canopy
wheel stops and application of pavement markings.
1.02
WORK SEQUENCE
The Work Sequence is to be submitted as part of the construction schedule required in
Section 01320. Construction of the project may begin immediately on the date of Notice to
Proceed.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01110-1
Summary of Work
THIS PAGE INTENTIONALLY LEFT BLANK.
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01110-2
Summary of Work
SECTION 01140
CONTRACTOR’S USE OF PREMISES
PART 1
1.01
SECTION INCLUDES
A.
1.02
The CONTRACTOR may use the OWNER’s property designated by the OWNER’s
Representative for equipment and materials as long as he confines his operations to
those permitted by local laws, ordinance and permits and meets the following
requirements:
1.
Do not unreasonably encumber site with materials or equipment.
2.
Assume full responsibility for protection and safekeeping of products stored
on premises.
3.
Move any stored products which interfere with operations of the OWNER.
4.
Obtain and pay for use of additional storage or work areas needed for
operations.
5.
Provide access for emergency vehicles to the site at all times.
LIMITS OF CONSTRUCTION
A.
1.03
GENERAL
The CONTRACTOR must maintain all of his construction activities within the
OWNER’s property and/or construction easements and limits of the project, or other
stated areas, unless permits and/or written permission are obtained by the
CONTRACTOR, from appropriate authorities or private property owners, outside of
these areas.
SECURITY
A.
The CONTRACTOR shall at all times be responsible for the security of his facilities
and equipment. The OWNER will not take responsibility for missing or damaged
equipment, tools, or personal belongings of the CONTRACTOR.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01140-1
Contractor’s Use of Premises
THIS PAGE INTENTIONALLY LEFT BLANK.
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01140-2
Contractor’s Use of Premises
SECTION 01180
UTILITY SOURCES
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Names and telephone numbers of affected agencies and utilities in the area are listed
below for the CONTRACTOR’s convenience. The CONTRACTOR assumes all
responsibility of contacting these agencies and verification of telephone numbers.
1.
Water
a. City of Fort Collins
b. Fort Collins – Loveland Water District
(970) 221-6700
(970) 226-3104
2.
Sanitary Sewer - City of Fort Collins
(970) 221-6700
3.
Stormwater - City of Fort Collins
(970) 221-6700
4.
Park Planning – City of Fort Collins
(970) 221-6366
5.
Electrical
a. City of Fort Collins
b. Platte River Power Authority (PRPA)
c. Western Area Power Administration (WAPA)
d. Poudre Valley Rural Electric Association (PVREA)
e. Public Service Company (PSC) / Xcel Energy
(970) 224-6157
(970) 226-4000
(970) 461-7298
(970) 226-1234
(800) 895-1999
Engineering – City of Fort Collins
(970) 221-6605
Engineering – Larimer County
(970) 498-5700
7.
Traffic – City of Fort Collins
(970) 224-6062
8.
Gas - Public Service Company / Xcel Energy
(800) 895-2999
9.
Telephone - Qwest Communications
(970) 222-2414
10.
Cable TV - Comcast
(888) 824-4010
11.
Poudre School District R-1
(970) 490-3600
12.
One-Call Utility Locates
811
6.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01180-1
Utility Sources
THIS PAGE INTENTIONALLY LEFT BLANK.
Werner Elem.
01180-2
Utility Sources
SECTION 01270
MEASUREMENT AND PAYMENT
PART 1
1.01
SECTION INCLUDES
A.
1.02
GENERAL
The work performed under this Agreement shall be paid for as described in Section
500, Article 5 based on the Bid Proposal and the Total Bid Price. All costs incurred
shall comply with the provisions of these Specifications and shall be included in the
Total Bid Price for the project. Except as may be otherwise stipulated, no material,
labor or equipment will be furnished by the OWNER. The following provides a
general listing of items of Work along with a brief summary of the work and
materials included. Refer to the Specifications and Drawings for additional
information and all requirements for each item of Work.
ITEMS OF WORK
1.
Mobilization
No unit measurement for payment will be made for any of the work, materials and
equipment required for mobilization. This work consists of the mobilization of
personnel, equipment and supplies at the project site in preparation for work on the
project. This item shall include the establishment of the CONTRACTOR’S offices,
buildings and other necessary facilities, and all other costs incurred or labor and
operations which must be performed prior to beginning the other items under the
Contract. This item shall also include temporary fencing around project work areas,
and any other fencing/security items as deemed necessary by the CONTRACTOR.
Removal of the CONTRACTOR’s equipment, supplies, excess materials, and
cleanup of the site are also included in this item.
2.
Traffic Control
No unit measurement for payment shall be made for any of the materials, work, and
equipment required. The payment shall be total compensation for all labor,
equipment, materials, maintenance, and all incidentals necessary to prepare,
implement, and maintain the approved Traffic Control Plan in accordance with the
Drawings and accepted Traffic Control Plan.
3.
Surveying
No unit measurement shall be made for this item. Work includes providing all
equipment, labor, and materials required to provide Surveying for construction of all
work items for the project including: Staking of horizontal and vertical alignments;
overlot grading; subgrade elevations; off-sets; temporary control points;
re-establishment of land monuments; and, all appurtenance features of the work.
4.
Remove Turf Sod
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include all of the CONTRACTOR’s cost of whatsoever nature to complete the
turf sod removal: furnishing and transporting all materials, labor, and equipment;
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01270-1
Measurement and Payment
excavation, removal disposal of sod; backfilling, grading and compacting; removal
and/or moving of sprinkler equipment; and, all other related and necessary materials,
work, and equipment required to perform the work in accordance with the Drawings
and Specifications.
5.
6.
Remove Concrete
Remove Asphalt Speed Humps
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include full compensation for sawing, removing, hauling and disposal of such
items including existing cable/conduit, pipe, concrete, asphalt, and excavation and
subsequent backfill with suitable material associated with the removal of these items,
and all other work necessary to remove these items in accordance with the Drawings
and Specifications. Replacement of asphalt; curb, gutter and sidewalk; storm sewer
and pipe outside of the pay lines due to the CONTRACTOR’s failure to protect
existing, undisturbed materials shall not be paid for and shall be replaced at the
CONTRACTOR’s expense.
7.
Remove Asphalt Pavement
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include full compensation for sawing, removing, hauling and disposal of such
items including existing cable/conduit, pipe, concrete, asphalt, and excavation and
subsequent backfill with suitable material associated with the removal of these items,
and all other work necessary to remove these items in accordance with the Drawings
and Specifications. Replacement of asphalt; curb, gutter and sidewalk; storm sewer
and pipe outside of the pay lines due to the CONTRACTOR’s failure to protect
existing, undisturbed materials shall not be paid for and shall be replaced at the
CONTRACTOR’s expense.
8.
Concrete Speed Humps
No unit measurement for payment shall be made for this item. No payment will be
made for items placed outside of the dimensions as shown on the Drawings unless
directed by the ENGINEER OWNER. The Total Bid Price shall include all of the
CONTRACTOR’s costs of whatsoever nature associated with Concrete Speed
Humps. The price bid shall include: furnishing and placing the concrete; forming;
furnishing and applying curing compounds; finishing the edging the concrete
surfaces; joints and joint materials; furnishing and compacting all materials required
for preparation of a stable subbase; backfilling; curb painting; and all other related
and necessary materials, work, and equipment required to construct the concrete curb
and gutter in accordance with the Drawings and Specifications. No payment shall be
made for replacement of materials damaged by the CONTRACTOR in his
operations.
9.
Vertical Curb and Gutter
No unit measurement for payment shall be made for this item. No payment will be
made for items placed outside of the dimensions as shown on the Drawings unless
directed by the ENGINEER OWNER. The Total Bid Price shall include all of the
CONTRACTOR’s costs of whatsoever nature associated with Vertical Curb and
Gutter. The price bid shall include: furnishing and placing the concrete; forming;
Werner Elem.
01270-2
Measurement and Payment
furnishing and applying curing compounds; finishing the edging the concrete
surfaces; joints and joint materials; furnishing and compacting all materials required
for preparation of a stable subbase; backfilling; curb painting; and all other related
and necessary materials, work, and equipment required to construct the concrete curb
and gutter in accordance with the Drawings and Specifications. No payment shall be
made for replacement of materials damaged by the CONTRACTOR in his
operations.
10.
11.
12.
Concrete Drain Pans (4-ft wide), Apron and Transition
Concrete Drain Pan (3.5-ft wide)
Concrete Drain Pan (6-ft wide), Apron and Ramp Transition
No unit measurement for payment shall be made for this item. No payment will be
made for items placed outside of the dimensions as shown on the Drawings unless
directed by the ENGINEER OWNER. The Total Bid Price shall include all of the
CONTRACTOR’s costs of whatsoever nature associated with Concrete Drain Pan,
Apron and Ramp Transition. The price bid shall include: furnishing and placing the
concrete; forming; furnishing coloring; furnishing expansion joints; furnishing and
applying the curing compounds; sawcutting existing concrete as required; sawcutting
control joints; finishing and edging the concrete surface; furnishing and compacting
all materials required for preparation of a stable subbase; backfilling; and, all other
related and necessary materials, work, and equipment required to construct the
concrete pan in accordance with the Drawings and Specifications.
13.
Concrete Sidewalk
No unit measurement for payment shall be made for this item. Payment will be made
as work progresses. No payment will be made for items placed outside of the
dimensions as shown on the Drawings unless directed by the ENGINEER OWNER.
The Total Bid Price shall include all of the CONTRACTOR’s costs of whatsoever
nature associated with Concrete Sidewalk. The price bid shall include: furnishing and
placing the concrete; forming; furnishing and applying curing compounds; finishing
the edging the concrete surfaces; joints and joint materials; furnishing and
compacting all materials required for preparation of a stable subbase; backfilling;
and, all other related and necessary materials, work, and equipment required to
construct the concrete flatwork in accordance with the Drawings and Specifications.
No measurement for payment shall be made for replacement of materials damaged by
the CONTRACTOR in his operations.
14.
Aggregate Base Course
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include full compensation for furnishing all labor, materials, equipment, and
incidentals and for doing all work involved in Aggregate Base Course, complete-inplace, including supplying, placing and compacting aggregate base course at proper
moisture in accordance with the Drawings and Specifications or as otherwise directed
by the ENGINEER.
15.
Hot Bituminous Pavement-Grades S and SX (including striping)
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include full compensation for furnishing all labor, materials, equipment, and
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01270-3
Measurement and Payment
any other incidentals to Hot Bituminous Pavement-Grade S and SX in accordance
with the Contract Documents, complete-in-place; haul from the suppliers source;
placement of pavement to design dimensions; subgrade preparation, excavation and
embankment, including that required for Aggregate Base Course and Fly Ash
installation; placement; compaction; striping; striping on concrete pavement; and,
any other miscellaneous items and work shown or reasonably implied on the
Drawings and in the Specifications for this work, and elsewhere in the Contract
Documents.
16.
Fly Ash Stabilization
No unit measurement for payment shall be made for this item. The Lump Sum Bid
Price for Fly Ash Stabilization shall include full compensation for furnishing all
labor, materials, equipment, and incidentals and for placement, amendment,
compaction, and all incidental work involved in Fly Ash Stabilization complete-inplace, including supplying and placing this item in accordance with the Drawings and
Specifications or as otherwise directed by the ENGINEER OWNER.
17.
18.
Rock Socks
Straw Wattles
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include all of the contractor’s costs of whatsoever nature required for supplying,
installing, maintaining, removing the erosion control BMPs (filters, rock socks,
wattles, etc.), and all other related and necessary materials, work, and equipment
required to install erosion control BMPs in accordance with the Drawings and
Specifications.
19.
Playground Equipment - Remove and Replace Basketball and Tetherball Poles
and Benches
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include all of the CONTRACTOR’S costs of whatsoever nature. The bid price
shall include; removal, storage, excavation; backfill; concrete pole and bench leg
base; steel reinforcing; testing, asphalt patching and all other related and necessary
materials, work, and equipment required to remove and reinstall playground poles
and metal benches in accordance with the Drawings and Specifications. No
measurement for payment shall be made for the replacement of materials damaged by
the CONTRACTOR outside of this operation.
Existing basketball and tetherball posts shall be reinstalled to the same height to
rim and top, respectively, as they had at removal.
20.
Signage – Handicap Parking Signs
No unit measurement for payment shall be made for this item. The Total Bid Price
shall include all of the CONTRACTOR’s cost of whatsoever nature to complete the
sign installation including: furnishing and transporting all materials, labor, and
equipment; furnishing and installing new signs; backfilling and compaction topsoil
replacement; and, all other related and necessary materials, work, and equipment
required to perform the work in accordance with the Drawings and Specifications.
END OF SECTION
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01270-4
Measurement and Payment
SECTION 01310
PROJECT MEETINGS
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Pre-Construction Conference: A Pre-Construction Conference will be held after
Notice of Award and before the Notice to Proceed; the date, time and location will be
determined after Notice of Award.
The conference shall be attended by:
1.
2.
3.
4.
CONTRACTOR and CONTRACTOR’s Superintendent
CONTRACTOR’s Surveyor and Subcontractors
OWNER
Others as requested by the CONTRACTOR or OWNER.
Unless previously submitted to the OWNER, the CONTRACTOR shall bring to the
conference a tentative schedule of the construction project, include in the schedule
shop drawings and other submittals.
The purpose of the conference is to designate responsible personnel and establish a
working relationship. Matters requiring coordination will be discussed and
procedures for handling such matters established. The agenda will include:
1.
2.
3.
4.
5.
6.
7.
8.
9.
B.
CONTRACTOR’s tentative Schedule
Permit applications and submittals, including Erosion and Sediment Control
Plan, and Traffic Control Plan
Transmittal, review and distribution of CONTRACTOR’s submittals
Processing applications for payment
Maintaining record documents
Critical work sequencing
Field decision and change orders
Use of premises, office and storage areas, staging area, security,
housekeeping, and OWNER’s needs
CONTRACTOR’s assignment of safety and first aid
Construction Progress Meetings: Progress meetings will be conducted weekly or at
the discretion of the OWNER. These meetings shall be attended by the OWNER, the
CONTRACTOR’s representative and any others invited by these people.
The meeting will be conducted by the OWNER and the OWNER will arrange for
keeping the minutes and distributing the minutes to all persons in attendance.
The agenda of these project meetings will include construction progress, the status of
submittal reviews, the status of information requests, critical work sequencing,
review of strategies for connections into existing facilities, status of field orders and
change orders, and any general business.
Werner Elem.
01310-1
Project Meetings
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01310-2
Project Meetings
SECTION 01320
CONSTRUCTION SCHEDULES
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Prepare detailed schedule of all construction operations and procurements to be reviewed
by parties attending the preconstruction conference.
Schedule shall be approved by the OWNER prior to Notice to Proceed.
1.02
FORMAT AND SUBMISSIONS
A.
Prepare construction and procurement schedules in a graphic format suitable for
displaying scheduled and actual progress.
B.
Submit four (4) copies of each schedule to the OWNER for review.
The OWNER will return one copy to the CONTRACTOR with revisions suggested or
necessary for coordination of the Work with the needs of the OWNER or others.
1.03
CONTENT
A.
Construction Progress Schedule
1.
Show the complete work sequence of construction by activity and location.
2.
Show the dates for the beginning and completion of major task items. At a
minimum, show the following items for each phase of the project:
•
•
•
•
•
•
•
3.
B.
Werner Elem.
Removal of existing asphalt pavement and landscape materials;
Removal of existing concrete work (sidewalks, curb and gutter, and drain
pans);
Preparation of subgrade and grading;
Installation of new concrete work (driveway, entrance ramp, sidewalk,
curb and gutter, curb access ramp, drain pans, and bus canopy
pavement);
Installation of new asphalt pavement;
Installation of bus canopy wheel stops; and,
Pavement markings.
Show projected percentage of completion for each item as of the first day of the
month.
Report of delivery of equipment and materials.
1.
Show delivery status of critical and major items of equipment and materials.
2.
Include a schedule which includes the critical path for Shop Drawings, tests, and
other submittal requirements for equipment and materials.
01320-1
Construction Schedules
1.04
PROGRESS REVISIONS
A.
Submit revised schedules and reports when changes are foreseen, when requested by
OWNER, and with each application for progress payment.
B.
Show changes occurring since previous submission.
1.
2.
C.
1.05
Actual progress of each item to date.
Revised projections of progress and completion.
Provide a narrative report as needed to define:
1.
Anticipated problems, recommended actions, and their effects on the schedule.
2.
The effect of changes on schedules of others.
OWNER'S RESPONSIBILITY
A.
OWNER's review is only for the purpose of checking conformity with the Contract
Documents and assisting CONTRACTOR in coordinating the Work with the needs of
the Project.
B.
It is not to be construed as relieving CONTRACTOR from any responsibility to
determine the means, methods, techniques, sequences and procedures of construction as
provided in the General Conditions.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01320-2
Construction Schedules
SECTION 01330
SUBMITTALS
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
B.
Werner Elem.
Requirements
1.
Where required by the Specifications, the CONTRACTOR shall submit
descriptive information that will enable the ENGINEER OWNER to
determine whether the CONTRACTOR’s proposed materials, equipment and
methods of work are in general conformance to the design concept and in
accordance with the Drawings and Specifications.
The information
submitted may consist of drawings, specifications, descriptive data,
certificates, samples, test results, product data, and such other information,
all as specifically required in the Specifications. In some instances, specified
submittal information describes some, but not all features of the material,
equipment, or method of work.
2.
The CONTRACTOR shall be responsible for the accuracy and completeness
of the information contained in each submittal and shall assure that the
material, equipment, or method of work shall be as described in the
submittal. The CONTRACTOR shall verify that all features of all products
conform to the requirements of the Drawings and Specifications. The
CONTRACTOR shall ensure that there is no conflict with other submittals
and notify the ENGINEER OWNER in each case where its submittal may
affect the work of another CONTRACTOR or the OWNER. The
CONTRACTOR shall ensure coordination of submittals among the related
crafts and subcontractors.
3.
Submittals will be reviewed for overall design intent and returned to
CONTRACTOR with action to be indicated by the ENGINEER OWNER. It
shall be the CONTRACTOR’s responsibility to assure that previously
accepted documents are destroyed when they are superseded by a resubmittal
as such.
4.
It shall be the CONTRACTOR’s responsibility to ensure that required items
are corrected and resubmitted. Any work done before approval shall be at
the CONTRACTOR’s own risk.
Submittal Procedure
1.
Unless a different number is called for in the individual sections, six (6)
copies of each submittal and sample are required, four (4) of which will be
retained by the ENGINEER OWNER. The CONTRACTOR shall receive
two (2) copies in return. Faxed submittals will not be accepted.
2.
Submittals that are related to or affect each other shall be forwarded
simultaneously as a package to facilitate coordinated review. Uncoordinated
submittals will be rejected.
01330-1
Submittals
C.
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3.
If the items or system proposed are acceptable but the major part of the
individual drawings or documents are incomplete or require revision, the
submittal will be returned with requirements for completion.
4.
The right is reserved for the ENGINEER OWNER to require submittals in
addition to those called for in individual sections.
5.
Submittals regarding material and equipment shall be submitted directly to
the ENGINEER OWNER and will be accompanied by a transmittal form. A
separate form shall be used for each specific item, class of material,
equipment, and items specified in separate discrete sections for which the
submittal is required. Submittals for various items shall be made with a
single form when the items taken together constitute a manufacturer’s
package or are so functionally related that expediency indicates checking or
review of the group or package as a whole.
6.
A unique number, sequentially assigned, shall be noted on the transmittal
form accompanying each item submitted. Original submittal numbers shall
have the following format: “XXX-Y;” where “XXX” is the originally
assigned submittal number and “Y” is a sequential letter assigned for
resubmittals (i.e., A, B, or C being the first, second and third resubmittals,
respectively). Submittal 25B, for example, is the second resubmittal of
Submittal 25.
7.
If the CONTRACTOR proposes to provide material, equipment, or method
of work that deviates from the Contract Documents, it shall indicate so under
“deviations” on the transmittal form accompanying the submittal copies.
8.
Submittals that do not have all the information required to be submitted,
including deviations, are not acceptable and will be returned without review.
Review Procedure:
1.
Submittals are specified for those features and characteristics of materials,
equipment, and methods of operation that can be selected based on the
CONTRACTOR’s judgment of their conformance to the requirements of the
Drawing and Specifications. Other features and characteristics are specified
in a matter that enables the CONTRACTOR to determine acceptable options
without submittals. The review procedure is based on the CONTRACTOR’s
guarantee that all features and characteristics not requiring submittals
conform to the Drawings and Specifications. Review shall not extend to
means, methods, techniques, sequences, or procedures of construction or to
verifying quantities, dimensions, weights or gages, or fabrication processes
(except where specifically indicated or required by the Specifications) of
separate items, and as such, will not indicate approval of the assembly in
which the item functions.
2.
Unless otherwise specified, within twenty-one (21) calendar days after
receipt of the submittal, the ENGINEER OWNER will review the submittal
and return copies. The returned submittal will indicate one of the following
actions:
01330-2
Submittals
a.
If the review indicates that the material, equipment, or work method
complies with the Specifications, submittal copies will be marked
“NO EXCEPTIONS TAKEN”. In this event, the CONTRACTOR
may begin to implement the work method or incorporate the material
or equipment covered by the submittal.
b.
If the review indicates limited corrections are required, copies will be
marked “FURNISH AS NOTED”. The CONTRACTOR may begin
implementing the work method or incorporating the material and
equipment covered by the submittal in accordance with the noted
corrections. Where submittal information will be incorporated in
Operation and Maintenance data, a corrected copy shall be provided.
c.
If the review indicates that the submittal is insufficient or contains
incorrect data, copies will be marked “REVISE AND RESUBMIT”.
Except at its own risk, the CONTRACTOR shall not undertake work
covered by this submittal until it has been revised, resubmitted and
returned marked either “NO EXCEPTIONS TAKEN” or “FURNISH
AS NOTED”.
d.
D.
If the review indicates that the material, equipment, or work method
do not comply with the Specifications, copies of the submittal will be
marked “REJECTED”. Submittals with deviations that have not
been identified clearly may be rejected. Except at its own risk, the
CONTRACTOR shall not undertake the work covered by such
submittals until a new submittal is made and returned marked either
”NO EXCEPTIONS TAKEN” or “FURNISH AS NOTED”.
Drawings
1.
The term “shop drawings” includes drawings, diagrams, layouts, schematic,
descriptive literature, illustrations schedules performance and test data, and
similar materials furnished by CONTRACTOR to explain in detail specific
portions of the work required by the Contract
2.
CONTRACTOR shall coordinate all such drawings, and review them for
legibility, accuracy, completeness and compliance with contract requirements
and shall indicate this approval thereon as evidence of such coordination and
review. Shop drawing submitted to the ENGINEER OWNER without
evidence of CONTRACTOR’s approval will be returned for resubmission.
3.
Shop drawing shall be clearly identified with the name and project number of
this contract, and references to applicable specification paragraphs and
contract drawings. When catalog pages are submitted, applicable items shall
be clearly identified.
4.
CONTRACTOR shall stamp his approval on shop drawings prior to
submission to the ENGINEER OWNER as indication of his checking and
verification of dimensions and coordination with interrelated items. Stamp
shall read:
“(CONTRACTOR’s Name) represents that we have determined and
verified all field dimensions and measurements, field construction
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01330-3
Submittals
criteria, materials, catalog numbers and similar data, and that we
have checked with the requirements of the Specifications and
Drawings, the Contract Documents, and General Conditions”.
Marks on drawings by CONTRACTOR shall not be in red. Any marks by
CONTRACTOR shall be duplicated on all copies submitted.
E.
5.
If shop drawings show variations from contract requirements,
CONTRACTOR shall describe such variations in writing, separate from the
drawings, at time of submission. All such variations must be approved by
the ENGINEER OWNER. If ENGINEER OWNER approves any such
variations, he shall issue an appropriate contract modification, except that, if
the variation is minor and does not involve a change in price or in time of
performance, a modification need not be issued.
6.
Should the CONTRACTOR propose any item on his shop drawings or
incorporate an item into the work, and that item should subsequently prove to
be defective or otherwise unsatisfactory, (regardless of the ENGINEER’s
OWNER’s preliminary review), the CONTRACTOR shall, at his own
expense, replace the item with another item that will perform satisfactorily.
Certificates
For those items called for in individual sections, furnish six (6) certificates of
compliance from manufacturers or suppliers certifying that materials or equipment
being furnished under the Contract comply with the requirements of these
Specifications.
F.
Samples
Samples shall be sufficient in size to clearly illustrate functional characteristics and
full range of color, texture, and pattern.
G.
Effect of Review of CONTRACTOR’s Submittals
Review of drawings, data, methods of work, or information regarding materials or
equipment the CONTRACTOR proposes to provide, shall not relieve the contractor
of its responsibility for errors therein and shall not be regarded as an assumption of
risks or liability by the ENGINEER or the OWNER, or by any officer or employee
thereof, and the CONTRACTOR shall have no claim under the Contract on account
of the failure or partial failure, of the method of work, material, or equipment so
reviewed. A mark of “NO EXCEPTIONS TAKEN” or “FURNISH AS NOTED”
shall mean that the OWNER has no objection to the CONTRACTOR, upon its own
responsibility, using the plan or method of work proposed, or providing the materials
or equipment proposed.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01330-4
Submittals
SECTION 01425
STANDARD REFERENCES
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Reference to standards, specifications, manuals, or codes of any technical society,
organization, or association, or to the laws or regulations of any governmental
authority, whether such reference be specific or by implication, shall mean the latest
standard specification, manual, code, or laws or regulations in effect at the time of
opening of Bids, except as may be otherwise specifically stated. However, no
provision of any referenced standard, specifications manual or code (whether or not
specially incorporated by reference in the Contact Documents) shall be effective to
change the duties and responsibilities of OWNER, CONTRACTOR, or ENGINEER,
or any of their consultants, agents or employees from those set forth in the Contract
Documents, nor shall it be effective to assign to ENGINEER, or any of
ENGINEER’s Consultants, agents, or employees, any duty or authority to supervise
or direct the furnishing or performance of the Work.
Whenever used in the Contract Documents, the following abbreviations will have the
meanings listed:
AASHTO
American Association of State Highway and Transportation
Officials
444 North Capital Street, N.W., Suite 225
Washington, DC 20001
ACI
American Concrete Institute
P. O. Box 19150
Detroit, MI
ACPA
American Concrete Pipe Association
AISC
American Iron and Steel Institute
150 East 42nd Street
New York, NY 10017
American Iron and Steel Institute
150 East 42nd Street
New York, NY 10017
AISI
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ANSI
American National Standards Institute, Inc.
1430 Broadway
New York, NY 10017
AREMA
American Railway Engineering
and Maintenance-of-Way Association
8201 Corporate Drive, Suite 1125
Landover, MD 20785
01425-1
Standard References
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ASCE
American Society of Civil Engineers
345 East 47th Street
New York, NY 10017
ASTM
American Society of Testing and Materials
1916 Race Street
Philadelphia, PA 19103
BOCA
Building Officials and Code Administrators
17926 Halstead
Homewood, IL 60430
CISPI
Cast Iron Soil Pipe Institute
CRSI
Concrete Reinforcing Steel Institute
180 North LaSalle Street
Chicago, IL 60601
CSI
Construction Specifications Institute
DIPRA
Ductile Iron Pipe Research Associations
EPA
Environmental Protection Agency
FEDSPEC
Federal Specifications
General Services Administration
Specification and Consumer Information
Distribution Branch
Washington Navy Yard, Building 197
Washington, DC 20407
FEDSTDS
Federal Standards (see FEDSPEC)
ICBO
International Conference of Building Officials
5360 South Workman Mill Road
Whittier, CA 90601
MILSPEC
Military Specifications
Naval Publications and Forms Center
5801 Tabor Avenue
Philadelphia, PA 19120
NIST
National Institute of Standards and Technology
NPC
National Plumbing Code
NSC
National Safety Council
01425-2
Standard References
OSHA
Occupational Safety and Health Act
U.S. Department of Labor
Occupational and Health Administration
San Francisco Regional Office
450 Golden Gate Avenue, Box 30617
PCA
Portland Cement Association
PCI
Prestressed Concrete Institute
PS
Products Standards Section - U.S. Depart. of Commerce
SSPC
Steel Structures Painting Council
SSPWC
Standard Specifications for Public Works Construction
Building News, Inc.
3055 Overhead Avenue
Los Angeles, CA 90034
TCA
Title Council of America
UBC
Uniform Building Code
Published by ICBO
UL
Underwriter’s Laboratory
207 East Ohio Street
Chicago, IL 60611
UMC
Uniform Mechanical Code
Published by ICBO
UPC
Uniform Plumbing Code
Published by IAPMO
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01425-3
Standard References
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01425-4
Standard References
SECTION 01450
MATERIALS TESTING
PART 1
1.01
1.02
SECTION INCLUDES
A.
Provide such equipment and facilities as are required for conducting field tests and
for collecting and forwarding samples. Do not use any materials or equipment
represented by samples until tests, if required, have been made and the materials or
equipment found to be acceptable. Any product which becomes unfit for use after
approval thereof shall not be incorporated into the work.
B.
Tests shall be made by an accredited testing laboratory selected by the OWNER.
Except as otherwise provided, sampling and testing of all materials and the laboratory
methods and testing equipment shall be in accordance with the latest standards and
tentative methods of the American Society for Testing Materials (ASTM), and the
American Association of Highway and Transportation Officials (AASHTO).
C.
Where additional or specific information concerning testing methods, sample sizes,
etc., is required, such information is included under the applicable sections of the
Specifications. Any modification of, or elaboration on, these test procedures which
may be included for specific materials under their respective sections in the
Specifications shall take precedence over these procedures.
OWNER’S RESPONSIBILITIES
A.
1.03
GENERAL
The OWNER shall be responsible for and shall pay all costs in connection with the
following materials testing:
1.
Soils compaction tests.
2.
Trench backfill.
3.
Pipe and structural bedding.
4.
Tests not called for by the Specifications of materials delivered to the site.
5.
Concrete tests.
6.
Asphalt pavement tests.
CONTRACTOR’S RESPONSIBILITIES
A.
In addition to those inspections and tests called for in the General Conditions,
CONTRACTOR shall also be responsible for preparing and submitting to OWNER a
materials testing schedule for the project and coordinating all materials testing
required for the following:
1.
All retesting for work or materials found defective or unsatisfactory,
including tests covered under 1.02 above.
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01450-1
Materials Testing
1.04
TRANSMITTAL OF TEST REPORTS
Written reports of tests and engineering data furnished by CONTRACTOR for ENGINEER’s
OWNER’s review of materials and equipment proposed to be used in the work shall be
submitted as specified for Shop Drawings.
The testing laboratory retained by the OWNER will furnish three (3) copies of a written
report of each test performed by laboratory personnel in the field or laboratory. Two (2)
copies of each test report will be transmitted to the ENGINEER OWNER and one (1) copy to
the CONTRACTOR within seven (7) days after each test is completed.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01450-2
Materials Testing
SECTION 01555
TRAFFIC REGULATION
PART 1
1.01
1.02
SECTION INCLUDES
A.
Conformance: City of Fort Collins Traffic Control Regulations, Manual of Uniform
Traffic Control Devices (U.S. Department of Transportation), or applicable statutory
requirements of authority having jurisdiction. Fort Collins regulations take precedence
over Manual of Uniform Traffic Control Devices.
B.
Operations on or about traffic areas and provisions for regulating traffic will be subject
to the regulation of governmental agencies having jurisdiction over the affected areas.
C.
Keep traffic areas free of excavated material, construction equipment, pipe, and other
materials and equipment.
D.
Keep fire hydrants and water control valves free from obstruction and available for use
at all times.
E.
Conduct operations in a manner to avoid unnecessary interference with public and
private roads and drives.
TRAFFIC CONTROL PLAN
A.
1.03
1.04
GENERAL
If a Traffic Control Plan is provided in the Contract Documents, it is to be used as a
guideline for the CONTRACTOR. The CONTRACTOR shall submit his own Traffic
Control Plan for approval by the OWNER. Adjustments to the approved plan may be
required by the OWNER based on actual traffic operation.
FLAGMEN
A.
Required where necessary to provide for public safety, or the regulation of traffic, or by
jurisdictional authorities.
B.
Shall be properly equipped and certified by ATSSA.
WARNING SIGNS AND LIGHTS
A.
Provide barricades and warning signs for:
1.
Open trenches and other excavations.
2.
Obstructions, such as material piles, equipment (moving or parked), piled
embankment.
B.
Illuminate by means of warning lights all barricades and obstructions from sunset to
sunrise.
C.
Protect roads and driveways by effective barricades on which are placed acceptable
warning signs.
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01555-1
Traffic Regulation
D.
1.05
PARKING
A.
1.06
Barricades and warning signs must be acceptable to the ENGINEER OWNER.
The CONTRACTOR shall designate parking areas with the approval of the OWNER for
the use of all construction workers and others performing work or furnishing services in
connection with the project so as avoid interference with public traffic, OWNER's
operations, or construction activities.
ROADWAY USAGE BETWEEN OPERATIONS
A.
At all times when work is not actually in progress, CONTRACTOR shall make passable
and shall open to traffic such portions of the project and temporary roadways or portions
thereof as may be agreed upon between CONTRACTOR and OWNER and all
authorities having jurisdiction over any properties involved.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01555-2
Traffic Regulation
SECTION 01635
SUBSTITUTIONS AND PRODUCT OPTIONS
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Description
1.
This section describes the procedure required by the CONTRACTOR for
product substitutions.
2.
Requests for Substitution
3.
a.
Base all bids on materials, equipment and procedures specified.
b.
Certain types of equipment and kinds of material are described in
specifications by means of trade names and catalog numbers, and/or
manufacturer’s names. Where this occurs, it is not intended to
exclude from consideration such types of equipment and kinds of
material bearing other trade names, catalog numbers and/or
manufacturer’s names, capable of accomplishing purpose of types of
equipment or kinds of material specifically indicated.
c.
Other types of equipment and kinds of material may be acceptable to
the OWNER and ENGINEER.
d.
Types of equipment, kinds of material and methods of construction,
if not specifically indicated must be approved in writing by
ENGINEER and the OWNER.
Submission of Requests for Substitution
a.
After Notice to Proceed, the OWNER/ENGINEER will consider
written requests for substitutions of products, materials, systems or
other items.
b.
The ENGINEER OWNER reserves the right to require substitute
items to comply color and pattern-wise with base specified items, if
necessary to secure “design intent”.
c.
Submit six (6) copies of request for substitution. Include in request:
1)
Complete data substantiating compliance of proposed
substitute with Contract Documents.
2)
For products:
i.
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Product identification, including manufacturer’s
name.
01635-1
Substitutions and
Product Options
3)
d.
4.
Manufacturer’s literature, marked to indicate
specific model, type, size, and options to be
considered: Product description; performance and
test data; reference standards; difference in power
demand; dimensional differences for specified unit.
iii.
Name and address of similar projects on which
product was used, date of installation, and field
performance data.
For construction methods:
i.
Detailed description of proposed method.
ii.
Drawings illustrating methods.
4)
Itemized comparison of proposed substitution with product
or method specified.
5)
Data relating to changes in construction schedule.
6)
Relation to separate contracts.
7)
Accurate cost data on proposed substitution in comparison
with product or method specified.
In making request for substitution, or in using an approved substitute
item, Supplier/Manufacturer represents.
1)
He has personally investigated proposed product or method,
and has determined that it is equal or superior in all respects
to that specified and that it will perform function for which it
is intended.
2)
He will provide same guarantee for substitute item as for
product or method specified.
3)
He will coordinate installation of accepted substitution into
work, to include building modifications if necessary, making
such changes as may be required for work to be complete in
all aspects.
4)
He waives all claims for additional costs related to
substitution which subsequently become apparent.
Substitutions
a.
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ii.
Request sufficiently in advance to avoid delay in construction.
01635-2
Substitutions and
Product Options
5.
6.
CONTRACTOR’s Option
a.
For products specified only by reference standards, select any
product meeting standards by any manufacturer, indicate selected
type in submission.
b.
For products specified by naming several products or manufacturers,
select any product and manufacturer named, indicate selected type in
submission.
c.
For products specified by naming one or more products, but
indicating option of selecting equivalent products by stating “or
equivalent” after specified product, CONTRACTOR must submit
request, as required for substitution, for any product not specifically
named.
Rejection of Substitution or Optional Item
a.
Substitutions and/or options will not be considered if:
1)
They are indicated or implied on shop drawings, or project
data submittals, without formal request submitted in
accordance with this section.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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Substitutions and
Product Options
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01635-4
Substitutions and
Product Options
SECTION 01650
MATERIAL DELIVERY, STORAGE, AND HANDLING
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Equipment, products and materials shall be shipped, handled, stored, and installed in
ways which will prevent damage to the items. Damaged items will not be permitted
as part of the work except in cases of minor damage that have been satisfactorily
repaired and are acceptable to the ENGINEER OWNER.
B.
Pipe: Pipe and appurtenances shall be handled, stored, and installed as recommended
by the manufacturer. Pipes with paint, tape coatings, linings or the like shall be
stored to protect the coating or lining from physical damage or other deterioration.
Pipe shipped with interior bracing shall have the bracing removed only when
recommended by the pipe manufacturer.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01650-1
Material Delivery
Storage, and Handling
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01650-2
Material Delivery
Storage, and Handling
SECTION 01710
SITE CONDITIONS
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
General
1. The CONTRACTOR acknowledges that he has satisfied himself as to the nature and
location of the work, the general and local conditions, particularly those bearing upon
access to the site; handling, storage, and disposal of materials; availability of water,
electricity and roads; uncertainties of weather, river stages, or similar physical conditions
at the site; the conformation and conditions of the ground; the equipment and facilities
needed preliminary to and during the execution of the work; and all other matters which
can in any way affect the work or the cost thereof under this Contract.
2. The CONTRACTOR further acknowledges that he has satisfied himself as to the
character, quality and quantity of surface and subsurface materials to be encountered
from his inspection of the site and from reviewing any available records of exploratory
work furnished by the OWNER or included in these Documents. Failure by the
CONTRACTOR to acquaint himself with the physical conditions of the site and all the
available information will not relieve him from responsibility for properly estimating the
difficulty or cost of successfully performing the work.
3.
PART 2
2.01
The CONTRACTOR warrants that as a result of his examination and investigation of all
the aforesaid data that he can perform the work in a good and workmanlike manner and
to the satisfaction of the OWNER. The OWNER assumes no responsibility for any
representations made by any of its officers or agents during or prior to the execution of
this Contract, unless (1) such representations are expressly stated in the Contract, and (2)
the Contract expressly provides that the responsibility therefore is assumed by the
OWNER.
PRODUCTS
INFORMATION ON SITE CONDITIONS
A.
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Any information obtained by the ENGINEER regarding site conditions, subsurface
information, groundwater elevations, existing construction of site facilities, and similar
data will be available for inspection, as applicable, at the office of the ENGINEER upon
request. Such information is offered as supplementary information only. Neither the
ENGINEER nor the OWNER assumes any responsibility for the completeness or
interpretation of such supplementary information.
01710-1
Site Conditions
1.
2.
Differing Subsurface Conditions:
a.
In the event that the subsurface or latent physical conditions are found
materially different from those indicated in these Documents, and
differing materially from those ordinarily encountered and generally
recognized as inherent in the character of work covered in these
Contract Documents, the CONTRACTOR shall promptly, and before
such conditions are disturbed, notify the ENGINEER OWNER in
writing of such changed conditions.
b.
The ENGINEER OWNER will investigate such conditions promptly
and following this investigation, the CONTRACTOR shall proceed
with the work, unless otherwise instructed by the ENGINEER
OWNER. If the ENGINEER OWNER finds that such conditions do so
materially differ and cause an increase or decrease in the cost of or in
the time required for performing the work, the ENGINEER OWNER
will recommend to the OWNER the amount of adjustment in cost and
time he considers reasonable. The OWNER will make the final
decision on all Change Orders to the Contract regarding any adjustment
in cost or time for completion.
Underground Utilities:
a.
PART 3
3.01
Known utilities and structures adjacent to or encountered in the work
are shown on the Drawings. The locations shown are taken from
existing records and the best information available from existing utility
plans, however, it is expected that there may be some discrepancies and
omissions in the locations and quantities of utilities and structures
shown. Those shown are for the convenience of the CONTRACTOR
only, and no responsibility is assumed by either the OWNER or the
ENGINEER OWNER for their accuracy or completeness.
EXECUTION
GENERAL
A.
Where the CONTRACTOR's operations could cause damage or inconvenience to
railway, telegraph, telephone, television, oil, gas, electricity, water, sewer, or irrigation
systems, the operations shall be suspended until all arrangements necessary for the
protection of these utilities and services have been made by the CONTRACTOR.
B.
Notify all utility offices which are affected by the construction operation at least 48
hours in advance. Under no circumstances expose any utility without first obtaining
permission from the appropriate agency. Once permission has been granted, locate,
expose, and provide temporary support for all existing underground utilities.
C.
The CONTRACTOR shall protect all utility poles from damage. If interfering power
poles, telephone poles, guy wires, or anchors are encountered, notify the ENGINEER
OWNER and the appropriate utility company at least 48 hours in advance of
construction operations to permit the necessary arrangements for protection or relocation
of the interfering structure.
D.
The CONTRACTOR shall be solely and directly responsible to the owner and operators
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01710-2
Site Conditions
of such properties for any damage, injury, expense, loss, inconvenience, delay, suits,
actions, or claims of any character brought because of any injuries or damage which may
result from the construction operations under this Contract.
3.02
E.
Neither the OWNER nor its officers or agents shall be responsible to the
CONTRACTOR for damages as a result of the CONTRACTOR's failure to protect
utilities encountered in the work.
F.
If the CONTRACTOR while performing the Contract discovers utility facilities not
identified in the Drawings or Specifications, he shall immediately notify the OWNER,
utility, and the ENGINEER in writing.
G.
In the event of interruption to domestic water, sewer, storm drain, or other utility
services as a result of accidental breakage due to construction operations, promptly
notify the proper authority. Cooperate with said authority in the restoration of service as
promptly as possible and bear all costs of repair.
H.
The CONTRACTOR shall replace, at his own expense, any and all other existing
utilities or structures removed or damaged during construction, unless otherwise
provided for in these Contract Documents or ordered by the ENGINEER OWNER.
INTERFERING STRUCTURES
A.
3.03
FIELD RELOCATION
A.
3.04
The CONTRACTOR shall take necessary precautions to prevent damage to existing
structures whether on the surface, aboveground, or underground. An attempt has been
made to show major structures on the Drawings. The completeness and accuracy cannot
be guaranteed, and it is presented simply as a guide to avoid known possible difficulties.
During the progress of construction, it is expected that minor relocations of the work will
be necessary. Such relocations shall be made only by direction of the ENGINEER
OWNER. If existing structures are encountered that prevent the construction, and that
are not properly shown on the Drawings, notify the ENGINEER OWNER before
continuing with the construction in order that the ENGINEER OWNER may make such
field revision as necessary to avoid conflict with the existing structures. If the
CONTRACTOR shall fail to so notify the ENGINEER OWNER when an existing
structure is encountered, and shall proceed with the construction despite the interference,
he shall do so at his own risk.
EASEMENTS
A.
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Where portions of the work are located on public or private property, easements and
permits will be obtained by the OWNER. Easements will provide for the use of the
property for construction purposes to the extent indicated on the easements. Copies of
these easements and permits are available upon request to the OWNER. It shall be the
CONTRACTOR's responsibility to determine the adequacy of the easement obtained in
every case and to abide by all requirements and provisions of the easement. The
CONTRACTOR shall confine his construction operations to within the easement limits
or make special arrangements with the property owners or appropriate public agency for
the additional area required. Any damage to property, either inside or outside the limits
of the easements provided by the OWNER, shall be the responsibility of the
CONTRACTOR as specified herein. The CONTRACTOR shall remove, protect, and
01710-3
Site Conditions
replace all fences or other items encountered on public or private property. Before final
payment will be authorized by the ENGINEER OWNER, the CONTRACTOR will be
required to furnish the OWNER with written releases from property owners or public
agencies where side agreements or special easements have been made by the
CONTRACTOR or where the CONTRACTOR's operations, for any reason, have not
been kept within the construction right-of-way obtained by the OWNER.
B.
3.05
It is anticipated that the required easements and permits will be obtained before
construction is started. However, should the procurement of any easement or permit be
delayed, the CONTRACTOR shall schedule and perform the work around these areas
until such a time as the easement or permit has been secured.
LAND MONUMENTS
A.
The CONTRACTOR shall notify the ENGINEER OWNER of any existing Federal,
State, Town, County, and private land monuments encountered. Private monuments
shall be preserved, or replaced by a licensed surveyor at the CONTRACTOR's expense.
When Government monuments are encountered, the CONTRACTOR shall notify the
ENGINEER OWNER at least two (2) weeks in advance of the proposed construction in
order that the ENGINEER OWNER will have ample opportunity to notify the proper
authority and reference these monuments for later replacement.
END OF SECTION
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01710-4
Site Conditions
SECTION 01720
FIELD ENGINEERING AND SURVEYING
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
Surveying: It shall be the responsibility of the CONTRACTOR to provide
construction staking for horizontal and vertical alignment of the centerline, grading,
and all appurtenant features of the work including all offset lines necessary for
construction. The CONTRACTOR shall be responsible for staking the limits of
construction.
All construction surveying provided by the CONTRACTOR shall be completed
under the supervision of a Colorado Registered Land Surveyor.
The OWNER will provide the elevations and descriptions of the original and
temporary project benchmarks. The OWNER will also provide two (2) additional
benchmarks in a location within the limits of construction at the request of the
CONTRACTOR.
B.
Supervision: The CONTRACTOR shall have supervision, knowledge of the project
requirements and proper installation, and construction procedures, available in the
field at all times that work is progressing.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01720-1
Field Engineering
and Surveying
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01720-2
Field Engineering
and Surveying
SECTION 01745
ENVIRONMENTAL CONTROLS
PART 1
1.01
SECTION INCLUDES
A.
PART 2
2.01
GENERAL
The work of this section consists of obtaining permits and providing environmental
controls consistent with regulatory permits through the duration of the work required
under this project.
PRODUCTS
MATERIALS
A.
Dust Control
Dust control agents may be necessary in addition to wetting down with water. Dust
control agents may be used only after prior approval by the OWNER.
PART 3
3.01
3.02
DUST CONTROL APPLICATION
A.
The CONTRACTOR shall execute work by methods to minimize raising dust from
construction operations.
B.
The CONTRACTOR shall provide and apply dust control at all times, including
evenings, holidays and weekends, as required to abate dust nuisance on and about the
site that is a direct result of construction activities. The use of non-approved
chemicals, oil, or similar palliatives will not be allowed. Dust control agents may be
used only after prior approval of the OWNER. The CONTRACTOR shall be
required to provide sufficient quantities of equipment and personnel for dust control
sufficient to prevent dust nuisance on and about the site.
C.
The OWNER will have authority to order dust control work whenever in its opinion
it is required, and there shall be no additional cost to the OWNER. The
CONTRACTOR shall be expected to maintain dust control measures effectively
whether the OWNER or ENGINEER OWNER specifically orders such Work.
PRESERVATION OF NATURAL FEATURES
A.
3.03
EXECUTION
Confine operations as much as possible. Exercise special care to maintain natural
surroundings in an undamaged condition. Within the work limits, barricade trees,
rock outcroppings, and natural features to be preserved.
HOUSEKEEPING
A.
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Keep project neat, orderly, and in a safe condition at all times. Store and use
equipment, tools, and materials in a manner that does not present a hazard.
Immediately remove all rubbish. Do not allow rubbish to accumulate. Provide on-
01745-1
Environmental Controls
site containers for collection of rubbish and dispose of it at frequent intervals during
progress of work.
3.04
DISPOSAL
A.
Disposal of Waste (Unsuitable) Materials
All material determined by the ENGINEER OWNER to be waste will be disposed of
in approved landfill in a manner meeting all regulations. Dispose of waste materials,
legally, at public or private dumping areas. Do not bury wastes inside of the limits of
construction. All costs for dump fees, permits, etc., to be borne by the
CONTRACTOR.
B.
Disposal of Garbage and Other Construction Materials
Provide sanitary containers/dumpsters and haul away contents such that no overflow
exists.
3.05
C.
Excess excavation shall become the property of the CONTRACTOR and shall be
legally disposed of by him outside the limits of construction to an approved disposal
site. Excess excavated material suitable for backfill shall not be disposed of until all
backfill operations are complete.
D.
The CONTRACTOR is to immediately inform ENGINEER OWNER of any
hazardous materials encountered during construction. Dispose of waste materials
legally at private or public facilities.
BURNING
A.
3.06
WATER CONTROL
A.
3.07
No burning of debris will be permitted.
The project work is subject to periodic flooding due to rainfall and snowmelt, flows
from adjacent developed areas and storm water pipes and ground water flows from
saturated soils or other ground water sources. The CONTRACTOR shall take all
necessary steps to remove these flows from the work site.
NOISE CONTROL
A.
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All mechanical equipment shall be equipped with the best available mufflers to
reduce noise. The CONTRACTOR shall be responsible for obtaining any necessary
permits and shall limit noise to the permitted levels. Noise level monitoring shall be
performed by the CONTRACTOR as necessary to show that the permitted levels are
not being exceeded.
01745-2
Environmental Controls
3.08
PERMITS
A.
All work must be performed in accordance with all applicable regulatory permits.
1. It shall be the responsibility of the CONTRACTOR to obtain a Construction
Dewatering Permit from the Colorado State Health Department for any
dewatering operations that will be discharged into any drainageways, open
channels, or irrigation ditches. The CONTRACTOR shall be responsible for any
testing required under the Construction Dewatering Permit.
2. It shall be the responsibility of the CONTRACTOR to submit a general permit
application to the Colorado State Health Department for stormwater discharges
associated with construction activity and to comply with all conditions of the
permit. The CONTRACTOR shall also submit a Stormwater Management Plan
for review by the OWNER.
B.
The OWNER Will Obtain the Following Permits, if applicable
1.
Floodplain Use Permit
2.
Larimer County Right-of-Way Permit
3.
All Applicable Railroad Permits
4.
Applicable 404 Permits
It shall be the responsibility of the CONTRACTOR to prepare and obtain an
approved Erosion and Sediment Control Plan from the OWNER.
The
CONTRACTOR must obtain all other applicable permits.
END OF SECTION
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01745-3
Environmental Controls
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01745-4
Environmental Controls
SECTION 01780
CONTRACT CLOSEOUT
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
The following project closeout procedure defines the responsibilities of the
CONTRACTOR, OWNER, and ENGINEER in closing the project.
Step 1: CONTRACTOR advises the ENGINEER OWNER in writing that he has
reached "Substantial Completion" and provides a list of items to be completed or
corrected.
Closeout may be conducted by areas or portions of the work if requested by the
OWNER.
Step 2: ENGINEER OWNER inspects the work to determine if it is substantially
complete, and issues a Certificate of Substantial Completion plus a "Punch List" of
items to be completed or corrected.
Substantial Completion - Definition
1.
Reference General Conditions, Substantial Completion
Step 3: CONTRACTOR completes and/or corrects all punch list items and notifies
the ENGINEER in writing that his work is ready for final inspection. At this time, a
final application for payment is submitted.
Step 4: ENGINEER OWNER makes final inspection. When the work is found to be
acceptable under the Contract Documents, and the Contract fully performed, the
Engineer will issue a final Certificate for Payment.
B.
Final Paperwork:
Prior to Final Payment and Acceptance, the CONTRACTOR shall deliver the
following items to the ENGINEER OWNER:
CONTRACTOR's Two Year Guarantee of Materials and Workmanship.
All Guarantees, Warranties and Submittals, as specified.
Receipts for Extra Materials Delivered to the OWNER.
Final Application for Payment.
Consent of Surety to Final Payment.
CONTRACTOR's Affidavit of Release of Liens.
Releases from Property Owners for Special Easements.
Project Record Documents.
Red-lined as-built drawings.
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01780-1
Contract Closeout
C.
Definitions
1.
Substantial Completion for South Bus Maintenance Facility Parking/Driving
Surface and Site Improvement Project shall be defined as the completion of all
asphalt pavement, concrete driveway, concrete entrance ramp, pans, curb and
gutter, sidewalk, bus canopy pavement, bus canopy wheel stops, and pavement
striping. The parking lots, driveways, and bus canopies must be open to all
vehicular traffic.
2.
Final Completion shall be defined as the completion of all Work including
cleanup, Project Record Documents shall be turned over to the OWNER, all
punch list items completed, and all processing of all change orders. The Work
must be ready for final payment and acceptance.
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION (Not Applicable)
END OF SECTION
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01780-2
Contract Closeout
DIVISION 2 – SITE WORK
SECTION 02220
REMOVAL OF STRUCTURES AND
OBSTRUCTIONS
SECTION 02315
EXCAVATION AND EMBANKMENT
SECTION 02340
FLY ASH STABILIZATION
SECTION 02360
EROSION AND SEDIMENT CONTROL
SECTION 02710
AGGREGATE BASE COURSE
SECTION 02740
ASPHALT PAVEMENT
SECTION 02770
SIDEWALK, CURB AND GUTTER,
AND MISCELLANEOUS CONCRETE
SECTION 02220
REMOVAL OF STRUCTURES AND OBSTRUCTIONS
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
This work consists of the removal and disposal of trees, slope and ditch protection,
abandoned utility services, curb, gutter, pipes, sidewalk, appurtenances, fences, signs,
foundations, pavements, pavement markings, and any other obstructions that are not
designated or permitted to remain. It shall also include salvaging, stockpiling and
loading salvable materials, sandblasting, plugging structures, cleaning culverts, and
sawing and cutting to facilitate controlled breaking and removal of concrete and
asphalt to a neat line. Except in areas to be excavated, the resulting trenches, holes,
and pits shall be backfilled.
Materials removed and not designated to be salvaged or incorporated into the work
shall become the property of the CONTRACTOR.
1.02
RELATED SECTIONS
A.
Section 02315 – Excavation and Embankment
PART 2
PRODUCTS (Not Applicable)
PART 3
EXECUTION
3.01
CONSTRUCTION REQUIREMENTS
A.
General: The CONTRACTOR shall raze, remove, and dispose of all structures and
obstructions which are identified on the project, except utilities, structures and
obstructions removed under other contractual agreements or as otherwise provided
for in the Contract Documents, and salvable material designed to remain the property
of the OWNER.
B.
Salvable Material: All salvable material designated in the Contract or by the
ENGINEER OWNER to remain the property of the OWNER shall be removed
without damage, in sections or pieces which may be readily transported, and shall be
stockpiled by the CONTRACTOR at specified locations within the project limits.
The CONTRACTOR shall safeguard salvable materials and shall be responsible for
the expense of repairing or replacing damaged or missing material until it is
incorporated into the work, or is loaded onto the OWNER’s equipment by the
CONTRACTOR.
C.
Signs and Traffic Signals: Removal of signs shall include removal of posts, footings,
pedestals, sign panels, and brackets. Concrete adhering to salvable sign posts shall
be removed.
Removal of sign panel shall include removal of the panel and its attachment hardware
from the existing installation and adjusting the spacing of the remaining panels.
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02220-1
Removal of Structures
and Obstructions
The removal of traffic signal items shall include poles, mast arms, signal heads, span
wires, footings, all attachment hardware, and other incidental materials. Removal of
signal pole or pedestal pole shall include pole, span wire, cable, signal heads,
overhead sign support wire, footings, and pedestrian push buttons. Removal of
traffic signal controller and cabinet shall include removal of the footing and all
auxiliary equipment contained within the cabinet.
D.
Pavements, Sidewalks, and Curbs: All concrete pavements, sidewalks, structures,
curbs, gutters, etc., designated for removal, shall be disposed of off-site by the
CONTRACTOR at his expense. Sawing of concrete and asphalt shall be done to a
true line, with a vertical face, unless otherwise specified. The minimum depth of a
saw cut shall be 2 inches. For reinforced concrete, the minimum depth shall be 2
inches, or to the depth of the reinforcing steel, whichever occurs first.
END OF SECTION
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02220-2
Removal of Structures
and Obstructions
SECTION 02315
EXCAVATION AND EMBANKMENT
PART 1
1.01
SECTION INCLUDES
A.
1.02
1.03
This work shall consist of excavation, embankment fill, disposal of excess material,
shaping, and compaction of all material encountered within the limits of work,
including excavation and fill for structures. The excavation shall include, but is not
limited to, the native soils which must be excavated for the project work. All work
shall be completed in accordance with these Specifications and the lines and grades on
the Drawings.
DEFINITIONS
A.
Unclassified Excavation shall consist of the excavation of all materials of whatever
character required of the work, obtained within the right-of-way.
B.
Muck Excavation shall consist of the removal of mixtures of soils and organic matter
not suitable for foundation material and replacement with approved material.
C.
Rock Excavation shall consist of igneous, metamorphic and sedimentary rock which
cannot be excavated without the use of rippers, and all boulders or other detached
stones each having a volume of 1/2 cubic yard or more, as determined by physical or
visual measurement. It shall also include replacement with approved material as
required.
D.
Embankment Material shall consist of approved material acquired from excavation or
from outside sources, hauled and placed in embankments.
DESCRIPTION
A.
1.04
GENERAL
This work shall consist of excavation, disposal, placement, and compaction of all
material encountered within the limits of the work, and not being completed under
some other item, necessary for the construction of the project in accordance with the
Specifications and the lines, grades, and typical cross-sections shown on the
Drawings. All excavation will be classified, “unclassified excavation”, or “muck
excavation” or “rock excavation”, as hereafter described. All embankment will be
classified “embankment material” as hereafter described.
QUALITY ASSURANCE
A.
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Final topography and/or cross-sections will be surveyed of areas that are to finished
grade and compared to the design section for accuracy. Final grade shall match
design grades within the tolerances discussed in PART 3 EXECUTION.
02315-1
Excavation and Embankment
PART 2
2.01
MATERIALS
A.
Embankment material may consist of approved material acquired from excavations
or material hauled from outside the project limits. Suitable material identified on-site
shall be used first for embankments and backfill. Excess excavated native soils which
are not used as embankment or backfill shall become the property of the
CONTRACTOR and shall be disposed of off-site by the CONTRACTOR, in a
location acceptable to the ENGINEER OWNER.
B.
Muck excavation shall also include the replacement of excavated muck with
uniformly graded rock, riprap, on-site or imported soils, or other material whichever
is most suitable for the specific situation encountered. The ENGINEER OWNER
will determine which type of aggregate or other material which shall be used after
observing the specific site conditions.
PART 3
3.01
PRODUCTS
EXECUTION
GENERAL EXCAVATION/EMBANKMENT
A.
General: The excavation and embankment for the project work should be finished to
reasonably smooth and uniform surfaces. Variation from the subgrade plane shall not
be more than .08 feet in soil or more than .08 feet above or .50 below in rock. Where
bituminous or concrete surfacing materials are to be placed directly on the subgrade,
the subgrade plane shall not vary more than 0.04 feet. Materials shall not be wasted
without permission of the ENGINEER OWNER. Excavation operations shall be
conducted so that material outside of the limits of slopes will not be disturbed. Prior
to beginning grading operations in any area, all necessary clearing and grubbing in
that area shall have been performed in accordance with Section 02230 of these
Specifications.
The CONTRACTOR shall notify the ENGINEER OWNER in sufficient time before
beginning excavation or embankment such that the necessary topography and/or
cross-sections may be taken. The CONTRACTOR shall not excavate beyond the
dimensions and elevations established, and material shall not be removed prior to
surveying the site.
When the CONTRACTOR’s excavating operations encounter remains of pre-historic
people’s dwelling sites or artifacts of historical or archaeological significance, the
operations, shall be temporarily discontinued. The ENGINEER OWNER will
contact archaeological authorities to determine the disposition thereof. When
directed, the CONTRACTOR shall excavate the site in such a manner as to preserve
the artifacts encountered and shall remove them for delivery to the custody of the
proper state authorities. Such excavation will be considered and paid for as extra
work.
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02315-2
Excavation and Embankment
B.
Excavation:
1.
Unclassified: All excess suitable material excavated from the project site
and not used for embankment shall be removed from the project site and
become the property of the CONTRACTOR. Where material encountered
within the limit of the work is considered unsuitable for embankment (fills)
on any portion of this project work, such material shall be excavated as
directed by the ENGINEER OWNER and replaced with suitable fill material.
All unsuitable excavated material from excavation consisting of any type of
debris (surface or buried), excavated rock, bedrock or rocks larger than 6
inches in diameter and boulders shall be hauled from the project site and
disposed of by the CONTRACTOR at his expense. Debris is defined as
“anything that is not earth which exists at the job site”.
2.
Muck: Where excavation to the finished grade section results in a subgrade
or slopes of unsuitable soil, the ENGINEER OWNER may require the
CONTRACTOR to remove the unsuitable materials and backfill to the
finished graded section with approved material. Disposal of the material
shall be at the CONTRACTOR’s expense.
Good surface drainage shall be provided around all permanent cuts to direct
surface runoff away from the cut face.
3.
C.
Rock: Unless otherwise specified, rock shall be excavated to a minimum
depth of 0.5 feet below subgrade within the limits of the channel area, and
the excavation shall be backfilled with material shown on the Drawings or as
designated by the ENGINEER OWNER. Disposal of material and
replacement with suitable approved material shall be at the
CONTRACTOR’s expense.
Embankment Construction: Embankment construction shall consist of constructing
all fill areas, including preparation of the areas upon which they are to be placed, the
placing and compacting of approved material within areas where unsuitable materials
have been removed, the preparation of subgrade for pavement, and the placing and
compacting of embankment material in holes, pits and other depressions within the
project area. Only approved materials shall be used in the construction of
embankments and backfills.
Approved materials shall consist of clean on-site cohesive soils or approved imported
soils. On-site materials should not be used without the approval of the ENGINEER
OWNER if select material is called for in the Drawings. On-site cohesive soils are
suitable for use as compacted fill provided the following recommendations are met:
Percent Finer by Weight
(ASTM C136)
Gradation
½-Inch
3/8-Inch
No. 4 Sieve
No. 200 Sieve
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02315-3
100
70 – 100
50 – 100
60 (min)
Excavation and Embankment
•
•
•
Liquid Limit
Plasticity Index
In-Situ Coefficient of Permeability
35 (max)
20 (max)
1x10-6 cm/sec (min)
On-site cohesive soils or imported soils should be placed and compacted in
horizontal lifts, using equipment and procedures that will produce recommended
moisture contents and densities throughout the lift and embankment height. On-site
or imported cohesive soils should be compacted within a moisture content range of
2% below, to 2% above optimum moisture content and compacted to 95% of the
Maximum Standard Proctor Density (ASTM D698).
When embankment is to be placed and compacted on hillsides, or when new
embankment is to be compacted against existing embankments, or when embankment
is built 1/2 width at a time, the slopes that are steeper than 4:1 when measured
longitudinally or at right angles to the adjacent ground shall be continuously benched
over those areas where it is required as the work is brought up in layers. Benching
shall be well keyed and where practical a minimum of 8 feet. Each horizontal cut
shall begin at the intersection of the original ground and the vertical sides of the
previous cuts. Material thus cut out shall be recompacted along with the new
embankment material at the CONTRACTOR’s expense.
The ground surface underlying all fills shall be carefully prepared by removing all
organic matter, scarification to a depth of 8 inches and recompacting to 95% of the
Maximum Standard Proctor Density (ASTM D698) at optimum moisture content +
or - 2% prior to fill placement.
Embankment material shall be placed in horizontal layers not exceeding 8 inches
(loose measurement) and shall be compacted to 95% of the Maximum Standard
Proctor Density (ASTM D698) at optimum moisture content + or - 2%. Effective
spreading equipment shall be used on each lift to obtain uniform thickness prior to
compacting. As the compaction of each layer progresses, continuous leveling and
manipulating will be required to assure uniform density.
For embankments which serve as berms, the downstream portion shall be “keyed”
into the subsurface soils a minimum of 3 feet to enhance the stability of the slope.
Materials which are removed from excavations beneath the water table may be over
the optimum moisture content and will require that they be dried out prior to reusing
them.
Cross hauling or other action as appropriate will be ordered when necessary to insure
that the best available material is placed in critical areas of embankments, including
the top 2 feet of all embankments. No additional payment will be made for cross
hauling ordered by the ENGINEER OWNER.
Frozen materials shall not be used in construction of embankments.
During the construction of the channels, the channel bottom shall be maintained in
such condition that it will be well drained at all times.
Excavation or Embankment (Fill), and Structural Backfill work either completed or
in a stage of completion that is either eroded or washed away or becomes unstable
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02315-4
Excavation and Embankment
due to either rains, snow, snow melt, channel flows or lack of proper water control
shall be either removed and replaced, recompacted or reshaped as directed by the
ENGINEER OWNER and in accordance with the Drawings and Specifications at the
CONTRACTOR’s sole expense. Removed unsuitable materials shall be hauled away
and disposed of at the CONTRACTOR’s expense. Placing of replacement materials
for removed unsuitable materials shall be purchased, placed and compacted at the
CONTRACTOR’s expense.
D.
Proof rolling with a heavy rubber tired roller will be required, if designated on the
Drawings or when ordered by the ENGINEER OWNER. Proof rolling shall be done
after specified compaction has been obtained. Areas found to be weak and those
areas which failed shall be ripped, scarified, wetted if necessary, and recompacted to
the requirements for density and moisture at the CONTRACTOR’s expense.
Proof rolling shall be done with equipment and in a manner acceptable to the
ENGINEER OWNER. Proof rolling as shown on the Drawings or as ordered by the
ENGINEER OWNER shall not be measured and paid for separately, but shall be
included in the unit prices bid for the work.
3.02
EXCAVATION AND BACKFILL FOR STRUCTURES
A.
Poor foundation material for any of the work shall be removed, by the
CONTRACTOR, as directed by the ENGINEER OWNER. The CONTRACTOR will
be compensated for removal and replacement of such materials in accordance with
Muck Excavation.
The CONTRACTOR is cautioned that construction equipment may cause the natural
soils to pump or deform while performing excavation work inside and on footings,
structural floor slabs, or other structure foundation areas.
Foundation materials which are: a) saturated by either surface or subsurface flows
due to the lack of adequate water control or dewatering work by the
CONTRACTOR; b) frozen for any reason; or, c) that are disturbed by the
CONTRACTOR’s work or caused to become unacceptable for foundation material
purposes by means of the CONTRACTOR’s equipment, manpower, or methods of
work shall be removed and replaced by the CONTRACTOR at his expense.
Dewatering should not be conducted by pumping from inside footing, structural floor
slab, or other structure foundation limits. This may decrease the supporting capacity
of the soils.
Care should be taken when excavating the foundations to avoid disturbing the
supporting materials. Excavation by either hand or careful backhoe soil removal,
may be required in excavating the last few inches of material to obtain the subgrade
of any item of the concrete work.
Any over-excavated subgrades that are due to the CONTRACTOR’s actions, shall be
brought back to subgrade elevations by the CONTRACTOR and at his expense in the
following manner:
1.
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For over-excavations of 2 inches or less, either: Backfill and compact with
an approved granular materials; backfill with 1/2 inch crushed rock; or fill
within concrete at the time of the appurtenant structure concrete pour.
02315-5
Excavation and Embankment
2.
For over-excavations greater than 2 inches, backfill and compact with an
approved granular material.
All granular footings, structural floor slabs, or other structure areas shall be
compacted with a vibratory plate compactor prior to placement of concrete,
reinforcing, or bedding materials.
Backfill, and fill within 3 feet of, or adjacent to, all structures and for full height of
the walls, shall be selected non-swelling material. It shall be granular, well graded,
and free from stones larger than 2 inches. Material may be job excavated, but
selectivity will be required as determined by the ENGINEER OWNER. Stockpiled
material, other than topsoil from the excavation shall be used for backfilling unless
an impervious structural backfill is specified. The backfill material shall consist of
either clean on-site granular materials free of stones larger than 2 inches in diameter
with no more than 20% passing the No. 200 sieve, or equivalent imported materials.
All backfill around the structures shall be consolidated by mechanical tamping. The
material shall be placed in 6-inch loose lifts within a range of 2% above to 2% below
the optimum moisture content and compacted to 95% of Maximum Standard Proctor
Density (ASTM D698) for cohesive soils, or to 75% relative density for pervious
material as determined by the relative density of cohesionless soils test, ASTM
D4253.
When specified on the Drawings or as required by the ENGINEER OWNER, Class I
structural backfill shall meet the following gradation requirements:
% by Weight Passing
Square Mesh Sieves
Sieve Size
2-Inch
No. 4
No. 50
No. 200
100
30 - 100
10 – 60
5 – 20
In addition, this material shall have a liquid limit not exceeding 35 and a plasticity
index of not over 6.
Impervious structural backfill, where shown or specified, shall consist of material
having 100% finer than 2 inches in diameter and a minimum of 30% passing a No.
200 U.S. Standard Sieve. The material shall be placed in 6-inch loose lifts within a
range of 2% above to 2% below the optimum moisture content and compacted to
95% of Maximum Standard Proctor Density for cohesive soils as determined by
ASTM D698.
END OF SECTION
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02315-6
Excavation and Embankment
SECTION 02340
FLY ASH STABILIZATION
PART 1
1.01
GENERAL
SECTION INCLUDES
This section covers treating the subgrade, existing subbase or existing base by pulverization, adding
Class "C" fly ash, mixing and compacting of the mixed material to the required density. This item
applies to natural ground or embankment and shall be constructed as specified herein and in
conformity with the typical sections, lines and grades as shown on the plans or as established by the
Engineer.
1.02
RELATED SECTIONS
A.
1.03
SUBMITTALS
A.
PART 2
2.01
Section 02740 – Asphalt Pavement
The CONTRACTOR shall cooperate with the ENGINEER OWNER in obtaining and
providing samples of all specified materials. The CONTRACTOR shall submit certified
laboratory test certificates for all items required in this section.
PRODUCTS
MATERIALS
A.
Fly Ash
Fly ash shall meet ASTM Specification 618, Section 3.2, when sampled and tested in
accordance with Sections 4, 6 and 8, unless otherwise shown on the plans. Fly ash shall be
of the Class "C" designation containing a minimum of 25 percent CaO.
B.
Water
The water used in the stabilized mixture shall be clean, clear, free of sewage, vegetable
matter, oil, acid and alkali. Water known to be potable may be used without testing. All
other sources shall be tested in accordance with AASHTO T-26 and approved by the
ENGINEER OWNER.
2.02
EQUIPMENT
A.
The machinery, tools and equipment necessary for proper prosecution of the work shall be
on the project site and approved by the ENGINEER OWNER prior to the beginning of
construction operations. All machinery, tools and equipment used shall be maintained in a
satisfactory and workmanlike manner.
B.
Fly ash shall be stored and handled in closed weatherproof containers until immediately
before distribution on the road. If storage bins are used, they shall be completely enclosed.
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02340-1
Fly Ash Stabilization
C.
If fly ash is furnished in trucks, each truck shall have the weight of fly ash certified on public
scales or the Contractor shall place a set of standard platform truck scales or hopper scales at
a location approved by the ENGINEER OWNER.
PART 3
3.01
GENERAL
A.
3.02
EXECUTION
It is the primary purpose of this specification to secure a completed course of treated
material which contains a uniform fly ash/soil mixture with no loose or segregated
areas; has a uniform density and moisture content; is well bound for its full depth;
and, has a smooth surface suitable for placing subsequent courses. It shall be the
responsibility of the Contractor to regulate the sequence of his work; to process a
sufficient quantity of material to provide full depth as shown on plans; to use the
proper amounts of fly ash; to maintain the work; and, to rework the courses as
necessary to meet the above requirements.
PREPARATION OF SUBGRADE
A.
Before other construction operations are begun, the subgrade shall be graded and
shaped to enable the fly ash treatment of materials in place, in conformance with the
lines, grades, and thickness shown on the plans. Unsuitable soil or materials shall be
removed and replaced with acceptable material.
The subgrade shall be firm and able to support, without displacement, the
construction equipment and the compaction hereinafter specified. Soft or yielding
subgrade shall be corrected and made stable by scarifying, adding fly ash, and
compacting until it is of uniform stability.
If the Contractor elects to use a cutting and pulverizing machine that will remove the
subgrade material accurately to the secondary grade and pulverize the material at the
same time, he will not be required to expose the secondary grade nor windrow the
material. However, the Contractor shall be required to roll the subgrade, as directed
by the ENGINEER OWNER, before using the pulverizing machine and correct any
soft areas that this rolling may reveal. This method will be permitted only where a
machine is provided which will ensure that the material is cut uniformly to the
proper depth and which has cutters that will plane the secondary grade to a smooth
surface over the entire width of the cut. The machine shall be of such design that
visible indication is given at all times that the machine is cutting to the proper depth.
3.03
APPLICATION
A.
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The fly ash shall be spread by an approved spreader at the rates shown on the plans
or as directed by the ENGINEER OWNER. A motor grader shall not be used to
spread the fly ash. The fly ash shall be distributed at a uniform rate and in such
manner as to reduce
the scattering of fly ash by wind to a minimum. Fly ash
shall not be applied when wind conditions, in the opinion of the ENGINEER
OWNER, are such that blowing fly ash becomes objectionable to traffic or adjacent
property owners.
02340-2
Fly Ash Stabilization
3.04
MIXING
A.
The soil and fly ash shall be thoroughly mixed by approved rotary mixers or other
approved equipment, and the mixing continued until, in the opinion of the
ENGINEER OWNER, a homogeneous, friable mixture of soil and fly ash is
obtained, free from all clods or lumps. Initial mixing after the addition of fly ash
will be accomplished dry or with a minimum of water to prevent fly ash balls.
Water required to achieve the specified moisture content for the mixture should be
added after initial mixing.
If the soil fly ash mixture contains clods, they shall be reduced in size by raking,
blading, disking, harrowing, scarifying or the use of other approved pulverization
methods so that when all nonslaking aggregates retained on the No. 4 sieve are
removed, the remainder of the material shall meet the following requirements when
tested at the field moisture condition or dry by laboratory sieves:
Minimum Passing 1-3/4 inch sieve
Minimum Passing No. 4 sieve
100 percent
60 percent
During final mixing, water shall be added to the materials as directed by the
ENGINEER OWNER, until the proper moisture content has been secured. Water
shall be added through the pulverizing machine or other method acceptable to the
ENGINEER OWNER to develop a uniform, controlled rate addition of the needed
moisture. Final moisture content of the mix, prior to compaction, shall not exceed
the optimum moisture content of the mix by more than 2 percent nor by less than the
optimum by more than 4 percent. Should the natural moisture content of the soil be
above the specified range, aeration of the soil may be required prior to addition of
the fly ash.
3.05
COMPACTION
A.
Compaction of the mixture shall begin immediately after final mixing of the fly ash
and be completed within one hour following addition of fly ash and water. The
material shall be sprinkled as necessary to maintain the optimum moisture.
Compaction of the mixture shall begin at the bottom and shall continue until the
entire depth of mixture is uniformly compacted to a specified density.
All non-uniform (too-wet, too dry or insufficiently treated) areas which appear shall
be corrected immediately by scarifying the areas affected, adding or removing
material as required and reshaping the recompacting by sprinkling and rolling. The
surface of the course shall be maintained in a smooth condition, free from
undulations and ruts, until other work is placed thereon or the work is accepted.
The stabilized section shall be compacted to the extent necessary to provide the density
specified below:
Description
For fly ash treated subgrade, existing
subbase or existing base that will receive
subsequent subbase or base courses
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02340-3
Not less than 95 percent
maximum dry density
(ASTM D-698)
Fly Ash Stabilization
For fly ash treated subbase or base
that will receive surface course
Not less than 98 percent
maximum dry density
(ASTM D-698)
In addition to the requirements specified for density, the full depth of the material
shown on the plans shall be compacted to the extent necessary to remain firm and
stable under construction equipment. After each section is completed, the ENGINEER
OWNER will make tests as necessary. If the material fails to meet the density requirements,
the ENGINEER OWNER may require it to be reworked as necessary to meet those
requirements or require the Contractor to change his construction methods to obtain required
density on the next section. Throughout this entire operation the shape of the course shall be
maintained by blading, and the surface, upon completion, shall be smooth and in conformity
with the typical section shown on the plans and to the established lines and grades. Blading
should be terminated within two hours after blending of the fly ash. Should the material, due
to any reason or cause, lose the required stability, density and finish before the next course is
placed or the work is accepted, it shall be reprocessed, recompacted and refinished at the sole
expense of the Contractor. Reprocessing shall follow the same pattern as the initial
stabilization, including the addition of fly ash.
3.06
FINISHING, CURING AND PREPARATION FOR SURFACING
A.
After the final layer or course of the treated subgrade, subbase or base has been
compacted, it shall be brought to the required lines and grades in accordance with
the typical sections.
1.
The resulting base surface shall be thoroughly rolled with a pneumatic tire
roller and "clipped", "skinned" or "tight bladed" by a power grader to a
depth of approximately 1/4 inch, removing all loosened stabilized material
from the section. Recompaction of the loose material should not be
attempted. The surface shall then be thoroughly compacted with the
pneumatic roller, adding small increments of moisture as needed during
rolling. If plus No. 4 aggregate is present in the mixture, one complete
coverage of the section with the fat wheel roller shall be made immediately
after the "clipping" operation. When directed by the ENGINEER OWNER,
surface finishing methods may be varied from this procedure provided a
dense, uniform surface, is produced. The moisture content of the surface
material must be maintained within the specified range during all finishing
operations. Surface compaction and finishing shall proceed in such a
manner as to produce, in not more than two hours, a smooth, closely knit
surface, free of cracks, ridges or loose material conforming to the crown,
grade and line shown on the plans.
2.
After the fly ash treated course has been finished as specified herein, the
surface shall be protected against rapid drying by either of the following
curing methods for a period of not less than three days or until the surface
or subsequent courses are placed:
a.
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Maintain in a thorough and continuously moist condition by
sprinkling.
02340-4
Fly Ash Stabilization
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b.
Apply a two-inch layer of earth on the completed course and
maintain in a moist condition.
c.
Apply an asphalt membrane to the treated course, immediately after
same is completed. The quantity and type of asphalt approved for
use by the ENGINEER OWNER shall be sufficient to completely
cover and seal the total surface of the base between crown lines and
all voids. If the Contractor elects to use this method, it shall be the
responsibility of the contractor to protect the asphalt membrane
from being picked up by traffic by either sanding or dusting the
surface of same. The asphalt membrane may remain in place when
the proposed surface or other base courses are placed. Asphaltic
emulsions are not acceptable for the asphaltic membrane.
02340-5
Fly Ash Stabilization
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02340-6
Fly Ash Stabilization
SECTION 02360
EROSION AND SEDIMENT CONTROL
PART 1
1.01
1.02
SECTION INCLUDES
A.
This work shall consist of temporary measures needed to control erosion and water
pollution. These temporary measures shall include, but not be limited to, berms,
dikes, dams, sediment basins, fiber mats, netting, gravel, mulches, grasses, slope
drains and other erosion control devices or methods. These temporary measures shall
be installed at the locations where needed to control erosion and water pollution
during the construction of the project, and as directed by the ENGINEER OWNER,
and as shown on the Drawings.
B.
The Erosion Control Plan presented in the Drawings were reviewed and approved by
the OWNER and serves as a minimum for the requirements of erosion control during
construction. The CONTRACTOR has the ultimate responsibility for providing
adequate erosion control and water quality throughout the duration of the project.
Therefore, if the provided plan is not working sufficiently to protect the project areas,
then the CONTRACTOR shall provide additional measures as required to obtain the
required protection. The CONTRACTOR shall include in his bid price for erosion
control a minimum of all items shown on the Erosion Control Plan and any additional
items that may be needed to control erosion and water pollution.
SUBMITTALS
A.
Construction schedule for Erosion Control per subsection 3.01
B.
Sequencing Plan per subsection 3.12
PART 2
2.01
GENERAL
PRODUCTS
MATERIALS
A.
Materials may include hay bales, straw, fiber mats, fiber netting, wood cellulose,
fiber fabric, gravel and other suitable materials, and shall be reasonably clean, free of
deleterious materials, and certified weed free. All materials shall be submitted for
approval prior to installation.
B.
Temporary grass cover (if required) shall be a quick growing species suitable to the
area, which will provide temporary cover and will not later compete with the grasses
sown for permanent cover. All grass seed shall be approved by the ENGINEER
OWNER prior to installation.
C.
Fertilizer and soil conditioners shall be approved by the ENGINEER OWNER prior
to installation.
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02360-1
Erosion and Sediment Control
PART 3
3.01
3.02
EXECUTION
CONSTRUCTION REQUIREMENTS
A.
When so indicated in the Contract Documents, or when directed by the ENGINEER
OWNER, the CONTRACTOR shall prepare construction schedules for
accomplishing temporary erosion control work. These schedules shall be applicable
to clearing and grubbing, grading, structural work, construction, etc. He shall also
submit for acceptance his proposed method of erosion control on haul roads and
borrow pits and his plan for disposal of waste material. Work shall not be started
until the erosion control schedules and methods of operations have been accepted.
B.
The CONTRACTOR will be required to incorporate all permanent erosion control
features into the project at the earliest practicable time as outlined in his accepted
schedule. Temporary erosion control measures will then be used to correct
conditions that develop during construction.
C.
The erosion control features installed by the CONTRACTOR shall be adequately
maintained by him until the project is accepted.
D.
In the event of conflict between these requirements and erosion and pollution control
laws, rules, or regulations of other Federal, State or local agencies, the more
restrictive laws, rules, or regulations shall apply.
PERMITS AND COMPLIANCE
A.
If necessary, the CONTRACTOR must apply for and obtain a Construction
Dewatering Permit from the Colorado Department of Health. All costs for this
permit shall be the responsibility of the CONTRACTOR. This permit requires that
specific actions be performed at designated times. The CONTRACTOR is legally
obligated to comply with all terms and conditions of the permit including testing for
effluent limitations.
The CONTRACTOR shall also apply for and obtain a stormwater discharge permit
for construction activities, if applicable. The CONTRACTOR shall comply with and
pay for any and all requirements set forth in the permit.
The CONTRACTOR shall allow the Colorado Department of Health or other
representatives to enter the site to test for compliance with the permit. Non
compliance with the permit can result in stoppage of all work.
In addition to permit requirements, the OWNER shall also monitor the
CONTRACTOR’s erosion control and work methods. If the overall function and
intent of erosion control is not being met, then the OWNER shall require the
CONTRACTOR to provide additional measures as required to obtain the desired
results. Costs for any additional erosion control measures shall be the responsibility
of the CONTRACTOR, since he has the ultimate responsibility for providing
adequate erosion control and water quality for the duration of the project.
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02360-2
Erosion and Sediment Control
3.03
STABILIZATION OF DISTURBED AREAS
A.
3.04
PROTECTION OF ADJACENT PROPERTIES
A.
3.05
OF
SEDMENT
AND
EROSION
CONTROL
Sediment barriers, perimeter dikes, and other measures intended to either trap
sediment or prevent runoff from flowing over disturbed areas must be constructed as
a first step in grading and be made functional before land disturbance takes place.
Earthen structures such as dams, dikes, and diversions must be stabilized within 5
days of installation. Stormwater outlets must also be stabilized prior to any upstream
land disturbing activities.
All on-site stormwater conveyance channels used by the CONTRACTOR for
temporary erosion control purposes shall be designed and constructed with adequate
capacity and protection to prevent erosion during storm and runoff events.
Stabilization adequate to prevent erosion shall also be provided at the outlets of all
pipes and channels.
STORM SEWER INLET PROTECTION
A.
3.08
STABILIZATION
STABILIZATION OF WATERWAYS AND OUTLETS
A.
3.07
Properties adjacent to the site of a land disturbance shall be protected from sediment
deposition. In addition to the erosion control measures required on the Drawings,
perimeter controls may be required if damage to adjacent properties is likely.
Perimeter controls include, but are not limited to, a vegetated buffer strip around the
lower perimeter of the land disturbance, sediment barriers such as straw bales and silt
fences; sediment basins; or a combination of such measures. Vegetated buffer strips
may be used only where runoff in sheet flow is expected and should be at least 20
feet in width.
TIMING AND
MEASURES
A.
3.06
Temporary sediment control measures shall be established within 5 days from time of
exposure/disturbance. Permanent erosion protection measures shall be established
within 5 days after final grading of areas.
All storm sewer inlets which are made operable during construction or which drain
stormwater runoff from a construction site shall be protected from sediment
deposition by the use of filters.
WORKING IN OR CROSSING WATERCOURSES AND WETLANDS
A.
Construction vehicles should be kept out of watercourses to the extent possible.
Where in-channel work is necessary, precautions must be taken to stabilize the work
area during construction to minimize erosion. The channel (including bed and banks)
must always be restabilized immediately after in-channel work is completed.
B.
Where a live (wet) watercourse must be crossed by construction vehicles during
construction, a Temporary Stream Crossing must be provided for this purpose.
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02360-3
Erosion and Sediment Control
3.09
CONSTRUCTION ACCESS ROUTES
A.
3.10
DISPOSITION OF TEMPORARY MEASURES
A.
3.11
At the time specified in the Contract Documents, and subject to compliance with
specified materials and installation requirements, the CONTRACTOR will receive a
Substantial Completion Certificate for temporary erosion control measures.
MAINTENANCE OF EROSION CONTROL MEASURES AFTER SUBSTANTIAL
COMPLETION
A.
3.15
The CONTRACTOR shall submit a sequencing plan for approval for erosion control
in conformance with his overall Construction Plan for approval by the OWNER.
Changes to the Erosion Control Sequencing Plan may be considered by the OWNER
only if presented in writing by the CONTRACTOR.
SUBSTANTIAL COMPLETION OF EROSION CONTROL MEASURES
A.
3.14
All temporary and permanent erosion and sediment control practices must be
maintained and repaired as needed to assure continued performance of their intended
function.
SEQUENCING
A.
3.13
All temporary erosion and sediment control measures shall be disposed of within 30
days after final site stabilization is achieved or after the temporary measures are no
longer needed as determined by the OWNER. Trapped sediment and other disturbed
soil areas resulting from the disposition of temporary measures shall be permanently
stabilized to prevent further erosion.
MAINTENANCE
A.
3.12
Wherever construction vehicles enter or leave a construction site, a Stabilized
Construction Entrance is required. Where sediment is transported onto a public road
surface, the roads shall be cleaned thoroughly at the end of each day. Sediment shall
be removed from roads by shoveling or sweeping and be transported to a sediment
controlled disposal area. Street washing shall be allowed only after sediment is
removed in this manner.
The CONTRACTOR will be responsible for maintaining temporary erosion control
measures as specified in the Drawings and Contract Documents until such time as the
disturbed drainage area has stabilized as determined by the ENGINEER and the
OWNER.
FINAL COMPLETION AND ACCEPTANCE OF EROSION CONTROL MEASURES
A.
After the ENGINEER OWNER has determined that the drainage area has stabilized,
the CONTRACTOR shall remove all remaining temporary erosion control measures.
Any damage to the site shall be repaired to the satisfaction of the ENGINEER
OWNER and at no cost to the OWNER.
END OF SECTION
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02360-4
Erosion and Sediment Control
SECTION 02710
AGGREGATE BASE COURSE
PART 1
1.01
GENERAL
SECTION INCLUDES
A.
1.02
The worked to be performed includes the preparation of the aggregate base
course foundation; the production, stockpiling, hauling, placing and compacting
aggregate base course.
RELATED SECTIONS
A.
1.04
Section 02315 – Excavation and Embankment
SUBMITTALS
A.
PART 2
2.01
The CONTRACTOR shall cooperate with the ENGINEER in obtaining and
providing samples of all specified materials. The CONTRACTOR shall submit
certified laboratory test certificates for all items required in this section.
PRODUCTS
MATERIALS
A.
Aggregates: Aggregates for bases shall be crushed stone, crushed slag, crushed
gravel or natural gravel that conforms to the quality requirements of AASHTO M
147 except that the requirements for the ratio for the minus No. 200 sieve
fraction to the minus No. 40 sieve fraction shall not apply. The requirements for
the Los Angeles wear test shall not apply to Class 1, 2 and 3. Aggregates for
bases shall meet the grading requirements as called out in the Drawings. The
liquid limit shall be as shown in the table and the plasticity index shall be ≤ 6.
B.
Gradations:
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02710-1
Aggregate Base Course
Sieve
Designation
4 inch
3 inch
2 1/2 inch
2 inch
1 1/2 inch
Note:
2.02
Percentage by Weight Passing Square Mesh Sieves
LL < 35
Class 1 Class 2 Class 3
--100
----95 --100
100
----95 ----100
-------
1 inch
---
---
---
3/4 inch
No. 4
No. 8
No. 200
--30 - 65
--3 - 15
------3 - 15
------20
max.
Class 4
-----
LL < 30
Class 5 Class 6
---------
100
100
-----
-----
-----
90 100
---
100
---
---
95 100
--30 - 70
--3 - 15
---
100
100
30 - 65
25 - 55
3 - 12
----20 - 85
5 – 15
50 - 90
30 - 50
--3 - 12
Class 3 materials shall consist of bank or pit run material.
EQUIPMENT
A.
General: Equipment shall be capable of legally performing the work as described
in this Specification. Equipment that is inadequate to obtain the results specified
shall be replaced or supplemented as required to meet the requirements of this
Specification. Any equipment that is used in an improper manner may be cause
for rejection of the work if in the opinion of the ENGINEER the work fails to
meet the requirements of this specification.
Equipment used for compaction shall be the rolling type, vibratory type, or
combination of both types, and shall be of sufficient capacity to meet the
compaction requirements herein.
PART 3
3.01
EXECUTION
PREPARATION OF FOUNDATION
A.
The foundation shall be considered to be the finished earth subgrade, subbase
course, or base course, as the case may be, upon which any subbase, base or
surface course is to be constructed.
Preparation of foundation for construction of a subbase, base, or surface course
shall consist of the work necessary to restore, correct, strengthen or prepare the
foundation to a condition suitable for applying and supporting the intended
course.
For aggregate base course roads and parking areas, the top six-inches of topsoil
shall be stripped within the area to be aggregate surfaced. Following stripping of
the topsoil, the upper 12 inches of the subgrade shall be scarified and compacted
to a minimum of 95% of the Maximum Standard Proctor Density (ASTM D698).
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02710-2
Class 7
-----
Aggregate Base Course
On-site material may be used as accepted by the ENGINEER, for compacted fill
for the aggregate base course. Fill shall be placed within 2% of optimum
moisture content and compacted to a minimum of 95% of the Maximum
Standard Proctor Density (ASTM D698).
Aggregate base course used as a foundation for pavements shall be placed on the
subgrade within two percent of optimum moisture and compacted to a minimum
of 95% of the Maximum Standard Proctor Density (ASTM D698). The top six
inches of topsoil shall be stripped within the area to be aggregate surfaced.
Following stripping of the topsoil, the upper 12 inches of the subgrade shall be
scarified and compacted to a minimum of 95% of the Maximum Standard Proctor
Density (ASTM D698). On-site material may be used, as accepted by the
ENGINEER, for compacted fill for the aggregate base course. Fill shall be
placed within 2% of optimum moisture content and compacted to a minimum of
95% of the Maximum Standard Proctor Density (ASTM D698). Deviations in
aggregate base course under pavements of more than 1/4 inch in 10 feet,
measured with a 10-foot straight edge, shall be corrected prior to pavement
construction.
The foundation shall be prepared and constructed such that it will have a uniform
density throughout. It shall be brought to the required alignment and cross
section with equipment and methods adapted for the purpose. Upon completion
of the shaping and compacting operations, the foundation shall be smooth, at the
required density, and at the proper elevation and contour to receive the aggregate
base course.
After the specified compaction has been obtained, the subgrade under the curb,
gutter, sidewalk and pavement shall be proof-rolled with a heavily loaded rubber
tire roller, fully loaded water truck, or other approved equipment. Those areas
which produce a rut depth of over ½ inch or which crack the subgrade after
pumping and rebounding shall be ripped, scarified, wetted or dried if necessary,
and recompacted to the requirements for density and moisture at the
CONTRACTOR’S expense. Where unsuitable material is encountered, the
ENGINEER may require the CONTRACTOR to remove the unsuitable materials
and backfill to the finished grade with approved material. The completed
subgrade shall be proof-rolled again after placement of approved material.
Unless otherwise provided, all holes, ruts and other depressions in the foundation
shall be filled with materials similar to those existing in the foundation. High
places shall be excavated and removed to the required lines, grade and section.
Base course material shall not be placed on a foundation that is soft, spongy, or
one that is covered by ice or snow. Base course shall not be placed on a dry or
dusty foundation where the existing condition would cause rapid dissipation of
moisture from the base course material and hinder or preclude its proper
compaction. Dry foundations shall have water applied and reworked and
compacted as necessary.
The ENGINEER shall direct the CONTRACTOR to make minor adjustments in
the finish grade from that shown in the Drawings as may be necessary or
desirable to maintain the characteristics of a stabilized foundation by minimizing
the amount of cutting into or filling.
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02710-3
Aggregate Base Course
3.02
EARTH SUBGRADE
A.
3.03
When the foundation is an earth subgrade it shall be prepared by removing all
vegetation, excavating and removing materials, filling depressions, scarifying,
shaping, smoothing and compacting to meet the required grade, section and
density. Stones over six inches in greatest dimension shall be removed.
PLACEMENT
A.
The aggregate base course shall be constructed to the width and section shown in
the Drawings. If the required compacted depth of base coarse exceeds six inches,
the base shall be constructed in two or more layers of approximate equal
thickness. The maximum compacted thickness of any one layer shall not exceed
six inches.
Each layer shall be constructed as far in advance of the succeeding layer as the
ENGINEER may direct. The work shall, in general, proceed from the point on
the project nearest the point of supply of the aggregate in order that the hauling
equipment may travel over the previously placed material, and the hauling
equipment shall be routed as uniformly as possible over all portions of the
previously constructed courses or layers of the base course.
The material shall be deposited on the soil foundation, or previously placed layer
in a manner to minimize segregation and to facilitate spreading to a uniform layer
of the required section. In the event that blending of materials is necessary to
provide required gradation and properties of the material, and is done in the
roadway, the same shall be accomplished by mixing the aggregate and blending
material by means of blade graders, discs, harrows or other equipment to effect a
uniform distribution and gradation throughout the finished mixture. Excessive
mixing and grading that will cause segregation between the coarse and fine
materials is prohibited.
3.04
COMPACTION
A.
After a layer or course has been placed and spread to the required thickness,
width and contour, it shall be compacted. If the material is too dry to readily
attain the required density, it shall be uniformly moistened to the degree
necessary during compaction operations for proper compaction.
B.
Compaction of each layer shall continue until the required density of Section
3.01 is reached. The surface of each layer shall be maintained during compaction
operations in such a manner that a uniform texture is produced and aggregates
firmly keyed.
All areas where proper compaction is not obtainable due to segregation of
materials, excess fines, or other deficiencies in the aggregate, shall be reworked
as necessary or the material removed and replaced with aggregates that will meet
this specification.
The surface of each layer shall be kept true and smooth at all times.
3.05
MIXING
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02710-4
Aggregate Base Course
A.
General: Unless otherwise specified, the CONTRACTOR shall mix the
aggregate by any one of the three following methods.
1.
Stationary Plant Method:
Aggregate base course and water shall be mixed in an approved mixer.
After mixing the aggregate shall be transported to the project site while it
contains the proper moisture content and shall be placed on the roadbed
by means of an approved spreader.
2.
Travel Plant Method
After the material for each layer has been placed through an aggregate
spreader or windrow sizing device, it shall be uniformly mixed by a
traveling mixing plant.
3.
Road Mix Method
After material for each layer has been placed, the materials shall be
mixed while at an optimum moisture content by motor graders or other
approved equipment until the mixture is uniform throughout.
3.06
SHOULDER CONSTRUCTION
A.
Shoulders shall be constructed with base course material to conform to the
elevation and section shown in the Drawings. No equipment shall be used which
by its design or through its manner of operation that will damage the pavement or
curbs. Insofar as practicable, the base course material shall be placed directly on
the shoulder area. Materials that are deposited outside the shoulder area, if not
contaminated, shall be recovered and placed within the required limits. The
CONTRACTOR will not be compensated for materials not recovered as
determined by the ENGINEER.
Materials shall not be deposited on the pavement or surfacing during placing
unless specifically permitted by the ENGINEER.
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02710-5
Aggregate Base Course
The base course material as placed shall be spread and compacted to the required
density in layers not exceeding six inches in compacted thickness. Any material
inadvertently placed on the pavement shall be broomed from the pavement. The
result shall not effect a change in the gradation of the shoulder material.
END OF SECTION
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02710-6
Aggregate Base Course
SECTION 02740
ASPHALT PAVEMENT
PART 1
1.01
SECTION INCLUDES
A.
1.02
Section 02340 – Fly Ash Stabilization
QUALITY ASSURANCE
A.
Test samples will be taken in the field by the OWNER’s independent testing
service. Mix designs and material samples are to be submitted for review at least
4 weeks prior to material placement. All sampling and testing shall be done in
accordance with the latest methods of AASHTO, unless otherwise specified.
B.
When placing the asphalt trench patch, saw cutting of the existing asphalt will
not be permitted within the wheel path of a travel lane. All asphalt patches shall
conform to the specifications outlined in the City of Fort Collins Design and
Construction Standards for Streets of Public Right-of-way, “Construction
Details” section.
PART 2
2.01
This section covers paving of all new and existing asphalt surfaces. Existing
pavement is to be replaced with similar material as herein set forth.
RELATED SECTIONS
A.
1.03
GENERAL
PRODUCTS
MATERIALS
A.
Cationic Emulsified Asphalt: The cationic emulsified asphalt for the tack coat
shall be CSS-1h and shall meet the requirements of AASHTO M 208 (ASTM C
2397).
B.
Aggregate for Hot Plant Mix Bituminous Pavement:
1.
Description – The asphaltic concrete surface shall consist of a mineral
aggregate, uniformly mixed with asphalt cement.
2.
Materials:
a.
Crushed Gravel: The crushed gravel shall consist of clean, hard,
durable particles which have been crushed to the gradations
shown in Table 1 (in accordance with the Colorado Department
of Transportation Standard Specifications for Road and Bridge
Construction).
Aggregates for hot plant mix bituminous pavement shall be of uniform quality,
composed of clean, hard, durable particles of crushed stone, crushed gravel,
natural gravel, or crushed slag. Excess of fine material shall be wasted before
crushing. For Gradings S, SX, and SG, a percentage of the aggregate retained on
the 4.75 mm. (No. 4) sieve shall have at least two mechanically induced fractured
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faces when tested in accordance with Colorado Procedure 45. This percentage
will be provided by the ENGINEER OWNER. The angularity of the fine
aggregate shall be a minimum of 45.0% when determined according to CP
L-5113, Method A. Aggregate samples representing each aggregate stockpile
shall be non-plastic if the percent of aggregate passing the Number 4 sieve is
greater than or equal to 10 percent by weight of the individual aggregate sample.
Plasticity will be determined in accordance with AASHTO 90.
Reclaimed material shall be of uniform quality. The maximum size of the
reclaimed asphalt pavement shall be 38 mm (1 1/2 inches) prior to introduction
into the mixer. The maximum aggregate size contained in the combination of
reclaimed asphalt pavement and new aggregate shall not exceed the maximum
specified in Table 1. The hot bituminous pavement shall not contain more than
15 percent reclaimed asphalt pavement.
The material shall not contain clay balls, vegetable matter, or other deleterious
substances. The aggregate for Gradings S, SX, and SG shall have a percentage
of wear of 45 or less when tested in accordance with AASHTO T 96.
TABLE 1
MASTER RANGE TABLE FOR
HOT BITUMINOUS PAVEMENT
Sieve Size
Percent by Weight Passing Square Mesh Sieves
Grading S
Grading SG
Grading SX
100
100
90 – 100
90 – 100
100
*
*
90 – 100
*
*
*
*
*
*
23 – 49
19 – 45
28 – 58
37.5 mm (1 1/2”)
25.0 mm (1”)
19.0 mm (3/4”)
12.5 mm (1/2”)
9.5 mm (3/8”)
4.75 mm (#4)
2.36 mm (#8)
1.18 mm (#16)
*
*
*
600 μm (#30)
300 μm (#50)
150 μm (#100)
2–8
1–7
2 –10
75 μm (#200)
* These additional Form 43 Screens will initially be established for the
Contractor’s Quality Control Testing using values from the As Used
Gradation shown on the Design Mix.
The crushed gravel shall show no detrimental amount of stripping when tested as
follows:
A test sample consisting of the aggregate and bitumen to be used in the paving
mixture shall be mixed at the temperature specified herein. The sample shall
then be spread in a loose, thin layer and allowed to air-season for 24 hours before
testing. A portion of the sample, not over ½ of the capacity of the
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jar, shall be placed in a glass jar and completely covered with distilled water.
The jar shall be fitted with a tight screw cap and allowed to stand for a period of
24 hours. The jar shall be vigorously shaken for a period of 15 minutes and the
sample of the mixture shall then be examined for stripping. If stripping occurs,
the aggregate shall be rejected or an approved method of treating shall be
specified to change the material from a hydrophilic to a hydrophobic state as
directed by the ENGINEER OWNER.
Superpave Performance Graded Binders. Superpave Performance Graded
Binders shall conform to the requirements listed in Table 2. The oil to be used
shall be Performance Graded Binder 64-22.
TABLE 2
SUPERPAVE PERFORMANCE GRADED BINDERS
Requirement for PG Binder
58-22
58-28
58-34
64-22
64-28
70-28
76-28
AASHTO
Test No.
230
230
230
230
230
230
230
T 28
3
3
3
3
3
3
3
TP 48
58
58
58
64
64
70
76
TP 5
-
-
-
-
50
-
-
T 51
Toughness, joules (inch-lbs)
-
-
-
-
-
-
Tenacity, joules (inch-lbs)
-
-
-
-
-
-
*CP L2210
*CP L2210
T 240
1.00
1.00
1.00
1.00
1.00
1.00
1.00
T 240
58
58
58
64
64
70
76
TP 5
-
-
-
-
-
50
50
*CP L2211
Method A
-
-
-
-
20***
-
-
T 51
Property
Original Binder Properties
Flash Point Temp., °C, minimum
Viscosity at 135 °C, Pa●s, maximum
Dynamic Shear, Temp. °C, where
G*/Sin δ @ 10 rad/s ≥ 1.00 kPa
Ductility, 4 °C (5 cm/min.), cm
minimum
12.4
(110)
8.5
(75)
RTFO Residue Properties
Mass Loss, percent maximum
Dynamic Shear, Temp. °C, where
G*/Sin δ @ 10 rad/s ≥ 2.20 kPa
Elastic Recovery, 25 °C, percent min.
Ductility, 4 °C (5 cm/min.), cm
minimum
PAV Residue Properties, Aging
Temperature 100 °C
Dynamic Shear, Temp. °C, where
G*●Sin δ @ 10 rad/s ≤ 5000 kPa
Creep Stiffness, @ 60 s, Test
Temperature in °C
S, maximum, MPa
m-value, minimum
**Direct Tension, Temperature in °C,
@ 1 mm/min., where failure strain ≥
1.0 %
PP 1
22
19
16
25
22
25
28
TP 5
-12
-18
-24
-12
-18
-18
-18
300
300
300
300
300
300
300
TP 1
0.300
0.300
0.300
0.300
0.300
0.300
0.300
TP 1
-12
-18
-24
-12
-18
-18
-18
TP 3
*Colorado Procedure
**Direct tension measurements are required when needed to show conformance to AASHTO MP 1.
***If the PG 64-28 RTFO residue fails the ductility test, the binder will be accepted if the TFO residue (AASHTO T 179) has a
ductility of 25 cm or more.
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2.02
PAVING PLANT REQUIREMENT
A.
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General Requirements:
1.
Uniformity: The plants shall be so designed, coordinated and operated as
to produce a mixture within the job mix tolerances as covered in
paragraph 2.03C under “Preparation and Composition of the Mixture.”
2.
Equipment for Preparation of Asphalt: Tanks for storage of asphalt shall
be capable of heating the material, under effective and positive control at
all times, to temperature requirements set forth in the Specifications.
Heating shall be accomplished by steam coils, electricity, or other means
such that no flame shall come in contact with the heating tank. A
circulating system for the asphalt shall be provided of adequate size to
ensure the property and continuous circulation between storage tank and
mixer during the entire operating period. All pipelines and fittings shall
be steam jacketed or other properly insulated to prevent heat loss.
Storage tank capacity shall be sufficient for at least one day’s run.
3.
Dryer: A rotary dryer of any satisfactory design for drying and heating
the mineral aggregates shall be provided. The dryer shall be capable of
drying and heating the mineral aggregate to the temperature requirements
set forth in the Specifications.
4.
Screens: Plant screens, capable of screening all aggregates to the size
required for proportioning, and having normal capacities slightly in
excess of the full capacity of the mixer, shall be provided. The mesh of
the screens shall be approved by the ENGINEER OWNER before paving
operations.
5.
Bins: The plant shall include a minimum of 3 dry aggregate storage bins
with the total capacity of not less than 3 times the dead load capacity of
the mixer. Each bin shall be provided with an overflow pipe that shall be
of such size and at such locations as to prevent any backing up of
material into other bins. Each bin shall have a suitable convenient means
for sampling. The sampling openings shall be subject to the approval of
the ENGINEER OWNER.
6.
Thermometric Equipment: An armored thermometer reading from 200F
to 500F shall be fixed in the asphalt feed line at a suitable location from
the discharge valve at the mixer unit. The plant shall be further equipped
with an approved dial scale mercury actuated thermometer, an electric
pyrometer, or other approved thermometric instrument so placed at the
discharge chute of the dryer as to register automatically or indicate the
temperature of the heated aggregate.
7.
Dust Collectors: When plants are located in any vicinity where dust may
be objectionable, or when dust interferes with the efficient operation of
the plant, proper housing, mixer covers, dust collecting systems shall be
installed. Provision shall be made to waste the material so collected or to
return it uniformly to the mixture as the ENGINEER OWNER may
direct.
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8.
B.
Safety Equipment: Adequate and safe stairways to the mixer platform
and guarded ladders to other plant units shall be placed at all points
required for accessibility to all plant operations. All gears, pulleys,
chains, sprockets, and other dangerous moving parts shall be thoroughly
guarded and protected. Ample and unobstructed passage shall be
maintained at all times in and around the truck loading space. This space
shall be kept free from drippings from the mixing platform.
Special Requirements of Batch Plants:
1.
Plant Scale: Scales for any weight box or hopper may be either of the
beam or springless dial type and shall be a standard make and design,
sensitive to ½ of 1% of the maximum load that may be required. When
of the beam type, there shall be a separate beam with telltale indicator for
each size aggregate and a tare beam for balancing the hopper.
2.
Control of Mixing Time: The plant shall be equipped with an approved
means to govern the time of mixing and to maintain it.
3.
Weight Box or Hopper: The equipment shall include a means for
accurately weighing each bin size to hold a full batch without hand
raking or running over. The weight box or hopper shall be supported on
fulcrums and knife edges so constructed that they will not be easily
thrown out of alignment or adjustment. Gates on both bins and hopper
shall be so constructed as to prevent leakage when they are closed.
4.
Asphalt Bucket: The asphalt bucket which is used for weighing the
asphalt cement shall have sufficient capacity to hold not less than 10% of
the weight of aggregate required for one batch. It shall be steam jacketed
or equipped with properly insulated electric heat units and shall be
suspended on dial scales or beam scales equipped with a telltale indicator
so that the tare weight of asphalt cement can be measured accurately to
within 2% above or below the weight required. The bucket shall be so
arranged that it will deliver the molten asphalt cement in a thin uniform
sheet or in multiple streams the full width of the mixer.
5.
Mixer Unit: The plant shall include a batch mixer of an approved twin
pugmill type or rotary drum type and shall be capable of producing a
uniform mixture within the job mix tolerances fixed by these
Specifications. It shall have a batch capacity of not less than 2,000
pounds.
If of the pugmill type, worn or improper pugmill paddles will not be
permitted. A mechanical batch counter shall be installed and shall be so
designed as to register upon only the actuation of the asphalt bucket
release and to preclude the register of any material through the operation
of pulling bins.
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C.
Special Requirements for Continuous Mixing Plants:
1.
Gradation Control Unit: The plant shall include a means of accurately
proportioning each bin size of aggregate either by weighing or by
volumetric measurement. When gradation control is by volume, the unit
shall have an accurately controlled individual gate to form an orifice for
volumetrically measuring the material drawn from each respective bin
compartment. Indicators shall be provided on each gate to show the gate
opening in inches.
2.
Weight Calibration or Aggregate Feed: The plant shall include a means
for calibration of gate openings by means of weight test samples. The
materials fed out of the bins through individual orifices shall be bypassed
to a suitable test box, each compartment material confined in a separate
box section. The plant shall be equipped to handle conveniently such
test samples weighting up to 800 pounds and to weigh them on accurate
scales.
3.
Synchronization of Aggregate and Asphalt Feed: Satisfactory means
shall be provided to afford positive interlocking control between the flow
of aggregate from the bins and the flow of asphalt from the meter or
other proportioning sources. This control shall be accomplished by
interlocking mechanical means or any positive method under the control
of the ENGINEER OWNER.
4.
Mixer Unit for Continuous Method: The plant shall include a continuous
mixer of an approved twin pugmill type, and shall be capable of
producing a uniform mixture within the job mix tolerance fixed by these
Specifications. The paddles shall be of a type adjustable for angular
position on the shafts and reversible to retard the flow of the mix. The
mixer shall carry a manufacturer’s plate giving the net volumetric
contents of the mixer at the several heights inscribed on a permanent
gauge and also giving the rate of feed of aggregate per minute at plant
operating speed.
Unless otherwise required, determination of mixing time shall be by
weight methods under the following formula. The weights shall be
determined for the job by tests made by the ENGINEER OWNER.
Mixing time in seconds = Pugmill dead capacity in pounds
Pugmill output in pounds/seconds
The mixing time shall be approved by the ENGINEER OWNER.
2.03
PREPARATION OF MATERIAL
A.
Preparation of Asphalt Cement: The asphalt cement shall be heated at the paving
plant to a temperature not exceeding 325F. The penetration of the asphalt cement
shall be maintained within the limits of penetration specified through the period
of use.
B.
Preparation of Mineral Aggregates: The mineral aggregates shall be dried and
heated at the paving plant so that when delivered to the mixer, they shall be at as
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low a temperature as is consistent with proper mixing and laying, and in no case
to exceed 350F. They may be fed simultaneously into the same drier but in all
cases, immediately after heating, they shall be screened into three or more bins.
The screen sizes shall be approved by the ENGINEER OWNER prior to the start
of construction.
C.
Preparation and Composition of the Mixture: Each size of hot aggregate, the
mineral filler and the asphalt cement shall be measured separately and accurately
to the proportions in which they are to be mixed. After the hot aggregate and
mineral filler have been charged into the mixer and thoroughly mixed as directed
by the ENGINEER OWNER, the asphalt cement shall be added and the mixing
continued for a period of at least 20 seconds, or longer if necessary, to produce a
homogeneous mixture, in which all particles of the mineral aggregates are coated
uniformly.
The constituents of the surface course shall be combined in such proportions to
produce a mixture conforming to the gradations shown in Table 1.
All mix furnished for the project shall conform to within the range of tolerances
shown in Table 3.
TABLE 3
MIX TOLERANCES
Bitumen Content
Asphalt Recycling Agent
Temperature of Mixture When Discharged from Mixer
±0.3%
±0.2%
±10°C
1
Hot Bituminous Pavement
Passing the 9.5 mm (3/8 inch) and larger sievers
±6%
2
Passing the 4.75 mm (No. 4 and 2.36 mm (No. 8 sieves)
±5%
2
Passing the 600 μm (No. 30) sieve
±4%
2
Passing the 75 μm (No. 200) sieve
±2%
1
When 100% passing is designated, there shall be no tolerance. When
90-100% passing is designated, 90% shall be the minimum; no tolerance
shall be used.
2
These tolerances apply to the Contractor’s Quality Control Testing.
2
Superpave Performance Graded Binders shall conform to the requirements listed
in Table 4 at 75 gyrations.
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TABLE 4
MIX DESIGN CRITERIA AT OPTIMUM OIL
Property
Asphalt Content (%)
Voids @ N (INI)
Voids @ N (DES)
Voids @ N (MAX)
V.M.A. (%)
% Voids Filled
Tensile Strength Retention
Dry Tensile Strength (psi)
Mixing Temperature
Compaction Temperature
D.
PART 3
3.01
3.02
Specification
+/-0.3%
11 Min.
3%-5%
2 Min.
14 Min.
65%-78%
80 Min.
30 Min.
325 Deg. F
300 Deg. F
Paving Plant Inspection: For the verification of weights or proportions and
character of materials and determination of temperatures used in the preparation
of the mixture, the ENGINEER OWNER or his authorized representative shall
have access at any time to all parts of the paving plant.
EXECUTION
SURFACE PREPARATION
A.
All final pavement cuts shall be made in straight lines using saw cut. Initial
pavement cuts may be made using wheel cut or other suitable method.
B.
Prior to placing the prime coat, the base course shall be thoroughly cleaned.
Loose material shall be removed from the existing surface as directed by the
ENGINEER OWNER.
PRIME COAT
A.
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All previously prepared bases or existing surface shall be primed with a cationic
emulsified asphalt in accordance with the requirements of these Specifications,
and at the locations that are shown on the Plans or as directed by the ENGINEER
OWNER. The prime coat shall be placed by means of an approved pressure
distributor. Before application, the asphaltic oil shall be heated as directed by the
ENGINEER OWNER. However, it shall not be heated to more than 180F. In
general, the rate of application shall be from 0.25 to 0.35 gallons per square yard
as directed by the ENGINEER OWNER. The prime coat shall be carefully
applied, particularly around curbs and sidewalks. If excessive amounts of curb,
sidewalks, or other structures are sprayed with asphaltic oil, they shall be cleaned
as directed by the ENGINEER OWNER at the CONTRACTOR’s expense. All
vertical contact faces shall be primed by painting with cationic emulsified
asphaltic oil.
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Asphalt Pavement
3.03
ASPHALTIC CONCRETE SURFACE
A.
Transportation of Mixture: The mixture shall be transported from the paving
plant to the work in vehicles equipped with tight metal compartments previously
cleaned of all foreign materials. When directed by the ENGINEER OWNER, the
compartments shall be sufficiently insulated and each load shall be covered with
canvas or other suitable materials of sufficient size to protect it from weather
conditions. The inside surface of all vehicle compartments used for hauling
mixture must be lightly lubricated with a tin oil or soap solution just before
loading, but excess lubricant will not be permitted. No load shall be sent out so
late in the day as to interfere with spreading and compacting the mixture during
daylight unless artificial light, satisfactory to the ENGINEER, is provided.
B.
General Conditions:
The mixture shall be laid only when the base is dry and
only when weather conditions are suitable. The mixture shall be laid when
atmospheric temperatures are consistent with the placement temperature
limitations as outlined in Table 5. Asphalt shall not be placed when frost exists
in the subgrade. Any material laid shall be rolled with pneumatic rollers in
addition to the specified rolling, as directed by the ENGINEER OWNER.
C.
Placing Asphalt Mixture: If traffic is allowed to use the prepared subgrade or
sub-base, the subgrade or sub-base shall be checked and corrected as needed
immediately ahead of placing bituminous materials. Prior to placement of the
bituminous surface, the base shall be cleaned of all dirt or other foreign matter.
When the new pavement abuts the old pavement, the Contractor shall cut the old
pavement as directed by the Engineer and paint the edge of the pavement with a
tack coat.
TABLE 5
PLACEMENT TEMPERATURE LIMITATIONS
Compacted
Layer
Thickness, in
mm (inches)
Minimum Air and Surface Temperature, °C(°F)
Top Layer of Payment
Note (1)
15 (60)
10 (50)
Note (2)
20 (70)
15 (60)
Layers Below Top Layer
Note (1)
10 (50)
5 (40)
Note (2)
15 (60)
10 (50)
25(1) or less
>25 to 75
(1 to 3)
>75 (3)
--0 (30)
5 (40)
Notes: Air Temperature is taken in the shade. Surface is defined as the existing base
on which the new pavement is to be placed.
(1)
Temperatures to be used when mix contains unmodified asphalt cement (PG 5828, PG 58-22, PG 64-22). Temperatures to be used with PG 76-28, PG 70-34,
PG 64-28 and Pg 58-40.
(2)
Temperature to be used when mix contains AC-20R [AC-20 (Rubberized)].
The asphaltic pavement shall be placed only when the base is stable and weather
conditions are suitable. The asphaltic pavement shall have a density of ninetytwo percent (92%) to ninety-six percent (96%) of the maximum theoretical
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density, determined according to Colorado Procedure 51. Field density
determinations will be made in accordance with Colorado Procedure 44 or 81.
While the surface is being compacted and finished, the Contractor shall carefully
trim the outside edges of the pavement to the proper alignment.
Unless otherwise permitted by the ENGINEER OWNER, the mixture shall be
spread by means of a mechanical self-powered paver, capable of spreading the
mixture true to the line, grade, and crown set by the ENGINEER OWNER.
Pavers shall be equipped with hoppers and distributing screws of the reversing
type to place the mixture evenly in front of adjustable screeds. The mixture shall
be dumped in the center of the hoppers and care exercised to avoid overloading
and spilling over of the mixture upon the base. Pavers shall operate when laying
mixtures at such speed between 10 feet and 20 feet per minute, as may be
decided by the ENGINEER OWNER.
Pavers shall be equipped with a quick and efficient steering device and shall have
forward and reverse speeds of not less than 100 feet per minute.
Unless operating on fixed side forms, pavers shall employ mechanical devices
such as equalizing runners, straightedge runners, evener arms, or other
compensating devices to adjust the grade and confine the edges of the mixture to
true lines within the use of stationary side forms. The pavers shall be capable of
spreading the mixtures, without segregation, in thickness of from ½ inch to 3
inches, to a maximum width of 10 feet in increments of 1 foot or less and to a
minimum width of 8 feet. They shall be equipped with blending or joint leveling
devices for smoothing and adjusting all longitudinal joints between adjacent
strips of courses of the same thickness.
When asphalt concrete pavement thickness in excess of 2 inches is called for,
they shall be laid in separate courses of not less than 1 inch or more than 2 inches
or as directed by the ENGINEER OWNER.
The term “screed” includes a “strike-off” device operating by cutting, crawling,
or other practical action which is effective on the mixture at a workable
temperature without tearing, shoving, or gouging and which produces a finished
surface of the evenness and texture specified. The screed shall be adjustable as
to level and shall have an indicating level attached. Longitudinal and transverse
joints shall be made in a careful manner. Well bonded and sealed joints are
required. If necessary to obtain this result, joints shall be painted with cationic
emulsified asphaltic cement.
In making the joint along any adjoining edges such as curb, gutter, or an
adjoining pavement and after the hot mixture is placed by the finished machine,
just enough of the hot material shall be carried back to fill any space left open.
This joint shall be properly “set” up with the back of rake at proper height and
level to receive the maximum compression under rolling. The work of “setting
up” this joint shall be performed always by competent workmen who are capable
of making correct, clean, and neat joints.
Immediately after any course is screeded, and before roller compaction is started,
the surface shall be checked, any inequalities adjusted, all fat, sandy
accumulations from the screed removed by a rake or hoe, and all fat spots in any
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Asphalt Pavement
course removed and replaced with satisfactory material. Irregularities in
alignment and grade along the outside edge shall also be corrected by the
addition or removal of mixture before the edge is rolled.
In narrow, deep, or irregular sections, intersections, turnouts, or driveways where
it is impractical to spread and finish the mixtures by machine methods, the
CONTRACTOR may used approved spreading equipment or acceptable hand
methods as directed by the ENGINEER OWNER.
When the mixture is to be spread by hand, upon arrival on the work it shall be
dumped upon a steel dump board outside the area on which it is to be spread.
Immediately thereafter it shall be distributed into place by means of hot shovels
and spread with hot rakes in a loose layer of uniform density and correct depth.
Tines of the rakes shall not be less than ½ inch longer than the loose depth of the
mixture, and spaces between tines shall not be less than the maximum diameter
of aggregate particle except that in no case should the spaces be less than 1 inch.
Loads shall not be dumped any faster than can be properly handled by the
shovelers.
The shovelers shall not distribute the dumped load faster than it can be properly
handled by the rakers.
The rakers will not be permitted to stand in the hot mixture while raking it,
except where necessary to correct errors in the first raking. The raking must be
carefully and skillfully done in such a manner that after the first passage of the
roller over the raked mixture, a minimum amount of back patching will be
required.
Placing mixtures shall be as continuous as possible and the roller shall pass over
the unprotected edge of the freshly laid mixture only when the laying of this
course is to be discontinued for such intervals of time as to permit the mixture to
become chilled.
D.
Joints: Joints between old and new pavements, or between successive days’
work, shall be carefully made in such a manner as to insure a thorough and
continuous bond between the old and new surfaces. The edge of the previously
laid course shall be cut back to its full depth so as to expose a fresh surface, after
which the hot surface mixture shall be placed in contact with it and raked to a
proper depth and grade. Hot smoothers or tampers shall be carefully used in such
a manner as to heat up the old pavement sufficiently (without burning it) to
insure a proper bond. Before placing mixture against them, all contact surfaces
of curbs, gutters, headers, manholes, etc., shall be painted with a thin uniform
coating of cationic emulsified asphaltic cement.
E.
Compaction of the Mixture: After spreading, the mixture shall be thoroughly and
uniformly compressed by a power-driven roller or rollers, weighing not less than
8 tons, as soon after being spread as it will bear the roller without undue
displacement. Delays in rolling freshly spread mixture will not be tolerated.
Rolling shall start longitudinally at the sides and shall proceed toward the center
of the pavement overlapping on successive trips by at least ½ the width of a rear
wheel. Alternate trips of the roller shall be of slightly different lengths. If the
width of the pavement permits, it shall, in addition, be rolled at right angles to the
center line.
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Asphalt Pavement
The speed of the roller shall not exceed 3 miles per hour and shall, at all times, be
slow enough to avoid displacements of the hot mixture, and any displacement
occurring as a result of reversing the direction of the roller, or from any other
cause, shall at once be corrected by the use of rakes and of fresh mixture where
required. Rolling shall proceed continuously until all roller marks are eliminated.
To prevent adhesion of the mixture to the roller, the wheels shall be kept properly
moistened, but excess water will not be permitted.
The rollers shall be in good condition, capable of reversing without back-lash and
shall weight not less than 200 pounds to the inch of tread. They shall be operated
by competent and experienced rollermen and must be kept in continuous
operation as nearly as practicable in such a manner that all parts of the pavements
shall receive substantially equal compression.
Along curbs, headers, manholes, and similar structures, and all places not
accessible to the roller, thorough compactions must be secured by means of hot
tampers and at all contacts of this character, the joints between these structures
and the surface mixture must be effectively sealed.
The course, after final compaction, shall conform to the following requirements:
It shall be smooth and true to the established crown and grade. It shall have the
average thickness specified and shall at no point vary more than ¼ inch from the
thickness shown on the typical cross-section in the Plans. Any low or defective
places shall immediately be remedied by cutting out the course at such spots and
replacing it with fresh, hot mixture which shall be immediately compacted to
conform with the surrounding area and shall be free from depressions exceeding
¼-inch as measured with a 10-foot straightedge paralleling the centerline of the
roadway.
After final compaction, the finished surface course shall at no point have a
density less than 92% of the maximum density possible to be obtained in a
voidless pavement composed of the same materials in like proportions. Density
shall be determined from specimens cut from the finished pavement as directed
by the ENGINEER OWNER.
3.04
TEMPORARY ASPHALT COLD-PATCH
In the event the CONTRACTOR cannot install hot bituminous pavement, for whatever
reason, pursuant to the requirements of these documents, he shall install a temporary
asphalt cold-patch pursuant to said requirement and subsequently remove said cold-patch
and replace with hot bituminous pavement at the earliest possible date.
A.
Place suitably prepared base course.
B.
Minimum thickness: 2 inches on 6-1/2 inches of aggregate base course.
C.
The CONTRACTOR is responsible for maintaining cold-patch.
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02740-12
Asphalt Pavement
3.05
MANHOLE FRAMES AND VALVE BOXES
A.
Manhole frames and water valve vaults can be completed after paving operation
by using “plates.”
B.
Foreign matter which is introduced into manholes and valve vaults shall be
removed immediately to provide free access to the facilities.
C.
Valve vaults and manhole rings shall be straight and properly aligned.
Adjustments to be made with concrete rings and mortar only (maximum
tolerance is ¼”).
Valve boxes shall be inspected by placing a valve key on the operating nut to
assure a proper alignment.
END OF SECTION
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02740-13
Asphalt Pavement
THIS PAGE INTENTIONALLY LEFT BLANK.
Werner Elem.
02740-14
Asphalt Pavement
SECTION 02770
SIDEWALK, CURB AND GUTTER, AND MISCELLANEOUS CONCRETE
PART 1
1.01
SECTION INCLUDES
A.
1.02
Section 02315 – Excavation and Embankment
SUBMITTALS
A.
1.04
Concrete work shall consist of air entrained Portland Cement concrete constructed on a
prepared subgrade in accordance with these Specifications. The completed work shall
conform to the thicknesses and typical cross-sections shown on the Drawings. The
completed work shall conform to the lines and grades shown on the Drawings or to
those established by the ENGINEER OWNER at the job site.
RELATED SECTIONS
A.
1.03
GENERAL
The CONTRACTOR shall cooperate with the ENGINEER OWNER in obtaining and
providing samples of all specified materials. The CONTRACTOR shall submit
certified laboratory test certificates for all items required in this section, including a
mix design for concrete.
PROJECT REQUIREMENTS
The CONTRACTOR shall submit batch tickets for each load of concrete. Tickets shall show
weight of all materials and additives used in each batch.
PART 2
2.01
PRODUCTS
MATERIALS
A.
Concrete shall conform to the following requirements:
28-Day Field Compressive Strength
Cement/Fly Ash
Max. Water/Cement Ratio
Air Content % Range
Maximum Slump
Fine Aggregate (max. % of total Aggregate)
3500 psi
600 lbs./cu. yd.
0.53
5-8
4"
50%
This material shall consist of a mixture of coarse and fine aggregates, Portland cement,
water and other materials or admixtures as required. The type of cement shall be Type I,
II, or I/II unless sulfate conditions dictate otherwise. If sulfate conditions exist, Type V
cement shall be used.
Werner Elem.
02770-1
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
B.
Concrete Aggregates:
The grading and composition requirements for coarse and fine aggregates for concrete
shall conform to the following tables.
COARSE AGGREGATES FOR PORTLAND CEMENT CONCRETE
Sieve Size or
Test Procedure
1 Inch
¾ Inch
3
⁄8 Inch
No. 4
No. 8
% Wear
Clay Lumps * Friable Particles, %
Coal & Lignites, %
Sodium Sulfate Soundness %
% Passing or
Test Requirement
100
90-100
20-55
0-10
0-5
45, Max.
2.0, Max.
0.5, Max.
12, Max.
FINE AGGREGATES FOR PORTLAND CEMENT CONCRETE
Sieve Size or
Test Procedure
3
⁄8 Inch
No. 4
No. 16
No. 50
No. 100
No. 200
Friable Particles, %
Coal & Lignite, %
Deleterious Material (AASHTO T 112),%
Sand Equivalent (AASHTO T 176),%
Fineness Modules
Sodium Sulfate Soundness, %
C.
Percent Passing or
Test Requirement
100
95 - 100
45 - 80
10 - 30
2 - 10
3, Max.
1.0, Max.
1.0, Max.
3, Max.
80, Min.
2.50 - 3.50
20.0, Max.
Coarse Aggregate for Concrete:
Coarse aggregates shall conform to the requirements of AASHTO M 80, except that the
percentage of wear shall not exceed 45 when tested in accordance with AASHTO T 96.
Coarse aggregate shall conform to the grading in above table.
D.
Fine Aggregate for Concrete:
Fine aggregates shall meet Colorado Department of Highways Section 703.01
requirements and gradation as shown above. Fine aggregate for concrete shall conform
to the requirements of AASHTO M 6. The amount of deleterious substances removable
by elutriation shall not exceed 3% by dry weight of fine aggregate when tested in
accordance with AASHTO T 11, unless otherwise specified. The minimum Sand
Equivalent, as tested in accordance with AASHTO T 176 shall be 80, unless otherwise
Werner Elem.
02770-2
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
specified. The Fineness Modules shall not be less than 2.50 nor greater than 3.50, unless
otherwise approved.
E.
Fly Ash and Water:
Upon approval based on a satisfactory trail mix, the CONTRACTOR shall have the
option of substituting approved fly ash for portland cement, up to a maximum of 20
percent by weight. The total weight of cement and fly ash shall not be less than the
specified mix design.
1.
Fly ash for concrete shall conform to the requirements of ASTM C 618, Class C
or Class F. All chemical requirements of ASTM C 618 Table 1-A shall apply
with the exception of footnote A.
Class C fly ash will not be permitted where sulfate resistant cement is required.
The CONTRACTOR shall submit certified laboratory test results for the fly
ash. Test results that do not meet the physical and chemical requirements may
result in the suspension of the use of fly ash until the corrections necessary have
been taken to insure that the material meets the specifications.
2.
F.
Water used in mixing or curing shall be clean and free of oil, salt, acid, alkali,
sugar, vegetable, or other substance injurious to the finished product. Water
will be tested in accordance with, and shall meet the suggested requirements of
AASHTO T 26. Water known to be of potable quality may be used without
test. Where the source of water is relatively shallow, the intake shall be so
enclosed as to exclude silt, mud, grass, or other foreign materials.
Concrete Curing Materials and Admixtures
1.
Curing Materials:
Curing Materials shall conform to the following
requirements as specified:
Burlap Cloth made from Jute or Kenaf: AASHTO M 182
Liquid Membrane-Forming Compounds Curing Concrete: AASHTO M
Sheet Materials for Curing Concrete: AASHTO M 171
Straw shall not be used for curing unless approved by the ENGINEER
OWNER.
Werner Elem.
2.
Air-Entraining Admixture: Air-entraining admixtures shall conform to the
requirements of AASHTO M 154. Admixtures which have been frozen will be
rejected. No chloride containing additives shall be permitted.
3.
Chemical Admixtures: Chemical admixtures for concrete shall conform to the
requirements of AASHTO M 194. Admixtures which have been frozen will be
rejected.
4.
Joint Fillers: The joint fillers shall meet the requirements of one or more of the
references listed in paragraph 1.03.
02770-3
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
PART 3
3.01
EXECUTION
SUBGRADE PREPARATION
A.
The subgrade shall be excavated or filled to the required grades and lines. All soft,
yielding, or otherwise unsuitable material shall be removed and replaced with suitable
material with the ENGINEER's OWNER's approval. Filled sections shall be compacted
and compaction shall extend a minimum of six inches outside the form lines.
The moisture content of the subgrade shall be brought within +/- 2% of optimum
moisture content and compacted to 95% of the maximum standard Proctor density
(ASTM D698) for subgrade materials classified as A-4 through A-7 or 95% of modified
proctor density for materials classified as A-1 through A-3.
3.02
CONCRETE PLACEMENT
A.
3.03
MACHINE PLACEMENT
A.
3.04
Concrete transported in truck mixers or truck agitators shall be delivered to the site of
the work and completely discharged within a period of ninety (90) minutes after the
cement comes in contact with the mixing water or with the combined aggregates
containing free moisture in excess of 2% by weight. The concrete shall be placed either
by an approved slip form/extrusion machine, by the formed method, or by a
combination of these methods. The subgrade shall be conditioned to provide a
uniformly moist surface when concrete is placed.
The slip form/extrusion machine shall be so designed to place, spread, consolidate,
screed, and finish the concrete in one complete pass in such a manner that a minimum of
hand finishing will be necessary to provide a dense and homogenous concrete section.
The machine shall shape, vibrate, and/or extrude the concrete for the full width and
depth of the concrete section being placed. It shall be operated with as nearly a
continuous forward movement as possible. All operations of mixing, delivery, and
spreading concrete shall be so coordinated as to provide uniform progress, with stopping
and starting of the machine held to a minimum.
FORMED METHOD
A.
The vertical face of previously sawed and adjacent asphalt pavement may NOT be used
as a forming surface. The CONTRACTOR shall use forms on front and back of all curb
and gutter, sidewalks and crosspans.
The forms shall be of metal or other suitable material that is straight and free from warp,
having sufficient strength to resist the pressure of the concrete without displacement and
sufficient tightness to prevent the leakage of mortar. Flexible or rigid forms of proper
curvature may be used for curves having a radius of 100 feet or less. Division plates
shall be metal. Where directed by the ENGINEER OWNER the CONTRACTOR shall
use a thin metal back form to preserve landscaping, sprinklers, etc. Form must be
straight and rigid and must be approved by the ENGINEER OWNER prior to use on
project.
The front and back forms shall extend for the full depth of the concrete. All of the forms
shall be braced and staked so that they remain in both horizontal and vertical alignment
until their removal. No wooden stakes will be allowed. They shall be cleaned and
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02770-4
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
coated with an approved form-release agent before concrete is placed against them. The
concrete shall be deposited into the forms without segregation and then it shall be
tamped and spaded or mechanically vibrated for thorough consolidation. Low roll or
mountable curbs may be formed without the use of a face form by using a straight edge
and template to form the curb face. When used, face forms shall be removed as soon as
possible to permit finishing. Front and back forms shall be removed without damage to
the concrete after it has set.
Should the removal of adjacent asphalt pavement be required beyond that shown in the
asphalt patch detail to properly correct failed concrete sections, the CONTRACTOR
shall remove and replace said asphalt pavement to such an extent as to provide a smooth
repair. The ENGINEER OWNER shall be notified prior to commencing any additional
asphalt removal.
3.05
FINISHING
A.
3.06
The plastic concrete shall be finished smooth by means of a wood float and then it shall
be given final surface texture using a light broom or burlap drag. Concrete that is
adjacent to forms and formed joints shall be edged with a suitable edging tool to the
dimensions shown on the Drawings.
JOINTING
A.
Contraction Joints: Transverse weakened-plane contraction joints shall be constructed
at right angles to the curb line at intervals not exceeding 10 feet for curb and gutter or 5
feet for sidewalk. Joint depth shall average at least one-fourth of the cross-section of the
concrete.
Contraction joints may be sawed, hand-formed, or made by 1/8 inch thick division
plates in the form work. Sawing shall be done early after the concrete has set to prevent
the formation of uncontrolled cracking. The joints may be hand-formed either by (1)
using a narrow or triangular jointing tool or a thin metal blade to impress a plane of
weakness into the plastic concrete, or (2) inserting 1/8 inch thick steel strips into the
plastic concrete temporarily. Steel strips shall be withdrawn before final finishing of the
concrete. Where division plates are used to make contraction joints, the plates shall be
removed after the concrete has set and while the forms are still in place.
B.
Expansion Joints: Expansion joints shall be constructed at right angles to the curb line
at immovable structures and at points of curvature for short radius curves. Filler
material for expansion joints shall conform to requirements of one or more of the
references defined in Section 1.03 and shall be furnished in a single 1/2 inch thick piece
for the full depth and width of the joint.
Expansion joints in a slip formed curb or curb-and-gutter shall be constructed with an
appropriate hand tool by raking or sawing through partially set concrete for the full
depth and width of the section. The cut shall be only wide enough to permit a snug fit
for the joint filler. After the filler is placed, open areas adjacent to the filler shall be
filled with concrete and then troweled and edged. The CONTRACTOR may choose to
place the filler and pour the concrete around it.
Alternately, an expansion joint may be installed by removing a short section of freshly
extruded curb-and-gutter immediately, installing temporary holding forms, placing the
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02770-5
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
expansion joint filler, and replacing and reconsolidating the concrete that was removed.
Contaminated concrete shall be discarded.
Construction joints may be either butt or expansion-type joints. Curbs or combined
curbs and gutters constructed adjacent to existing concrete shall have the same type of
joints as in the existing concrete, with similar spacing; however, contraction joint
spacing shall not exceed 10 feet.
3.07
PROTECTION
A.
The CONTRACTOR shall always have materials available to protect the surface of the
plastic concrete against rain. These materials shall consist of waterproof paper or plastic
sheeting. For slip form construction, materials such as wood planks or forms to protect
the edges shall also be required. Concrete damaged by rain shall be required to be
removed and replaced at the CONTRACTOR’s expense.
Concrete being placed in cold weather during which the temperature may be expected to
drop below 35 degrees F., shall be suitably protected to keep the concrete from freezing
until it is at least 10 days old. Concrete injured by frost action shall be required to be
removed and replaced at the CONTRACTOR’s expense.
The CONTRACTOR will be responsible for correcting any vandalism or defacement
(graffiti) that occurs on the concrete prior to final acceptance.
3.08
CURING
A.
3.09
BACKFILLING
A.
3.10
The spaces in front and back of curbs shall be refilled with suitable material to the
required elevations after the concrete has set sufficiently. The fill material shall be
thoroughly tamped in layers.
SEALING
A.
3.11
Concrete shall be cured for at least 7 days after placement to protect against loss of
moisture, rapid temperature change, and mechanical injury prior to any overlay or
reconstruction work. Moist burlap, waterproof paper, white polyethylene sheeting,
white liquid membrane compound, or a combination thereof may be used as the curing
material. Membrane curing shall not be permitted in frost-affected areas when the
concrete will be exposed to deicing chemicals within 30 days after completion of the
curing period.
Where required, concrete shall be sealed with a mixture of 1/2 linseed oil and 1/2 diesel
fuel, unless otherwise specified by ENGINEER OWNER.
TOLERANCE
A.
Forms shall not deviate from true line by more than ¼-inch at any point.
B.
Mixed concrete shall be not less than 50°F, nor more than 80°F at the time of placing it
in forms unless otherwise directed.
Werner Elem.
02770-6
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
C.
If air temperature is 35°F or less at the time of placing, the ENGINEER OWNER will
require water and/or aggregate heated to not less than 70°F, or more than 150°F.
D.
Finished joints shall not deviate more than ¼-inch in the horizontal alignment from a
straight line.
E.
Any localized humps and or depressions greater than ¼-inch will require removal and
replacement of the work in question.
F.
No ponding of water greater than 3/8-inch shall be allowed.
G.
Combination curb, gutter and walk and/or vertical curb and gutter flowline depth shall
not vary from adopted standards by more than +1/2-inch, measured vertically from the
top of curb to the gutter invert.
H.
Pedestrian walks shall have a minimum of 2.0% and a maximum of 2.5% slope toward
the roadway.
I.
Contraction and construction joints shall be placed at the standard spacing of 10 feet in
curb, gutter, sidewalks, crosspans, trickle channel, etc. A minimum spacing of 5 feet
will be allowed for repairs.
J.
Heave or settlement of sidewalk, relative to separate curb pour, greater than ½-inch shall
be cause for corrective action. This provision shall not apply to transverse sidewalk
joints.
K.
At the time of final acceptance inspection, the repair of all cracks will be completed.
1.
Cracks that are less than ¼-inch wide, exhibit no horizontal or vertical shifting,
and do not meet the conditions in 2, 3, and 4 below may, at the discretion of the
OWNER, be sealed by routing approximately ¾-inch to 1-inch deep by ¼-inch
wide and filling with Sikaflex 1-A or equivalent.
2.
Any crack that extends through a joint shall require removal and replacement of
the entire cracked area.
3.
Any longitudinal cracked section of concrete will require complete removal and
replacement of that section between joints.
4.
Repair action for hairline cracks as determined in 1 above may be waived at the
discretion of the OWNER. For the purpose of this section, a hairline crack is
one that is reasonably immeasurable and without separation as determined by
the ENGINEER OWNER.
3.12
QUALITY CONTROL
A.
Concrete testing and testing laboratory services required shall conform to the following unless
otherwise determined by the ENGINEER OWNER.
Procedures
Section Type of Test
Werner Elem.
Project Acceptance
Frequency
02770-7
Test
Sampling
Project
Testing
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
GRADATION
Sidewalks: 1/1000 sq yds
or fraction thereof for
each size aggregate of
concrete placed
CP 30
CP 31
CP 30
CP 60
MOISTURE
CONTENT
(COARSE
AGGREGATE)
1 per day min. where
CP 30
moisture content is greater
than +0.5% from SSD condition
CP 60
SLUMP
The slump, air content and
unit weight tests shall be
carried out on the first
truck of concrete for the
daily placement and thereafter in conformance with
the following table:
T 141
T 119
AIR CONTENT
1 set of tests for every
1000 square yards or fraction
thereof of concrete placed
T 141
T 199
T 152
YIELD AND
CEMENT
4 tests for every 2000
lineal feet or fraction thereof
or nomograph of curb and
gutter graph placed
T 141
T 121
SIDEWALKS
(CONCRETE)
CURBING
(CONCRETE)
Curbing: 1/2000 lineal feet or
fraction thereof for each
size aggregate of concrete
placed
MOISTURE
CONTENT
(FINE AGGREGATE)
1 per day and as often
as needed for quality
control
COMPRESSIVE
Sidewalks: 1 set (4) of
T 141
cylinders per 1000 square yards
or fraction thereof or
concrete placed per day
T 22
T 23
Curbing: 1 set (4) of
cylinders per 2000 lineal
feet or fraction thereof
of concrete placed per day
Point of Acceptance: Gradation - Stockpile, belt, or bin
Air Content - Mixer Discharge
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02770-8
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
Prior to backfilling and after forms are removed, honeycombed, defective or damaged areas of
concrete shall be repaired. Repairs shall be made within 7 days after the forms are removed.
3.13
CLEAN-UP
A.
The surface of the concrete shall be thoroughly cleaned upon completion of the work and
prior to the substantial completion walk through, and the site left in a neat and orderly
condition.
END OF SECTION
Werner Elem.
02770-9
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
THIS PAGE INTENTIONALLY LEFT BLANK.
Werner Elem.
02770-10
Sidewalk, Curb and Gutter,
and Miscellaneous Concrete
APPENDIX A
SUBSURFACE EXPLORATION REPORT
PROPOSED PAVEMENT RECONSTRUCTION
WERNER ELEMENTARY SCHOOL
EARTH ENGINEERING CONSULTANTS
SUBSURFACE EXPLORATION REPORT
PROPOSED PAVEMENT RECONSTRUCTION
WERNER ELEMENTARY SCHOOL
5400 MAIL CREEK LANE
FORT COLLINS, COLORADO
EEC PROJECT NO. 1122109
Prepared for:
Poudre School District
c/o Anderson Consulting Engineers, Inc.
375 East Horsetooth Road, Building 5
Fort Collins, Colorado 80525
Attn: Mr. Scott Parker, P.E.
Prepared by:
Earth Engineering Consultants, Inc.
4396 Greenfield Drive
Windsor, Colorado 80550
December 17, 2012
Poudre School District
c/o Anderson Consulting Engineers, Inc.
375 East Horsetooth Road, Building 5
Fort Collins, Colorado 80525
Attn: Mr. Scott R. Parker, P.E. (srparker@acewater.com)
Re:
Subsurface Exploration Report
Proposed Pavement Reconstruction
Werner Elementary School
5400 Mail Creek Lane
Fort Collins, Colorado
EEC Project No. 1122109
Mr. Parker:
Enclosed, herewith, are the results of the geotechnical subsurface exploration completed by
Earth Engineering Consultants, Inc. (EEC) personnel for the proposed pavement
reconstruction project for Werner Elementary School located at 5400 Mail Creek Lane in Fort
Collins, Colorado. As a part of this exploration, ten (10) soil borings extending to depths of
approximately 10 feet below existing site grades were advanced within the proposed
pavement reconstruction areas to develop information on existing pavement and subsurface
conditions. This exploration was completed in general accordance with our proposal dated
November 27, 2012.
In summary, the existing surface pavement and aggregate base thicknesses were relatively
thin. The subgrade soils encountered beneath the existing pavement section generally
consisted of sandy lean clay with clayey sand observed in two (2) borings. The cohesive
subgrade soils extended to the depths explored, approximately 10 feet below current surface
grading. Free water was not encountered in any of the test borings at the time of our
exploration.
The cohesive subgrade soils were generally medium stiff to stiff and exhibited relatively low
swell potential. The subgrade soils where in-situ moisture contents appeared elevated would
be expected to be unstable under construction traffic after removal of the existing pavement
structure. Recommendations for subgrade/ground stabilization measures are provided within
the text portion of this report.
4396 GREENFIELD DRIVE
WINDSOR, COLORADO 80550
(970) 545-3908
FAX (970) 663-0282
www.earth-engineering.com
SUBSURFACE EXPLORATION REPORT
PROPOSED PAVEMENT RECONSTRUCTION
WERNER ELEMENTARY SCHOOL
5400 MAIL CREEK LANE
FORT COLLINS, COLORADO
EEC PROJECT NO. 1122109
December 17, 2012
INTRODUCTION
The subsurface exploration for the proposed pavement reconstruction/improvements at the existing
Werner Elementary School located at 5400 Mail Creek Lane in Fort Collins, Colorado, has been
completed. The field exploration for this project included drilling ten (10) soil borings to depths of
approximately 10 feet below present site grades within proposed pavement improvement areas to
obtain information on existing pavement thicknesses and in-situ subsurface conditions. Individual
boring logs and a site diagram indicating the approximate boring locations are included with this
report.
We understand this project involves the improvement/reconstruction of existing pavement areas at
the existing Werner Elementary School as outlined on the attached boring location diagram. We
understand the layout of the pavement areas will remain essentially the same as the existing
configuration after the reconstruction efforts are completed although a small area of new pavement
will be added in Phase II in the general vicinity of boring B-9. The main pavement corridors are
anticipated to receive moderate to heavy traffic flow. The parking areas are expected to receive low
volumes of light vehicle/automobile traffic. Based on the information we received from Anderson
Consulting Engineers, the project’s civil engineering consultant, minor vertical realignment may be
necessary in some areas to accommodate drainage improvements; however, essentially no horizontal
realignment or expansion is expected.
The purpose of this report is to describe the existing pavement thickness and subsurface conditions
encountered in the borings, analyze and evaluate the test data and provide geotechnical
recommendations concerning design and construction of new pavements after removal of the
existing pavement sections.
EXPLORATION AND TESTING PROCEDURES
The boring locations were established in the field by Earth Engineering Consultants, Inc. (EEC)
personnel by pacing and estimating angles from identifiable site references. The approximate boring
locations are indicated on the attached boring location diagram. The locations of the borings should
be considered accurate only to the degree implied by the methods used to make the field
measurements.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 2
The borings were performed using a truck mounted, CME-45 drill rig, equipped with a hydraulic
head employed in drilling and sampling operations. The boreholes were advanced using 4-inch
nominal diameter continuous flight augers and samples of the subsurface materials encountered were
obtained using split-barrel and California sampling techniques in general accordance with ASTM
Specifications D1586 and D3550, respectively. Additional “bulk” samples of the subgrade materials
were obtained from the auger cuttings.
In the split-barrel and California barrel sampling procedures, standard sampling spoons are driven
into the ground by means of a 140-pound hammer falling a distance of 30 inches. The number of
blows required to advance the split barrel and California barrel samplers is recorded and is used to
estimate the in-situ relative density of cohesionless materials and, to a lesser degree of accuracy, the
consistency of cohesive soils. All samples obtained in the field were sealed and returned to the
laboratory for further examination, classification and testing.
Moisture content tests were completed on each of the recovered samples. Washed sieve analysis and
Atterberg limits tests were performed on selected samples to help establish the percentage of fines
and plasticity of the subgrade soils. Swell/consolidation tests were performed on selected samples to
evaluate the potential for the subgrade soils to change volume with variation in moisture content and
loading conditions. A Hveem stabilometer (R-Value) test was completed on a composite sample of
the subgrade materials to evaluate the remolded subgrade strength characteristics for the pavement
design. Results of the outlined tests are indicated on the attached boring logs and summary sheets.
As a part of the testing program, all samples were examined in the laboratory and classified in
accordance with the attached General Notes and the Unified Soil Classification System, based on the
soil's texture and plasticity. The estimated group symbol for the Unified Soil Classification System
is shown on the boring logs and a brief description of that classification system is included with this
report.
SITE AND SUBSURFACE CONDITIONS
The pavement improvement areas generally surround the existing Werner Elementary School
building. The improvement areas are indicated on the attached “Boring Location” diagram. The
existing pavements appeared to be in relatively poor condition.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 3
An EEC representative was on-site during drilling to evaluate the subsurface materials
encountered and direct the drilling activities. Field logs prepared by EEC site personnel were
based on visual and tactual observation of disturbed samples and auger cuttings. Final boring
logs included with this report may include modifications to those field logs based on the results of
laboratory testing and engineering evaluation. Based on the results of the field boring and
laboratory testing, subsurface conditions can be generalized as follows.
The existing pavement sections generally included 2 to 3½ inches of hot bituminous pavement
(HBP) over aggregate base ranging in the thickness from approximately 2 to 9 inches. At boring
location B-9, the surfacing material generally included about 6 inches of a gravel surface.
The subgrade soils encountered beneath the existing pavement sections generally consisted of
materials classified sandy lean clay although the near surface soils in borings B-1 and B-2 were
classified as clayey sand. The native cohesive soils were generally medium stiff to stiff and
exhibited relatively low swell potential with increase in moisture and load at current moisture and
density conditions. The in-place soils appeared to be relatively moist with measured moisture
contents generally in the 15 to 20% range. The sandy lean clay extended to the bottom of the
borings at depths of approximately 10 feet below current site grades.
The stratification boundaries indicated on the boring logs represent the approximate locations of
changes in soil types; in-situ, the transition of materials may be gradual and indistinct.
GROUNDWATER LEVEL OBSERVATION
Observations were made while drilling and after completion of the borings to detect the presence
and depth to hydrostatic groundwater. No free water was observed in the borings either during or
immediately after completion of drilling. The boreholes were backfilled upon completion so that
longer term monitoring for groundwater depth was not possible. Longer-term observations in
cased holes sealed from the influence of surface water would be required to more accurately
evaluate groundwater levels. Fluctuations in groundwater levels can occur overtime depending
on variation in hydrologic conditions and other conditions not apparent at the time of this report.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 4
ANALYSIS AND RECOMMENDATIONS
Visual Evaluation of Existing Pavement Structure
As illustrated on the enclosed site photographs and based on the initial site visit/walk-through on
November 20, 2012, various areas of the asphaltic concrete surface material/hot mix asphalt
(HMA) pavement materials, across the site exhibited longitudinal, transverse and/or alligator
cracking. The majority of the longitudinal and transverse cracks were “crack-sealed”.
The existing pavement section for the site, as previously presented, was relatively thin ranging
from 2 to 3½ inches of HMA, underlain by 2 to 9 inches of ABC; however, variations may exist
across the site. These varying thicknesses across the site would correlate to overall structural
numbers ranging from about 0.98 to 1.84, or an average of about 1.55. As further discussed in
this report we have estimated structural numbers for the reconstruction efforts to be
approximately 2.59 for the automobile parking areas and approximately 3.57 for the heavy duty
pavement sections; thus indicating that the existing pavement section in general are deficient for
the anticipated traffic conditions.
For cohesive subgrade soils, it is typically suggested to place a zone of aggregate base course
(ABC) between the hot mix asphalt (HMA) section and the underlying subgrade to reduce the
potential for trapped moisture. The ABC section acts as a capillary break mechanism, a load
distribution, and a leveling course. For the rehabilitation/reconstruction of the on-site pavement
areas we would recommend the use of a composite section over a stabilized subgrade section.
Swell – Consolidation Test Results
The swell-consolidation test is performed to evaluate the swell or collapse potential of soils. In this
test, relatively undisturbed samples obtained directly from the California barrel sampler are placed
in a laboratory apparatus and inundated with water under a predetermined load. The swell-index is
the resulting amount of swell or collapse expressed as a percent of the sample’s initial thickness.
After the initial movement appears completed, additional incremental loads are applied to evaluate
swell pressure and possible consolidation.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 5
For this assessment, we conducted five (5) swell-consolidation tests on samples obtained at
approximate depths of 1 to 2 feet below site grades. The swell index values for the soil samples
tested at 150-psf inundation pressure generally revealed relatively low swell potential ranging from
(+) 0.0 to (+) 3.1%. The (+) test results indicate the swell potential characteristics of the soil upon
inundation with water. The laboratory test results for the swell-consolidation testing procedures are
included with this report.
Subgrade Preparation Recommendations
We understand all existing pavements will be removed from the proposed pavement replacement
areas. Existing aggregate base and/or gravel surfacing materials, where encountered, could
remain in-place beneath the new pavement sections or incorporated into the pavement subgrades.
Areas of the subgrades appear to be moist to very moist beneath the existing pavements. Those
areas of high moisture content will likely show instability with pumping and rutting under
construction traffic loads.
After removal of existing pavements and completing any required cuts and prior to placement of
any fill, or pavement materials, we recommend the in-place soils be scarified to a minimum depth
of 12 inches, adjusted in moisture content and compacted to at least 95% of the material's
maximum dry density as determined in accordance with ASTM Specification D-698, the standard
Proctor procedure. The moisture content of the scarified soils should be adjusted to be within the
range of 2% of standard Proctor optimum moisture at the time of compaction. If soft or loose
zones are observed during the scarification/compaction process, additional reworking of the
subgrades may be required. The subgrades should be closely observed to evaluate the suitability
of the in-situ soils. If the subgrades will be stabilized with the addition of Class “C” fly ash as
subsequently outlined in this report, the scarification and compaction could be accomplished in
conjunction with the stabilization process.
Due to the slightly elevated in-situ moisture contents in various areas across the site, after
removal of the existing pavement section during the reconstruction phase, soft/compressible
subgrade conditions may exist in which ground stabilization may be necessary to create a
working platform for construction equipment and/or placement of additional fill, where
applicable.
Placement of a granular material, such as a 3-inch minus recycled concrete or
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 6
equivalent, may be necessary as a subgrade enhancement layer embedded into the soft soils, prior
to placement of additional fill material or operating heavy earth-moving equipment.
Supplemental recommendations can be provided upon request.
If any fill soils are required to develop pavement subgrades, those fill materials should consist of
approved, low-volume change materials which are free from organic matter and debris. It is our
opinion the near surface sandy lean clay or clayey sand material could be used as fill in these
areas. Fill soils should be placed in loose lifts with a maximum thickness of 9 inches, adjusted in
moisture content and compacted to at least 95% of the material’s standard Proctor maximum dry
density. The moisture content of the fill soils should be adjusted to be within ±2% of the
material’s standard Proctor optimum moisture content.
We expect the subgrades exposed after removal of the existing pavements will show areas of
instability, pumping and possible rutting. We recommend stabilization of the subgrades with the
addition of Class “C” fly ash be considered to allow for construction of the pavement section atop
a stable platform. Based on prior experience with similar materials, we recommend 13% Class
“C” fly ash, based on dry weights, be incorporated with the subgrade soils for the stabilization.
The stabilized zone should be 12-inches thick with compaction to at least 95% of the standard
Proctor maximum dry density. The moisture content should be adjusted to -3 to +1% of standard
Proctor optimum moisture at the time of compaction.
Care should be taken after preparation of the subgrades to avoid disturbing the subgrade
materials. Materials which are loosened or disturbed by the construction activities or materials
which become dry and desiccated or wet and softened should be removed and replaced prior to
placement of the overlying fill or pavement structure. Care should be taken to maintain proper
moisture contents in the subgrade soils prior to placement of any overlying improvements.
Pavement Sections
Pavement section designs are based on subgrade conditions and anticipated traffic volumes.
Based on the subsurface conditions encountered across the site and the laboratory test results, we
are providing the pavement thicknesses herein using a Hveem Stabilometer/R-Value of 11 as
determined in laboratory testing. The traffic volumes and estimated 18 kip equivalent single axle
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 7
loads (18-kip ESAL’s) are based on our experience with similar projects and current LCUASS
pavement design guidelines.
For a total reconstruction of the on-site pavement areas, we recommend that at least the upper 1foot of subgrade material beneath the final pavement section be stabilized with fly ash to enhance
the integrity of the subgrade section and increase the life of the pavement section. Recommended
pavement sections are provided in Table 1 below.
Pavement design methods are intended to provide structural sections with adequate thickness over a
particular subgrade such that wheel loads are reduced to a level the subgrade can support. The
support characteristics of the subgrade for pavement design do not account for shrink/swell
movements of a soft/compressible clay subgrade. Thus, the pavement may be adequate from a
structural standpoint, yet still experience cracking and deformation due to shrink/swell related
movement of the subgrade. It is, therefore, important to minimize moisture changes in the subgrade
to reduce shrink/swell movements.
Recommended alternatives for the on-site pavement
improvements are as follows:
TABLE 1 –Minimum Pavement Thicknesses for On-Site Pavement Improvement Areas
Light Duty / Automobile
Parking Areas
Heavy Duty/Bus
Lanes and Main
Traffic Corridors
10
50
18 kip Equivalent Single Axle Loads (ESAL’s) 20-year
73,000
365,000
Resilient Modulus (R = 11)
Reliability
Serviceability Loss (Terminal Service=2.2 and 2.5)
Design Structural Number – 20-year design life
3681
75%
2.3
2.59
3681
85
2.0
3.57
3-1/2″ @ 0.44 = 1.54
6″ @ 0.11 = 0.66
12″ @ 0.05 = 0.60
2.80
5″ @ 0.44 = 2.20
8″ @ 0.11 = 0.88
12″ @ 0.05 = 0.60
3.68
6″ Minimum
8″ Minimum
18 kip Equivalent Daily Load Axles (EDLA)
Composite Section: – with Fly Ash Stabilized Subgrade
Hot Mix Asphalt Pavement
Aggregate Base
Fly Ash treated subgrade (13% Class C Fly ash – 12”)
Structural Number
Portland Cement Concrete Pavement – PCCP
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 8
Asphaltic concrete for use in the hot bituminous pavements (HBP) should consist of grading S
(75) or SX (75) with PG 58-28 performance graded binder. The pavement materials should be
compacted to within 92 to 96% of maximum theoretical density (Rice value). The aggregate base
should be either Class 5 or Class 6 base consistent with LUCASS Standards.
Portland cement concrete pavements should be constructed of exterior pavement mix concrete
with a 28 day compressive strength of at least 4,200 psi. The concrete should be air entrained.
The recommended pavement sections are based on non-reinforced concrete although woven wire
mesh or fiber mesh should be considered to help control shrinkage cracking.
Pavement Considerations
The collection and diversion of surface drainage away from paved areas is critical to the
satisfactory performance of the pavement. Drainage design should provide for the removal of
water from paved areas in order to reduce the potential for wetting of the subgrade soils.
Long-term pavement performance will be dependent upon several factors, including maintaining
subgrade moisture levels and providing for preventive maintenance.
The following
recommendations should be considered the minimum if a total reconstruction is planned for the
site:

The subgrade and the pavement surface should be adequately sloped to promote proper surface
drainage.

Install pavement drainage surrounding areas anticipated for frequent wetting (e.g. along curb
and gutter alignments, islands, and any potential areas where surface water intrusion may
occur),

Install joint sealant and seal cracks immediately, especially between HMA and concrete curbs,
sidewalks, etc.

Seal all landscaped areas in, or adjacent to pavements to minimize or prevent moisture
migration to subgrade soils.

Place compacted, low permeability backfill against the exterior side of curb and gutter.

Place curb, gutter, and/or sidewalk directly on approved moisture conditioned and compacted,
proof rolled soils without the use of base course material.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 9
Preventive maintenance should be planned and provided for with an on-going pavement
management program. Preventive maintenance activities are intended to slow the rate of pavement
deterioration, and to preserve the pavement investment. Preventive maintenance consists of both
localized maintenance (e.g. crack and joint sealing and patching) and global maintenance (e.g.
surface sealing). Preventive maintenance is usually the first priority when implementing a planned
pavement maintenance program and provides the highest return on investment for pavements. Prior
to implementing any maintenance, additional engineering observation is recommended to determine
the type and extent of preventive maintenance.
Zones of perched and/or trapped water may be encountered at different times throughout the year
in more permeable zones in the subgrades. The location and amount of perched and/or trapped
water and the depth to the hydrostatic groundwater can vary over time depending on hydrologic
conditions and other conditions not apparent at the time of this report.
Please note that if during or after placement of the stabilization or initial lift of pavement, the area
is observed to be yielding under vehicle traffic or construction equipment, it is recommended that
EEC be contacted for additional alternative methods of stabilization, or a change in the pavement
section.
Water Soluble Sulfates – (SO4)
The water soluble sulfate (SO4) testing of the on-site subgrade materials were less than 20 ppm.
Sulfate contents less than 0.1% (1,000 ppm) is considered negligible risk of sulfate attack on
Portland cement concrete. The laboratory results indicate that ASTM Type I Portland cement is
useable for site concrete on and below grade. However, if there is no, or minimal significant cost
differential, use of ASTM Type I-II Portland cement is recommended for additional sulfate
resistance of construction concrete. Foundation concrete should be designed in accordance with the
provisions of the ACI Design Manual, Section 318, Chapter 4.
Earth Engineering Consultants, Inc.
EEC Project No. 1122109
December 17, 2012
Page 10
GENERAL COMMENTS
The analysis and recommendations presented in this report are based upon the data obtained from
the soil boring performed at the indicated locations and from any other information discussed in
this report. This report does not reflect any variations which may occur between boring or across
the site. The nature and extent of such variations may not become evident until construction. If
variations appear evident, it will be necessary to re-evaluate the recommendations of this report.
It is recommended that the geotechnical engineer be retained to review the plans and
specifications so that comments can be made regarding the interpretation and implementation of
our geotechnical recommendations in the design and specifications. It is further recommended
that the geotechnical engineer be retained for testing and observations during earthwork and
foundation construction phases to help determine that the design requirements are fulfilled.
This report has been prepared for the exclusive use of Poudre School District/Anderson
Consulting Engineers, Inc. for specific application to the project discussed and has been prepared
in accordance with generally accepted geotechnical engineering practices. No warranty, express
or implied, is made. In the event that any changes in the nature, design or location of the project
as outlined in this report are planned, the conclusions and recommendations contained in this
report shall not be considered valid unless the changes are reviewed and the conclusions of this
report modified or verified in writing by the geotechnical engineer.
DRILLING AND EXPLORATION
DRILLING & SAMPLING SYMBOLS:
SS: Split Spoon - 13/8" I.D., 2" O.D., unless otherwise noted
ST: Thin-Walled Tube - 2" O.D., unless otherwise noted
R: Ring Barrel Sampler - 2.42" I.D., 3" O.D. unless otherwise noted
PA: Power Auger
HA: Hand Auger
DB: Diamond Bit = 4", N, B
AS: Auger Sample
HS: Hollow Stem Auger
PS: Piston Sample
WS: Wash Sample
FT: Fish Tail Bit
RB: Rock Bit
BS: Bulk Sample
PM: Pressure Meter
WB: Wash Bore
Standard "N" Penetration: Blows per foot of a 140 pound hammer falling 30 inches on a 2-inch O.D. split spoon, except where noted.
WATER LEVEL MEASUREMENT SYMBOLS:
WL : Water Level
WCI: Wet Cave in
DCI: Dry Cave in
AB : After Boring
WS :
WD :
BCR:
ACR:
While Sampling
While Drilling
Before Casing Removal
After Casting Removal
Water levels indicated on the boring logs are the levels measured in the borings at the time indicated. In pervious soils, the indicated
levels may reflect the location of ground water. In low permeability soils, the accurate determination of ground water levels is not
possible with only short term observations.
DESCRIPTIVE SOIL CLASSIFICATION
Soil Classification is based on the Unified Soil Classification
system and the ASTM Designations D-2488. Coarse Grained
Soils have move than 50% of their dry weight retained on a #200
sieve; they are described as: boulders, cobbles, gravel or sand.
Fine Grained Soils have less than 50% of their dry weight
retained on a #200 sieve; they are described as : clays, if they
are plastic, and silts if they are slightly plastic or non-plastic.
Major constituents may be added as modifiers and minor
constituents may be added according to the relative proportions
based on grain size. In addition to gradation, coarse grained
soils are defined on the basis of their relative in-place density
and fine grained soils on the basis of their consistency.
Example: Lean clay with sand, trace gravel, stiff (CL); silty
sand, trace gravel, medium dense (SM).
CONSISTENCY OF FINE-GRAINED SOILS
Unconfined Compressive
Strength, Qu, psf
Consistency
<
500
500 - 1,000
1,001 - 2,000
2,001 - 4,000
4,001 - 8,000
8,001 - 16,000
Very Soft
Soft
Medium
Stiff
Very Stiff
Very Hard
RELATIVE DENSITY OF COARSE-GRAINED SOILS:
N-Blows/ft
Relative Density
0-3
Very Loose
4-9
Loose
10-29
Medium Dense
30-49
Dense
50-80
Very Dense
80 +
Extremely Dense
PHYSICAL PROPERTIES OF BEDROCK
DEGREE OF WEATHERING:
Slight
Slight decomposition of parent material on
joints. May be color change.
Moderate
Some decomposition and color change
throughout.
High
Rock highly decomposed, may be extremely
broken.
HARDNESS AND DEGREE OF CEMENTATION:
Limestone and Dolomite:
Hard
Difficult to scratch with knife.
Moderately Can be scratched easily with knife.
Hard
Cannot be scratched with fingernail.
Soft
Can be scratched with fingernail.
Shale, Siltstone and Claystone:
Hard
Can be scratched easily with knife, cannot be
scratched with fingernail.
Moderately Can be scratched with fingernail.
Hard
Soft
Can be easily dented but not molded with
fingers.
Sandstone and Conglomerate:
Well
Capable of scratching a knife blade.
Cemented
Cemented
Can be scratched with knife.
Poorly
Cemented
Can be broken apart easily with fingers.
WERNER ELEMENTARY
FORT COLLINS, COLORADO
EEC PROJECT NO. 1122109
DECEMBER 2012
WERNER ELEMENTARY
FORT COLLINS, COLORADO
EEC PROJECT NO. 1122109
DECEMBER 2012
WERNER ELEMENTARY
FORT COLLINS, COLORADO
EEC PROJECT NO. 1122109
DECEMBER 2012
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-1
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 3"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
A-LIMITS
None
N/A
N/A
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
LL
PI
-200
(%)
PRESSURE
SWELL
% @ 500 PSF
10
6000
11.3
113.1
39
23
38.7
600 psf
0.1%
7
3000
22.3
8
4000
24.1
_ _
BASE 2"
1
_ _
SANDY LEAN CLAY (CL) / CLAYEY SAND (SC)
2
dark brown
very stiff to stiff
_ _
CS
3
_ _
4
brown
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-2
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 2"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
9
7000
9.0
109.5
5
3000
13.1
7
1000
19.3
A-LIMITS
LL
None
N/A
N/A
-200
PI
(%)
SWELL
PRESSURE
% @ 500 PSF
_ _
BASE 3"
1
_ _
CLAYEY SAND (SC)
2
brown
_ _
loose to medium dense
CS
3
with light gravels
_ _
sandy seam
_ _
4
SS
5
_ _
SANDY LEAN CLAY (CL)
6
brown
_ _
medium stiff
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-3
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 3.5"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
A-LIMITS
None
N/A
N/A
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
LL
PI
-200
(%)
PRESSURE
SWELL
11
5000
15.7
109.6
42
26
62.7
2000 psf
11
5000
22.7
3
1000
21.9
% @ 500 PSF
_ _
BASE 6.5"
1
_ _
SANDY LEAN CLAY (CL)
2
brown / grey
very stiff to medium stiff
_ _
CS
3
% @ 150 psf
2.0%
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-4
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 3"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
8
3000
18.0
103.9
10
6000
19.4
7
1000
17.5
A-LIMITS
LL
None
N/A
N/A
-200
PI
(%)
SWELL
PRESSURE
% @ 500 PSF
_ _
BASE 6"
1
_ _
SANDY LEAN CLAY (CL)
2
brown
_ _
stiff to very stiff
CS
3
_ _
4
_ _
brown / grey with calcareous deposits
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
traces of gravel
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-5
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 2.5"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
A-LIMITS
None
N/A
N/A
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
LL
PI
-200
(%)
PRESSURE
SWELL
9
5000
20.5
103.6
43
27
71.4
750 psf
12
4000
19.7
7
2000
24.2
% @ 500 PSF
_ _
BASE 5"
1
_ _
LEAN CLAY with SAND (CL)
2
brown
_ _
very stiff to stiff
CS
3
% @ 150 psf
1.1%
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-6
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 3"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
9
5000
19.1
105.6
5
3000
20.7
8
6000
18.6
A-LIMITS
LL
None
N/A
N/A
-200
PI
(%)
SWELL
PRESSURE
% @ 500 PSF
_ _
BASE 8.5"
1
_ _
SANDY LEAN CLAY (CL)
2
brown
_ _
very stiff to stiff
CS
3
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-7
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 2.5"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
A-LIMITS
None
N/A
N/A
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
LL
PI
-200
(%)
PRESSURE
SWELL
10
5000
17.4
107.3
40
26
74.0
1700 psf
9
5000
18.9
8
6000
17.6
% @ 500 PSF
_ _
BASE 7.5"
1
_ _
LEAN CLAY with SAND (CL)
2
brown
_ _
very stiff
CS
3
% @ 150 psf
3.1%
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-8
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 2.5"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
11
5000
19.1
108.3
9
5000
19.5
7
6000
17.5
A-LIMITS
LL
None
N/A
N/A
-200
PI
(%)
SWELL
PRESSURE
% @ 500 PSF
_ _
BASE 8"
1
_ _
SANDY LEAN CLAY (CL)
2
brown
_ _
very stiff
CS
3
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-9
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
LL
PI
(%)
PRESSURE
7
4000
20.1
106.7
43
27
81.6
<150 psf
11
7000
18.8
8
6000
16.3
SAND & GRAVEL 6"
_ _
LEAN CLAY with SAND (CL)
_ _
A-LIMITS
None
N/A
N/A
-200
SWELL
% @ 500 PSF
1
brown / grey
2
very stiff
_ _
CS
3
% @ 150 psf
None
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
WERNER ELEMENTARY SCHOOL - PAVEMENT EVALUATION
FORT COLLINS, COLORADO
PROJECT NO: 1122109
DATE:
DECEMBER 2012
LOG OF BORING B-10
RIG TYPE: CME45
SHEET 1 OF 1
FOREMAN: DG
AUGER TYPE: 4" CFA
SPT HAMMER: MANUAL
START DATE
FINISH DATE
SURFACE ELEV
SOIL DESCRIPTION
TYPE
ASPHALT 2.5"
WATER DEPTH
12/1/2012
12/1/2012
N/A
WHILE DRILLING
AFTER DRILLING
24 HOUR
D
N
QU
MC
DD
(FEET)
(BLOWS/FT)
(PSF)
(%)
(PCF)
9
3000
21.1
101.8
7
5000
22.2
10
5000
21.5
A-LIMITS
LL
None
N/A
N/A
-200
PI
(%)
SWELL
PRESSURE
% @ 500 PSF
_ _
BASE 9"
1
_ _
SANDY LEAN CLAY (CL)
2
brown / grey
very stiff
_ _
CS
3
_ _
4
_ _
SS
5
_ _
6
_ _
7
_ _
8
_ _
9
_ _
SS
10
_ _
BOTTOM OF BORING DEPTH 10.5'
11
_ _
12
_ _
13
_ _
14
_ _
15
_ _
16
_ _
17
_ _
18
_ _
19
_ _
20
_ _
21
_ _
22
_ _
23
_ _
24
_ _
25
_ _
Earth Engineering Consultants
SWELL / CONSOLIDATION TEST RESULTS
Material Description:
Dark Brown SANDY LEAN CLAY (CL) / CLAYEY SAND (SC)
Sample Location:
Boring 1, Sample 1, Depth 2'
Liquid Limit:
39
Beginning Moisture: 11.3%
Plasticity Index:
23
% Passing #200:
Dry Density: 116.2 pcf
Swell Pressure: 600 psf
38.7%
Ending Moisture: 19.6%
% Swell @ 500:
0.1%
10.0
8.0
Swell
6.0
4.0
Percent Movement
2.0
0.0
-2.0
Water Added
Consolidatio
-4.0
-6.0
-8.0
-10.0
0.01
0.1
Load (TSF)
Project:
Werner Elementary School - Pavement Evaluation
Location:
Fort Collins, Colorado
Project #:
Date:
1122109
December 2012
1
10
SWELL / CONSOLIDATION TEST RESULTS
Material Description:
Brown / Grey Sandy Lean Clay (CL)
Sample Location:
Boring 3, Sample 1, Depth 2'
Liquid Limit:
42
Plasticity Index:
Beginning Moisture: 15.7%
26
% Passing #200:
Dry Density: 107.4 pcf
Swell Pressure: 2000 psf
62.7%
Ending Moisture: 21.7%
% Swell @ 150:
2.0%
10.0
8.0
Swell
6.0
4.0
Percent Movement
2.0
0.0
Water Added
-2.0
Consolidatio
-4.0
-6.0
-8.0
-10.0
0.01
0.1
Load (TSF)
Project:
Werner Elementary School - Pavement Evaluation
Location:
Fort Collins, Colorado
Project #:
Date:
1122109
December 2012
1
10
SWELL / CONSOLIDATION TEST RESULTS
Material Description:
Brown LEAN CLAY with SAND (CL)
Sample Location:
Boring 5, Sample 1, Depth 2'
Liquid Limit:
43
Plasticity Index:
Beginning Moisture: 20.5%
27
% Passing #200:
Dry Density: 110.9 pcf
Swell Pressure: 750 psf
71.4%
Ending Moisture: 20.9%
% Swell @ 150:
1.1%
10.0
8.0
Swell
6.0
4.0
Percent Movement
2.0
0.0
Water Added
-2.0
Consolidatio
-4.0
-6.0
-8.0
-10.0
0.01
0.1
Load (TSF)
Project:
Werner Elementary School - Pavement Evaluation
Location:
Fort Collins, Colorado
Project #:
Date:
1122109
December 2012
1
10
SWELL / CONSOLIDATION TEST RESULTS
Material Description:
Brown LEAN CLAY with SAND (CL)
Sample Location:
Boring 7, Sample 1, Depth 2'
Liquid Limit:
40
Plasticity Index:
Beginning Moisture: 17.4%
26
% Passing #200:
Dry Density: 116.5 pcf
Swell Pressure: 1700 psf
74.0%
Ending Moisture: 20.6%
% Swell @ 150:
3.1%
10.0
8.0
Swell
6.0
4.0
Percent Movement
2.0
0.0
Water Added
-2.0
Consolidatio
-4.0
-6.0
-8.0
-10.0
0.01
0.1
Load (TSF)
Project:
Werner Elementary School - Pavement Evaluation
Location:
Fort Collins, Colorado
Project #:
Date:
1122109
December 2012
1
10
SWELL / CONSOLIDATION TEST RESULTS
Material Description:
Brown / Grey LEAN CLAY with SAND (CL)
Sample Location:
Boring 9, Sample 1, Depth 2'
Liquid Limit:
43
Plasticity Index:
Beginning Moisture: 20.1%
27
% Passing #200:
Dry Density: 107.7 pcf
Swell Pressure: <150 psf
81.6%
Ending Moisture: 22.5%
% Swell @ 150:
None
10.0
8.0
Swell
6.0
4.0
Percent Movement
2.0
0.0
Water Added
-2.0
Consolidatio
-4.0
-6.0
-8.0
-10.0
0.01
0.1
Load (TSF)
Project:
Werner Elementary School - Pavement Evaluation
Location:
Fort Collins, Colorado
Project #:
Date:
1122109
December 2012
1
10
RESISTANCE R-VALUE & EXPANSION PRESSURE OF
COMPACTED SOIL - ASTM D2844
Werner Elementary School - Pavement Evaluation
PROJECT:
PROJECT NO. 1122109
5400 Mail Creek Lane - Fort Collins, Colorado
LOCATION:
DATE Dec. 2012
SANDY LEAN CLAY (CL) - AASHTO: A-6
MATERIAL DESCRIPTION:
Composite Subgrade Sample - Borings B-1 thru B-6 @ 1 - 4-feet
SAMPLE LOCATION:
39
17
PLASTICITY INDEX:
%PASSING #200:
R-VALUE LABORATORY TEST RESULTS
2
TEST SPECIMEN NO.
1
100
150
COMPACTION PRESSURE (PSI)
110.8
112.0
DENSITY (PCF)
18.5
17.0
MOISTURE CONTENT (%)
0.00
0.00
EXPANSION PRESSURE (PSI)
135
133
HORIZONTAL PRESSURE @ 160 PSI
2.53
2.52
SAMPLE HEIGHT (INCHES)
229.3
363.4
EXUDATION PRESSURE (PSI)
10.6
12.3
UNCORRECTED R-VALUE
10.6
12.3
CORRECTED R-VALUE
LIQUID LIMIT:
R-VALUE @ 300 PSI EXUDATION PRESSURE =
11
61.5
3
150
112.9
16.5
0.00
128
2.52
507.7
15.4
15.4
RESILIENT MODULUS, PSI =
3,681
100
90
80
70
R-Value
60
50
40
30
20
10
0
0
50
100
150
200
250
300
350
Exudation Pressure, PSF
400
450
500
550
600
Poudre School District