C. CASTINGS:
L.
Cast iron frames, grates and covers shall be as specified. The frames and covers
shall be set by the Contractor to conform accurately to the grade of the finished
pavement, existing ground surface, or as indicated on the drawings. Frames shall be
adjusted to meet the street surface.
SEWER MANHOLE ACCESSORIES:
A. Gasket materials shall be top grade (100% solids, vulcanized) butyl rubber and shall meet or
exceed AASHTO M-198.
B. Couplings at the manhole-pipe interface shall be made with a rubber seal system (with or
without stainless steel straps) meeting the requirements of ASTM C923 and recommended
for this type of connection.
Requirements in ASTM C478 with the Contractor bearing all testing costs.
2.02 BRICK MATERIALS:
A. _ Brick shall be sound, hard, and uniformly burned brick, regular and uniform in shape and
size, of compact texture, and satisfactory to the Engineer. Bricks shall comply with ASTM
C32, for Grade SS, hard brick, except that the mean of five tests for absorption shall not
exceed 8 percent by weight.
B. Rejected brick shall be immediately removed from the work and brick satisfactory to the
Engineer substituted.
5. No more than two lift holes may be cast or drilled in each section.
6. The date of manufacture and the name or trademark of the manufacturer shall be
clearly marked on the inside of each precast section.
7. Acceptance of the sections will be on the basis of material tests and inspection of the
completed product.
Connectors Between Reinforced Concrete
Manhole Structures and Pipes
ASTM C1244 Standard Test Method for Concrete Sewer Manholes by the
Negative Air Pressure (Vacuum) Test.
American Association of State Highway and Transportation Officials (AASHTO)
AASHTO M198Joints for Circular Concrete Sewer and Culvert Pipe Using
Flexible Watertight Gaskets
Occupational Safety and Health Administration OSHA 29 CFR 1910.27
Fall Prevention Protection
SECTION 02631
PRECAST MANHOLES
PART 1 - GENERAL
1.01 WORK INCLUDED:
A. This Section covers all precast sewer manholes complete, including, but not limited to,
bases, walls, cones, mortar, inverts, frames and covers.
B. Work shall comply with City of Nashua Standard Specifications for Sewers and Drains,
which are hereby incorporated by reference.
1.02 RELATED WORK:
A. Section 02300, EARTHWORK.
B. Section 02745, ROAD RESTORATION
1.03 SYSTEM DESCRIPTION:
1. Building connections shall be installed using the same construction and pipe joining
techniques as specified in Section 02085 POLYVINYL CHLORIDE GRAVITY PIPE
AND FITTINGS.
2. In general, connections shall be carried only to the property line. The end of the pipes
shall be closed with PVC stoppers jointed in place to ensure against infiltration into the
sewer line.
SECTION 02530
BUILDING CONNECTIONS AND DROP CONNECTIONS
PART 1 - GENERAL
1.01 WORK INCLUDED:
A. This Section covers furnishing of all materials and labor to construct building sewer
connections and drop connections as indicated on the Drawings, and as herein specified.
B. _ Final location of building connections shall be determined in the field by the Engineer.
1.02 RELATED WORK:
A. Section 02300, EARTHWORK
B. Section 02631, PRECAST MANHOLES
C. Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
D. Where the Owner is paying directly for Uniformed Officers, the Contractor shall be
responsible for payment of the wages paid to the Uniformed Police Officers if the Contractor
fails to cancel the services of the Uniformed Officers in accordance with 2.01.B and
2.01.C above.
PART 3 - EXECUTION
3.01 OPERATION:
A. Contractor shall provide barricades, barrier fences, traffic signs, and other traffic control
devices as shown on the plans, required by the City’s Traffic Department, or as directed by
SECTION 02451
FLAGGERS AND UNIFORMED OFFICERS FOR TRAFFIC CONTROL
PART 1-GENERAL
1.01
A.
1.02
1.03
A.
WORK INCLUDED:
This Section covers the provisions for furnishing Flaggers and Uniformed Police Officers
for Traffic Control and Maintenance of Traffic as described in Section 01110 CONTROL
OF WORK AND MATERIALS, to direct traffic through or around work as shown on the plans
or as ordered by the Engineer.
