ADDENDUM NO. 1
BOSTON ECONOMIC DEVELOPMENT AND INDUSTRIAL CORPORATION
"PARCEL V-1 BULKHEAD AND PIER 5 COFFERDAM REPAIRS"
RAYMOND L. FLYNN MARINE PARK
EDIC PROJECT NO. 1287
April 22, 2016
The attention of bidders submitting proposals for the above referenced project is called to the
following Addendum to the plans (Drawings) and specifications. The items set forth herein,
whether of omission, addition, substitution, or other change, are all to be included in, and form a
part of the Proposed Contract Documents for the work.
Inclusion of this Addendum must be acknowledged by inserting its number on Page FGB-1 of
the document entitled "Form for General Bid". Failure to acknowledge any and all addenda in
the above specified bid form may be cause for rejection of the bids by the Owner on the grounds
that it is not responsive.
The addendum consists of four (4) pages, and two (2) attachments.
ADDENDUM ITEMS
1. RESPONSE TO QUESTIONS
QUESTION: Drawing 13 is referenced for calculation of sheet pile penetrations, there is no
data on sheet 13 which would allow the contractor to correlate the datum referenced to the
new work datum and allow for a calculation of sheet pile tip. Please provide the datum cross
reference information or provide a minimum tip or a sheet pile length.
RESPONSE: The top of the existing curb is Elevation 116.5 referencing the datum on
Drawing 13
QUESTION: The specifications indicate that DCAMM Certification is a special condition
requirement. Is DCAM certification an absolute requirement to bid on this Project?
RESPONSE: DCAMM Certification is not required for this Project.
QUESTION: Drawing sheet 8 referencing the Flap Gate detail; the detail shows a 15” drain
and an 8” outfall, which is correct?
RESPONSE: An 8” diameter outfall and gate are required.
QUESTION: There are several manhole covers visible in the street immediately behind the
V-1 bulkhead within the excavation limits, please confirm that these are to be removed.
Parcel V-1/Pier 5 Bulkhead Repairs
EDIC Project No. 1287
Addendum No. 1
PAGE 1 of 4
RESPONSE: These structures shall be raised to meet the proposed finished grade.
QUESTION: Special provisions for paving indicate that pavement base is paid under the
paving item “as specified herein…”. The base that is to be paid under the paving item is not
defined within the specification, therefore please clarify which item the 6” Granular Fill
Aggregate Sub-base and 6” Sand Gravel Fill Aggregate Base course is to be paid under.
RESPONSE: The gravel base and sub-base shall be included under Item No.
02513-1 BITUMINOUS PAVING. See Addendum Item 2.4 below.
QUESTION: Please confirm that structural fill under sidewalks and is paid under item 22201 Imported Borrow.
RESPONSE: The fill shall be paid for under Item 03301-1. See Addendum Item
3.2 below.
QUESTION: What item is the granite curb and appurtenances paid under?
RESPONSE: The curb and appurtenances shall be paid for under Item 03301-1.
See Addendum Item 3.2 below.
QUESTION: Borings are essential for designing the falsework; are there any borings
available for this purpose?
RESPONSE: Existing subsurface boring data is provided in the technical
specifications as Attachment C to Section 01000.
QUESTION: Is the intent of the design that the V-1 bulkhead be concrete filled before being
backfilled?
RESPONSE: The Contractor will likely need to backfill and place concrete
concurrently as to not overstress the existing bulkhead. Should the Contractor
elect to place the concrete prior to backfilling, no additional payment will be
made for concrete which enters the excavation area slated for soil backfilling.
QUESTION: What is the maximum load anticipated by the designer for the proposed tie rod
extension?
RESPONSE: As per Section 05500 – Miscellaneous Metals, subsection 1.06B,
“Tensile testing of two (2) tie rod extensions will be completed to confirm an
allowable tensile capacity of 60 kips on the tie rod extensions…”
Parcel V-1/Pier 5 Bulkhead Repairs
EDIC Project No. 1287
Addendum No. 1
PAGE 2 of 4
2. DRAWINGS
Item 2.1: Clarification: Drawing 6.0, Section B, the note states “existing steel sheet piles cut at
mudline”. The existing sheet piles have been cut to facilitate the installation of the existing
drainage and do not need to be cut for this project.
Item 2.2: Clarification: Drawing 7.0, note states “move all jersey barriers to storage area at 3
Dolphin Way, Boston, MA”. The barriers shall be relocated by the Contractor and stored along
the fence, as coordinated with the EDIC and as shown in the attached aerial locus map for 3
Dolphin Way.
Item 2.3: Drawing 5.0, Section A: Delete note: Demolish existing concrete pile cap and steel
wale.
Item 2.4: Drawing 6.0, Section A: Replace note: ‘Demo and remove existing reinforced
concrete pile cap except at drainage headwall (sta 1+10 to 1+30)” with “Demo and remove
existing reinforced concrete pile cap to facilitate the installation of the proposed reinforced
concrete sidewalk, full length, up to 12” deep.”
Item 2.5: Clarification: Drawing 5.0, Section A: The cross section indicates a 6” thick granular
sub-base course and 6” thick sand gravel fill aggregate base course. It is the intent of the
contract to reuse the existing soils as the base and sub-base courses to the extent possible, and to
supplement the with the material shown as required to achieve the proposed finished grades.
3. SPECIFICATIONS
Item 3.1: Form for General Bid, Item 03301-1 Concrete Sidewalks: Quantity changed from
“46cy” to “580 lf”. Replace Page FGB-2 with attached “FGB-2a”
Item 3.2: Section 03301 – Site Concrete: Replaced: Part 4 with:
PART 4
MEASUREMENT AND PAYMENT
4.01
MEASUREMENT
A.
ITEM NO. 03301-1 CONCRETE SIDEWALKS shall be measured by the linear foot of concrete
sidewalk installed complete as measured by the Engineer.
4.02
PAYMENT
A.
CONCRETE SIDEWALKS shall be paid for under Item 03301-1, which price shall include full
compensation for preparation, demolition and removal, cleaning, concrete forming, reinforcement,
concrete bonding agent, concrete placement, curing, jointing, ADA Concrete Ramps, structural
base fill, granite curbing, curb cuts, the furnishing of all labor, materials, tools and equipment, and
all other incidental work necessary to complete the work under this item, as shown on the
Drawings, and as herein specified.
B.
Payment Items
ITEM
Parcel V-1/Pier 5 Bulkhead Repairs
EDIC Project No. 1287
DESCRIPTION
UNIT COST
Addendum No. 1
PAGE 3 of 4
03301-1
CONCRETE SIDEWALKS
LINEAR FOOT
Item 3.3: Clarification: Form for General Bid: The Contractor shall assume the following
quantities when preparing their bid. The bid items and pay quantities will remain as shown in
the FGB, and the actual construction quantities may differ from the amounts shown below. The
following values are provided for estimating purposes only, and do not include proposed pile cap
concrete:
Item
Concrete Annulus Wall: Parcel V-1
Concrete Annulus Wall: Pier 5
CLSM Fill: Pier 5
Approx. Quantity
570 cy
800 cy
225 cy
THE BID DUE DATE HAS NOT CHANGED AS A RESULT OF THIS ADDENDUM
END OF ADDENDUM NO. 1
Parcel V-1/Pier 5 Bulkhead Repairs
EDIC Project No. 1287
Addendum No. 1
PAGE 4 of 4
Ref: Google maps, April 2016
PARCEL V-1/PIER 5
3 DOLPHIN WAY
Parcel V-1
1/Pier 5 Bulk
khead Repairss
EDIC Projeect No. 1287
Addendum No. 1
ATTA
ACHMENT N
NO. 1
Item
No.
Description
Qty
02513-2
CONCRETE BOLLARD
1 EA
02584-1
DRAINAGE CATCH BASIN
2 EA
02640-1
FIRE HYDRANT
1 EA
03300-1
CONCRETE ANNULUS
WALL – PARCEL V-1
1 LS
03300-2
CONCRETE ANNULUS
WALL – PIER 5
1 LS
03301-1
CONCRETE SIDEWALKS
580 LF
05501-1
CHAIN LINK FENCE
175 LF
05521-1
METAL RAILING
240 LF
16000-1
ELECTRICAL
Unit
Price
Unit Price in
Written Words
Amount
1 LS
TOTAL:
$
TOTAL Contract Price for all work to be entered here and in Paragraph C on page FGB-1.
$
(Written in Words)
(Figures)
D. Each Bidder must understand that the quantities presented in
the Schedule of Bid Prices are approximate and the AWARDING
AUTHORITY
does
not
guarantee
the
accuracy
or
the
completeness thereof.
These estimated quantities are given
solely as a basis for the comparison of bids. The Authority
does not expressly or by implication agree that the actual
amount of work will correspond therewith, and reserves the
right to increase or decrease the amount of work that may be
deemed necessary or expedient to the Authority. An increase
or decrease in any quantity shall not be regarded as cause
for an increase or decrease in the particular unit price,
nor in the time allowed for the completion of the work.
Each Bidder must take his own examination and estimates of
FGB-2a