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SECTION 01331

DOCUMENTATION

PART 1 - GENERAL

1.01 WORK INCLUDED:

A. This section covers the requirements for documentation to be furnished by the
Contractor on this project.

1.02 RELATED WORK:

A. Section 02650, CURED-IN-PLACE PIPE (CIPP) LINING OF EXISTING SEWERS

1.03 DOCUMENTATION:
A. The Contractor shall maintain CCTV inspection video of sewer segments, for each sewer
line segment undergoing lining under this contract and provide two (2) copies of the video

in digital format and a written report within five (5) working days of the work being
performed.

B. The report(s) as a minimum shall clearly identify:

1. Project Name

2. Street Location, Name, Intersection, Station

3. | Manhole Identification number.

4. Date of inspection

5. Total Length of Line Inspected

6. Line Size(s)/Joint Spacing/Type

7. Line and Manhole(s) Condition

8. Significant observations such as service connections, offset joints, drop joints,
broken/cracked pipe, protruding services, roots, collapsed sections, infiltration,
presence of scale and corrosion and other discernible features.

9. Reference to CCTV video number, including beginning and ending locations.

2019 CIPP Lining Project Documentation
Nashua, NH 01331-1

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 CIPP Lining Project Documentation
Nashua, NH 01331-2

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, as indicated on the drawings and as specified herein.

1.02 RELATED WORK:
A. Section 02300, EARTHWORK

B. Section 02252, SUPPORT OF EXCAVATION

C. Section 02631, PRECAST MANHOLES
1.03 REFERENCES:
A. The following standards form a part of these specifications as referenced:
American Society for Testing and Materials (ASTM)

ASTM = _—- 2321 Recommended Practice for Underground Installation of Flexible
Thermoplastic Sewer Pipe

ASTM = _D3034 Specification for Type PSM Polyvinyl Chloride (PVC) Sewer
Pipe
and Fittings

ASTM 0D3212 _ Specification for Joints for Drain and Sewer Plastic Pipes Using
Flexible Elastomeric Seals

ASTM _ F679 Specification for Polyvinyl Chloride (PVC) Large Diameter
Plastic Gravity Sewer Pipe and Fittings (18"- 27")

The National Association of Sewer Service Companies (NASSCO) Recommended
Specifications for Sewer Collection System Rehabilitation (Current Edition).

B. | New Hampshire Code of Administrative Rules, Env-Wq 704, Design of Sewerage.

2019 CIPPLining Project Polyvinyl Chloride Gravity Pipe and Fittings
Nashua, NH 02085-1

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:

PVC non-pressure sewer pipe 4-inches through 15-inches diameter (SDR-35) shall be solid
wall and conform to ASTM - D3034. PVC non-pressure pipe 18-inches through 60-inches
diameter (T-1 & T-2) shall be solid wall and conform to ASTM F679. All pipe shall be as
specified and meet the following requirements.

1. PVC non-pressure sewer pipe shall be furnished in standard lengths.

2. One pipe bell consisting of an integral wall section with a solid cross section rubber ring, factory
assembled, shall be furnished with each standard, random and short length of pipe. Rubber rings
shall be provided to the requirements of ASTM D3212.

3. The rubber ring shall be retained within the bell of the pipe by a precision formed groove
or recess designed to resist fish-mouthing or creeping during assembly of joints.

4. Spigot pipe ends shall be supplied with bevels from the manufacturer to ensure proper insertion.
Each spigot end shall have an "assembly stripe" imprinted thereon to which the bell end of the
mated pipe will extend upon proper jointing of the two pipes.

5. PVC fittings shall be provided with bell and/or spigot configurations with rubber gasketed joints
compatible with that of the pipe. Bend fittings with spigot ends shorter than the pipe recess bells
will not be allowed. The shorter spigot end would not allow proper seating of the spigot in the
mating bell and would permit undesired contact between the mating bell and the outside of
the fitting bell.

6. All pipe delivered to the job site shall be accompanied by independent testing laboratory
reports certifying that the pipe and fittings conform to the above-mentioned specifications. In
addition, the pipe shall be subject to thorough inspection and tests, the right being
reserved for the Engineer to apply such of the tests specified as he may from time to time
deem necessary.

7. All cutting of pipe shall be done with a machine suitable for cutting PVC pipe. Cut ends shall be
beveled when recommended by the pipe manufacturer.

8. All couplings for connecting pipes of various sizes shall be FERNCO STRONGBACK.

flexible repair couplings, or approved equal, of the appropriate size to fit the external diameter
of each pipe.

2019 CIPPLining Project Polyvinyl Chloride Gravity Pipe and Fittings
Nashua, NH 02085-2

SEWER 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.

G.

INSTALLATION:

Except as modified herein, installation of the PVC pipe shall be in accordance with ASTM
D2321.

Each pipe length shall be inspected before being laid to verify that it is not cracked. Pipe shall be
laid to conform to the lines and grades indicated on the drawings or given by the Engineer. Each
pipe shall be so laid as to form a close joint with the next adjoining pipe and bring the inverts
continuously to the required grade.

The pipe shall be bedded and covered with sand blanket as specified under Section 02300,
EARTHWORK, and as detailed on the project plans.

The pipe shall not be driven down to grade by striking it with a shovel handle, timber, rammer, or
other unyielding object. When each pipe has been properly bedded, enough of the backfill
material shall be placed and compacted between the pipe and the sides of the trench to hold the
pipe in correct alignment.

Before a joint is made, the pipe shall be checked to assure that a close joint with the next
adjoining pipe has been maintained and that inverts are matched and conform to the required line
and grade.

For pipe placed on crushed stone, immediately after the joint is made, the jointing area shall be
filled with suitable materials so placed and compacted that the ends of either pipe will not settle
under backfill load.

No pipe or fitting shall be permanently supported on saddles, blocking, or stones.

Branches and fittings shall be laid by the Contractor as indicated on the drawings, and/or as
directed by the Engineer. Open ends of pipe and branches shall be closed with PVC caps secured
in place with pre-molded gasket joints or as directed by the Engineer.

All pipe joints shall be made as nearly watertight as practicable. There shall be no visible
leakage at the joints and there shall be no sand, silt, clay, or soil of any description entering the
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.

2019 CIPPLining Project Polyvinyl Chloride Gravity Pipe and Fittings
Nashua, NH 02085-3

J. 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.

K. Care shall be taken to prevent earth, water, and other materials from entering the pipe, and when
pipe laying operations are suspended, the Contractor shall maintain a suitable stopper in the end
of the pipe and also at openings for manholes.

L. _ Assoonas possible after the pipe and manholes are completed on any street, the Contractor shall
flush out the new pipeline using a rubber ball ahead of the water, and none of the flushing water
or debris shall be permitted to enter any existing sewer.

3.02 QUALITY ASSURANCE

A. CLEANING, INSPECTION, AND TESTING:

1.

On completion of a section of sewer, the Contractor shall TV inspect the main section in
accordance with Section 02441, Cleaning, Television Inspection, and Testing of New
Pipelines at no additional cost to the Owner.

The Contractor shall be responsible for the satisfactory water-tightness of the entire
section of the sewer. Should the Engineer determine that the sections inspected are not
satisfactory, the Contractor shall be required to excavate and replace the entire section, at
no additional cost to the Owner.

B. PIPE DEFLECTION MEASUREMENT:

1.

2.

In accordance with ASTM D3034, no less than 30 days after completion of the PVC sewer
pipe installation, the Contractor shall test the pipeline for deflection using a "go/no-go"
deflection mandrel having a minimum of nine evenly spaced arms or prongs. The
"go/no-go" gauge shall be hand pulled through all sections of the pipeline by the
Contractor. The Contractor shall submit drawings of the "go/no-go" gauge to the Engineer
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.

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 CIPPLining Project Polyvinyl Chloride Gravity Pipe and Fittings

Nashua, NH

02085-4

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.

B. The Contractor shall furnish and place sheeting of the kinds and dimensions required,
complying with these specifications, where indicated on the drawings or ordered by the
Engineer.

1.02 RELATED WORK:
A. Section 02300, EARTHWORK.

1.03 QUALITY ASSURANCE:

A. _ This project is subject to the Safety and Health regulations of the U.S. Department of Labor
set forth in 29 CFR, Part 1926, and to New Hampshire law, RSA, Title XXIII: Labor.
Contractors shall be familiar with the requirements of these regulations.

B. The excavation support system shall be of sufficient strength and be provided with
adequate bracing to support all loads to which it will be subjected. The excavation support
system shall be designed to prevent any movement of earth that would diminish the width of
the excavation or damage or endanger adjacent structures.

PART 2 - PRODUCTS

2.01 MATERIALS:

A. Steel used for bracing shall be of such size and strength as required in the excavation
support design. Timber or steel used for bracing shall be new or undamaged used material
which does not contain splices, cutouts, patches, or other alterations which would impair its
structural integrity or strength.

PART 3 ~EXECUTION

3.01 INSTALLATION:

2019 CIPPLining Project Support of Excavation
Nashua, NH 02252-1

A,

Work shall not be started until all materials and equipment necessary for their construction are
either on the site of the work or satisfactorily available for immediate use as required.

The sheeting shall be securely and satisfactorily braced to withstand all pressures to which it
may be subjected and be sufficiently tight to minimize lowering of the groundwater level
outside the excavation.

No sheeting may be left so as to create a possible hazard to safety of the public or a
hindrance to traffic of any kind.

If boulders or very dense soils are encountered, making it impractical to drive a section to the
desired depth, the section shall be cut off.

The sheeting shall be left in place where indicated on the drawings or ordered by the
Engineer in writing. At all other locations, the sheeting may be left in place or salvaged at
the option of the Engineer. Steel sheeting permanently left in place shall be cut off at a depth
of not less than two feet below finish grade unless otherwise directed.

All cut-off will become the property of the Contractor and shall be removed by him from the
site.

Sole responsibility for the satisfactory construction and maintenance of the excavation
support system, complete in place, shall rest with the Contractor. Any work done,
including incidental construction, which is not acceptable for the intended purpose shall
be either repaired or removed and reconstructed by the Contractor at his expense.

The Contractor shall be solely responsible for repairing all damage associated with
installation, performance, and removal of the excavation support system.

END OF SECTION

2019 CIPPLining Project Support of Excavation
Nashua, NH 02252-2

SECTION 02300

EARTHWORK

PART 1 - GENERAL
1.01 WORK INCLUDED:

The Contractor shall make excavations of normal depth in earth for trenches and structures,
shall backfill and compact such excavations to the extent necessary, shall furnish the
necessary material and construct embankments and fills, and shall make miscellaneous
earth excavations and do miscellaneous grading.

1.02 RELATED WORK:
A. Section 01110, CONTROL OF WORK AND MATERIALS
B. Section 02085, POLY VINYL CHLORIDE GRAVITY PIPE AND FITTINGS
C. Section 02252, SUPPORT OF EXCAVATION

D. Section 02745, ROAD RESTORATION

1.03 REFERENCES:
American Society for Testing and Materials (ASTM)

ASTM C131 Test Method for Resistance to Degradation of Small Size Coarse
Aggregate by Abrasion and Impact in the Los Angeles Machine.

ASTM C136 ~~ Method for Sieve Analysis of Fine and Coarse Aggregates.

ASTM C330 Specification for Lightweight Aggregate for
Structural Concrete.

ASTM D1556 Test Method for Density of Soil in Place by the Sand Cone
Method.

ASTM = D1557 Test Methods for Moisture-density Relations of Soils and Soil

Aggregate Mixtures Using Ten-pound (10 Lb.) Hammer and
Eighteen-inch (18") Drop.

ASTM = D2922 Test Methods for Density of Soil and Soil-aggregate in Place by
Nuclear Methods (Shallow Depth).

1.04 SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

2019 CIPP Lining Project Earthwork
Nashua, NH 02300-1

Material test results performed by a certified laboratory shall be submitted to the
Engineer for all materials proposed for use on the project. If required by the Engineer,
samples shall be submitted for independent testing.

1.05 PROTECTION OF EXISTING PROPERTY:

A. The work shall be executed in such manner as to prevent any damage to facilities at the site
and adjacent property and existing improvements, such as but not limited to streets, curbs,
paving, service utility lines, structures, monuments, bench marks, observation wells,
and other public or private property. Protect existing improvements from damage
caused by settlement, lateral movements, undermining, washout and other hazards
created by earthwork operations.

B. Incase of any damage or injury caused in the performance of the work, the Contractor
shall, at its own expense, make good such damage or injury to the satisfaction of, and
without cost to, the Owner. Existing roads, sidewalks, and curbs damaged during the
project work shall be repaired or replaced to at least the condition that existed at the start
of operations. The Contractor shall replace, at his own cost, existing benchmarks,
observation wells, monuments, and other reference points which are disturbed or
destroyed.

C. Buried drainage structures and pipes, observation wells and piezometers, including those
which project less than eighteen inches (18") above grade, which are subject to damage
from construction equipment shall be clearly marked to indicate the hazard. Markers shall
indicate limits of danger areas, by means which will be clearly visible to operators of trucks
and other construction equipment, and shall be maintained at all times until completion
of project.

1.06 DRAINAGE:

A. The Contractor shall provide, at its own expense, adequate drainage facilities to complete
all work items in an acceptable manner. Drainage shall be done in a manner so that runoff
will not adversely affect construction procedures or cause excessive disturbance of
underlying natural ground or abutting properties.

1.07 FROST PROTECTION AND SNOW REMOVAL:

A. The Contractor shall, at its own expense, keep earthwork operations clear and free of
accumulations of snow as required to carry out the work.

B. The Contractor shall protect the sub-grade beneath new structures and pipes from frost
penetration when freezing temperatures are expected.

PART 2 - PRODUCTS
2.01 MATERIAL:
A. GRAVEL BORROW:
Gravel borrow shall consist of inert material that is hard, durable stone and coarse

2019 CIPP Lining Project Earthwork
Nashua, NH 02300-2