SECTION 02252
SUPPORT OF EXCAVATION
PART 1 - GENERAL
1.01 WORK INCLUDED:
A. This section of the specification covers sheeting and bracing for support of
excavations. The requirements of this section shall also apply, as appropriate, to other
methods of excavation support and underpinning which the Contractor elects to use to
complete the work.
for approval prior to testing. Complete dimensions of the gauge for each diameter of pipe
to be tested shall be in accordance with ASTM D3034.
2. Any section of pipe found to exceed 7.5 percent deflection shall be deemed a failed pipe
and shall be excavated and replaced by the Contractor at his own expense.
END OF SECTION
2019 Sewer Replacement Project Polyvinyl Chloride Gravity Pipe and Fittings
Nashua, NH 02085-5
3.02
3.03
C.
pipeline at the joints. Where there is evidence of water or soil entering the pipeline, connecting
pipes, or structures, the defects shall be repaired to the satisfaction of the Engineer.
The Contractor shall build a tight bulkhead in the pipeline where new work enters an existing
sewer. This bulkhead shall remain in place until its removal is authorized by the Engineer.
flexible repair couplings, or approved equal, of the appropriate size to fit the external diameter
of each pipe.
SEWER AND DRAIN PIPE BEDDING AND SAND BLANKET:
Sewer pipe bedding and sand blanket shall be as specified in Section 02300 EARTHWORK.
DUCTILE IRON PIPE:
Ductile iron pipe shall be used at sewer/water line crossings and conform to AWWA
C151/A21.50 & 51, Class 52.
PART 3 - EXECUTION
3.01
A.
INSTALLATION:
B. | New Hampshire Code of Administrative Rules, Env-Wq 704, Design of Sewerage.
1.04 SUBMITTALS:
In accordance with requirements of the General Specifications submit six (6) sets of
manufacturer's literature of the materials of this section shall be submitted to the Engineer for
review.
PART 2 - PRODUCTS
2.01 MATERIALS:
A. PVC NON-PRESSURE SEWER PIPE:
SECTION 02085
POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
PART 1 -GENERAL
1.01 WORK INCLUDED:
This section covers the furnishing and installation of Polyvinyl Chloride (PVC) pipe and
fittings for sewer mains, sewer service connections and drain laterals to catch basins, as
indicated on the drawings and as specified herein.
RELATED WORK:
Section 01330, SUBMITTALS
Section 02300, EARTHWORK
Section 02252, SUPPORT OF EXCAVATION
vo wp > 8
Section 02518, TRACER TAPE
B. Provide for control of slurry generated by sawing operation on both sides of wall.
C. When cutting a reinforced concrete wall, the cutting shall be done so as not to damage bond between
the concrete and reinforcing steel left in the structure. Cut shall be made so that steel neither
protrudes nor is recessed from the face of the cut.
B.
3.02
3.03
A.
that all sleeves or forms are at the work and properly set in ample time to prevent delays.
He shall see that all such chases, openings, and sleeves are located accurately and are of proper
size and shape and shall consult with the Engineer and the contractors and subcontractors
concemed in reference to this work.
SECTION 01735
CUTTING, CORING AND PATCHING
PART 1 - GENERAL
1.01 WORK INCLUDED:
This Section covers the cutting, coring, rough and finish patching of holes and openings in
existing structures.
PART 2 - PRODUCTS
2.01 SEALING MATERIALS:
All CCTV video files shall be identified by street names, manhole designations, pipe
diameter, length, date work was performed, labeled “City of Nashua”, contract number
and sub area designation.
END OF SECTION
2019 Sewer Replacement Project Documentation
Nashua, NH 01331-2
