ROAD COMMISSION FOR OAKLAND COUNTY
SPECIAL PROVISION
FOR
ADJUSTMENT AND RECONSTRUCTION OF PUBLIC UTILITY STRUCTURES
RCOC/DESIGN: AB
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REV: 3/11/2016
a. Description
This work shall consist of adjusting, reconstructing, and installing new waterproof covers on
structures to maintain the integrity of these structures and to keep water infiltration to an
absolute minimum. This work shall be done in accordance with Section 403 of the 2012
Michigan Department of Transportation Standard Specifications for Construction, this
specification, and any additional requirements from the following organizations:
1. Local Municipal Department of Public Works (LM-DPW)
A. Waterford Township Department of Public Works (WTDPW)
All work is to be done in accordance with the rules outlined in Chapter 17 of the
Code of Ordinances of the Charter Township of Waterford, Michigan, included
hereinafter.
B. City of Novi
In addition, work must be in accordance with the current Oakland County Water
Resources Commission (OCWRC), and the City of Novi Standards. In the event that
these specifications conflict with those of the Owner’s standards, the permit agency,
or agency controlling the right-of-way, the more stringent requirements will govern.
2. Oakland County Water Resources Commission (OCWRC)
In addition, work must be in accordance with the current Oakland County Water
Resources Commission (OCWRC) standards.
3. Other Public Utilities such as Gas, Telecommunication, and Electric.
In addition, work must be in accordance with...
b. Materials
LM-DPW structure covers shall be as specified on the details in the plans.
Materials used in the “adjustment” or “reconstruction” of manholes shall be the same as those
used in the initial construction unless otherwise approved by the LM-DPW.
1. City of Novi
Precast reinforced concrete sections shall, at a minimum, conform to ASTM C478.
Brick shall, at a minimum, conform to ASTM C32, Grade MS or ASTM C55, Grade U-I.
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Mortar for laying brick or pointing of joints and for plastering outside of structures shall
be composed of one (1) part Type II masonry cement and two and one-half (2 ½) parts
masonry sand.
Water for concrete and mortar shall be clean and fresh, free from oil, acids and organic
matter.
Manhole steps shall be steel, encased with polypropylene plastic, equivalent to M.A.
Industries, Inc., PSI1 for pre-cast wells and PS1-B for brick wells.
Radial concrete block shall be Grade N-1 conforming to ASTM C139.
Other materials shall be as specified under subsection 403.02 of the MDOT standard
specifications except that City of Novi and OCWRC Structure Covers, if called for, shall
be as specified on the Governing Agency’s details in the plans with the governing
agency’s name cast in the lid as shown.
c. Construction
1. Permit and Inspection Requirements
All alterations to manholes owned and operated by the LM-DPW shall have LM-DPW
full-time inspection. Contractors shall have in their possession, 48-hours prior to start of
construction, an inspection permit for the proposed manhole alterations issued by the
LM-DPW. Contractors must also have a surety bond and a cash deposit bond with the
LM-DPW. Also before start of work representatives of the LM-DPW, RCOC, and the
Contractor shall meet and collectively inspect each structure prior to beginning work and
make a determination as to the type of treatment that is necessary.
For more details and for financial requirements refer to the Special Provision for Permits
and Inspection Fees
2. Requirements for Changing the Elevation of Manhole Covers
In no case shall the adjusting rings or total brickwork (including existing brick) exceed
15”. All alterations shall be done in a workman-like manner and shall be completely
watertight.
A. Adjusting Drainage Structure - “Adjustment”
Adjusting a manhole cover applies when the elevation is changed up or down 6
inches or less while within the limits as follows.
(1) To increase the rim elevation of a manhole cover between the limits of 0” and
15”, measured from the top of the cone or corbel section to the bottom of the
cover frame, shall be done with concrete adjustment rings, or in the case of older
brick-type manholes, with brickwork.
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(2) To decrease the rim elevation of a manhole cover within the limits of existing
adjusting rings or brickwork, remove the adjusting ring(s) or brick.
B. Additional Depth of Adjusting Structure - “Reconstruction”
Reconstruction of a manhole cover applies when the elevation is changed up or
down more than 6 inches or any change that is outside of the limits of “adjustment”
To decrease the rim elevation of a manhole cover beyond the limits of existing brick
or adjusting rings, or increase the rim elevation of a manhole cover beyond the limits
of an “adjustment”, change the elevation of the cone or tapered section.
(1) Pre-cast manholes are reconstructed by removing cone and/or straight section(s)
and replacing with a section(s) of such length that the manhole cover will be at
the correct elevation, or can be raised to the correct elevation by the addition of
adjusting rings. In the case of older brick-type top sections, replace with
brickwork. The maximum height of the chimney shall be 15 inches as measured
between the top of the corbel section to the underside of the frame.
(2) Brick manholes are reconstructed by removing all the brick courses that make up
the cone or tapered section. By increasing or decreasing the height of the
brickwork in the straight section of the manhole, the rebuilt brick cone section will
position the manhole cover at the correct elevation or it can be raised to a
maximum height of 15” by adjusting brickwork placed on the cone.
Plaster all reconstructed exterior masonry surfaces with MDOT Type R2 cement
mortar, 0.5 inch thick to assure complete water tightness. When reconstructing
manhole maintain 16 inch step spacing.
3. Criteria for Determining the Elevation of a Manhole Cover
The LM-DPW shall approve the final elevation in the field.
A. Final adjustment of DPW structures shall be made prior to placing the top course of
pavement.
B. Covers of manholes located in the pavement shall be placed at the existing or
proposed pavement grade.
C. Covers of manholes located in the gravel shoulder of a roadway shall be placed at
an elevation of at least 6 inches below the top of the edge of the shoulder. Place
shoulder material over structure cover.
D. Covers of manholes located in shoulders that are to be sodded or grassed, shall be
placed at the finished earth grade of the grassed shoulder.
E. Covers of manholes located in ditches shall be placed at the elevation of the top of
the adjacent edge of pavement.
F. Covers of manholes located outside of the road and ditch area shall be at the
existing earth grade and readily visible at all times.
G. Covers in flood-prone areas shall be at an elevation 12” above the highest known
level of standing water.
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4. Backfill of Structures
All structures within the roadway shall be backfilled with granular material class II up to
the subgrade elevation, or to an elevation determined by the Engineer. After final
adjustment of the structure to the proposed elevation, the void area around the structure
shall be completely backfilled with sand-aggregate-water-cement mixture as directed by
the Engineer, to provide a stable base around the structure. A minimum 24 hours cure
time shall be provided prior to beginning paving operations in these areas.
5. Waterford Township Department of Public Works
A. Adjustment Requirements
On existing pre-cast structures, the increase in elevation of the manhole shall be allowed
up to a maximum of 8 inches as measured from the top of the cone to the bottom of the
frame. Adjustment shall be made by means of incremental thickness of concrete
adjustment rings.
On existing brick or block structures, the increase in elevation of the manhole shall be up
to a maximum of 8 inches as measured from the top of the corbel section to the bottom
of the frame. Adjustment shall be made by the construction of rows of brickwork.
On existing pre-cast or brick structures, a decrease in elevation by adjustment is limited
to the removing of layers of existing concrete adjustment rings or brick work down to the
top of the pre-cast cone or corbel section.
The elevation change for either adjusted or reconstructed structures shall be such that
the distance from the top of the casting to the first step shall not exceed 21 inches.
Where the work requires changes in height either in excess of 6 inches or decrease
beyond the limits of existing concrete rings or brickwork, the work shall be paid for as
additional depth of adjusting structure.
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B. Additional Depth of Adjusting Structure Requirements
The increase in elevation of a structure cover beyond the 6 inch limits detailed above, or
decrease in elevation beyond the limits of existing concrete adjustment rings or
brickwork, shall be done by changing the elevation of the cone or the tapered section.
Pre-cast type manholes shall be reconstructed by removal of the cone and/or straight
sections and replacement of the cone and/or straight section of such length that the
manhole cover will be at the correct elevation or can be raised to the correct elevation by
the addition of adjusting rings. In the case of older brick-type top sections, the final
adjustment can be made with brickwork. In either case, the limit of such adjustment
shall not exceed 8 inches.
Brick-type manholes shall be reconstructed by removing all brick courses that make up
the cone or tapered section. By changing the height of the brickwork in the straight
section of the manhole, the rebuilt cone section will position the structure cover at near
the finished grade. The adjustment above the top of cone or tapered sections shall not
exceed 8 inches. When a structure of either type is reconstructed, 16 inch step spacing
shall be observed.
All exterior masonry surfaces shall be plastered with a 1:3 cement mortar, 0.5 inches
thick to assure complete water tightness.
C. Waterford Township DPW Structure Covers
Any structure that is scheduled to be worked on, whether a sanitary sewer manhole or a
watergate manhole, shall have a waterproof cover installed on it prior to acceptance. If
the structure does not currently have a waterproof cover on it, as determined by the
engineer and the DPW, then either an East Jordan 1040 ZPT or Neenah R-1915-G or
approved equal frame and cover shall be provided by the contractor. For watergate
manhole covers, the lid shall have cast or stamped on it the description of "Dept. of
Water Supply."
Structure cover shall be inspected and poor condition structures hall be replaced as
directed by the Engineer.
d. Measurement and Payment
The completed work, as described, will be measured and paid for at the contract unit price for
the following pay item and includes equipment, labor and materials to complete the items:
Pay Item
Pay Unit
DPW Structure Cover, Adj, Case __ .....................................................................................Each
DPW Structure, Adj, Add Depth .............................................................................................Foot
DPW Structure Cover, [Name], [Type] ..................................................................................Each
DPW Structure, Temp Lowering ............................................................................................Each
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1. Drainage Structure Covers. When new covers are placed on existing structures, the
Engineer will measure and the Department will pay for DPW Structure Cover, Adj,
Case __ in addition to the new cover.
The unit price for DPW Structure Cover, Adj, Case 1 includes the cost of the following:
A. Sawcutting existing pavement, curb, and curb and gutter;
B. Adjusting the cover up or down, no greater than 6 inches; and
C. Removing and replacing pavement adjacent to the adjusted cover.
The Department will pay separately for removing and replacing curb and gutter adjacent
to the adjusted structure. The Department will only pay for DPW Structure Cover, Adj,
Case 2 for structure adjustments located outside existing pavement, curb, and curb and
gutter or where the pavement, curb, or curb and gutter are to be removed as part of the
project and will ultimately be outside of pavement.
The unit price for DPW Structure Cover, Adj, of the case required includes the cost of
repairs for uniform contact of temporary steel plate to the top of structures.
The Engineer will measure DPW Structure, Adj, Add Depth, of the required diameter
and depth, beginning 6 inches from the level of the existing structure, in the direction of
adjustment, to the limit of the additional adjustment depth. If the contract includes a pay
item for DPW Structure, Adj, Add Depth, the contract will also include a pay item for
Structure Cover, Adj, of the case required. The unit price for DPW Structure, Adj, Add
Depth includes the cost of drainage structure taps, within the limits of the adjustment.
The Department will pay for drainage structure taps outside the limits of the adjustment
as Dr Structure, Tap. The Department will pay for taps to existing sewers as Sewer Tap,
of the size required, in accordance with subsection 402.04.
2. DPW Structure, Temporary Lowering. The unit price for DPW Structure, Temp
Lowering includes the cost of the following:
A. Match marking;
B. Removing, salvaging, and transporting castings to and from site;
C. Storing the existing structure castings;
D. Plating the structure;
E. HMA patching; and
F. Removing the plate and HMA patching materials for final adjustment.
The Department will pay separately for the final adjustments to DPW structures. The unit
price for DPW Structure Cover, Adjust, Case 1 includes the cost of removing
pavement to lower the structure. The cost of repairs is included in unit price for the
related DPW structure adjustment pay item.
The cost of obtaining permits and inspection fees shall be considered as part of the necessary
work, and be paid for in accordance with the Special Provision for Permits and Inspection Fees
contained in this proposal.
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For structures within the pavement surface area, the contractor will be required to remove the
frame and cover and temporarily plate the top of structures when the structure frame will conflict
with the proposed surface crown of gravel base. The placing and removing of the plates will not
be paid for separately, but shall be included in the unit price.
Existing structure covers that have been replaced are to be disposed of in a legal manner off the
project by the Contractor included in the structure adjustment pay items.
When new covers are required on an existing structure that does not require adjustment or
reconstruction, DPW Structure Cover, Adj, of the case required will paid for in addition to the
new cover.
DPW Structure Cover, [Name], [Type] includes the cost obtaining a frame and cover that
meeting the specifications of LM-DPW and the details shown in the plans.
e. Charter Township of Waterford Department of Public Works - References
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CODE OF ORDINANCES
CHARTER TOWNSHIP
OF
WATERFORD, MICHIGAN
Codified through April 11, 2011.
CHAPTER 17 WATER AND SEWERS
ARTICLE II INSPECTIONS
Sec. 17-026. Short title.
This article shall be known and cited as the "Public Water and Sewer Facilities Inspection
Ordinance." It shall be deemed sufficient in any action for enforcement of the provisions hereof
to define the same by such title, and reference to the number hereof.
(Comp. Ords. 1986, § 26.201)
Sec. 17-027. Statement of purpose.
The purpose of this article is hereby declared to be:
(1) To prevent the contamination and blockage of public water and sanitary sewer systems.
(2) To require permits by public works contractors on any adjustment, reconstruction, relocation, or
alteration of certain facilities.
(3) To require minimum standards of repair and relocation by contractors.
(4) To provide for Township inspections, performance bonds and reserve funds.
(5) To establish fee schedules for permits and inspections.
(Comp. Ords. 1986, § 26.202)
Sec. 17-028. Definitions.
The following definitions shall be applicable in the interpretation of this article:
Contractor means one who contracts or is a party to a contract to perform work.
Curbstop and box means a valve on the water service line, with a round telescoping tube that
allows operation of the valve without excavation.
Hydrants means a discharge pipe with a valve and nozzle from which water may be drawn from
the water main.
Sanitary sewer manholes means a concrete, brick, or block structure that provides access to
the sewer for cleaning and maintenance.
Valve boxes means a round metal telescoping tube that allows operation of the valve without
excavation.
Water gate wells means a concrete, brick or block structure that houses a valve on the water
main.
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(Comp. Ords. 1986, §§ 26.220--26.226)
Cross references: Definitions and rules of construction generally, § 1-002.
Sec. 17-029. Plan review.
The engineering department shall first review and approve all plans and specifications
submitted by the design engineer or the governmental organization. In the event the plans and
specifications do not adequately insure for the proper protection, the adjustment and delineation
of Township operated utilities, the engineering department shall reject such plans. Rejected
plans shall be returned to the applicant for correction.
(Comp. Ords. 1986, § 26.230)
Sec. 17-030. Permit and inspection fee.
(a) Any contractor who shall have contracted to perform work within the public right-of-way or
easements for public water and sewer facilities shall, prior to commencing the job, obtain a
permit from the department of public works in all cases involving the adjustment,
reconstruction, relocation or alteration of water gate wells, valve boxes, fire hydrants, curbstops
or sanitary sewer manholes. An inspection fee shall accompany the application. The
amount of the inspection fees shall be established periodically by resolution of the Township
Board.
(b) Prior to starting any work for which a permit is required herein, the contractor shall notify the
water and sewer department at least twenty-four (24) hours in advance of a time designated
for inspection.
(Comp. Ords. 1986, § 26.240; Ord. of 12-11-95)
Sec. 17-031. Performance bond.
The contractor shall provide, prior to a permit being issued, a surety bond for each project in the
amount of five thousand dollars ($5,000.00), as security for the faithful performance of the work
in accordance with the plans, specifications, and department standards. The surety bond may
not be cancelled by the contractor or surety without ten (10) days written notice to the Township
of the intent to cancel or revoke the conditions of the bond.
(Comp. Ords. 1986, § 26.250)
Sec. 17-032. Reserve fund.
The contractor shall provide, prior to any permits being issued, a cash reserve fund in the
amount of two thousand dollars ($2,000.00) for each project to the Township which shall be
escrowed in a noninterest bearing bank, or savings and loan account. The Township may
invade this fund from time to time for emergency work, such as blockage of sewer or waterlines,
and/or other work as may be deemed necessary due to job difficulties. The balance of the
reserve fund for each project less moneys expended by the Township, shall be returned at such
times as the project has final approval by the water and sewer department.
(Comp. Ords. 1986, § 26.260; Ord. of 12-11-95)
Sec. 17-033. Correction of defects or infiltration to system.
In the event of blockage or clogging of the sewer system, or blockage of access to the sewer
system, or any part thereof, including any structure which is a part thereof, caused by any action
performed by any property owner or his agent, the Township may, in its sole discretion, enter
onto the subject property and proceed to correct the defect without notice to such property
owner or his agent. All moneys expended and reasonable costs for labor performed by the
Township shall be a lien against the real property involved and shall be reported to the
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assessing officer of the Township who shall assess the cost against the property on which the
blockage or clogging or blockage of access to the sewer system occurred. The owner or parties
of interest in whose name the property appears upon the last local tax assessment records shall
be notified of the amount of such cost by first class mail at the address shown on the records. If
he fails to pay the same within thirty (30)
days after mailing by the assessor of the notice of the amount thereof, the assessor shall add
the same to the next tax roll of the Township and the same shall be collected in the same
manner in all respects as provided by law for the collection of taxes.
(Comp. Ords. 1986, § 26.270)
Sec. 17-034. Injunctive relief; nuisance per se.
Any violation of this article is hereby deemed to be a nuisance per se and shall be enforceable
through the bringing of appropriate action for injunctive relief in any court having jurisdiction.
(Comp. Ords. 1986, § 26.271)
Sec. 17-035. Miscellaneous standards.
(a) All sanitary sewer manholes shall be provided with "bolted waterproof" covers in accordance
with current standards. All alterations, replacements, or adjustments of a gate well frame and
cover will be in accordance with current Township standards. Any valve box found to be
damaged or with missing parts shall be replaced with new material in accordance with current
standards. Curb boxes damaged by the contractor shall be replaced with new material in
accordance with current standards.
(b) The county department of public works requirements as currently in effect for changing the
elevation of manhole structures shall govern in all cases.
(Comp. Ords. 1986, § 26.280)
Secs. 17-036--17-050. Reserved.