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3.10

A.

3.11

The method of adjusting these castings shall be as follows: Cut around catch basin or
manhole castings a minimum of 8-inches from casting. Excavate and if required rebuild up to
12-inches of masonry below the bottom of the casting. Backfill with suitable material and
compact to bottom of casting. Place high, early strength cement or bituminous
concrete collar, as directed, to approximately 1 '/2-inches below the raised casting grade.
Masonry work shall conform to Section 02631, PRECAST MANHOLES AND CATCH
BASINS.

In some areas, raising of castings may not be required. Where directed by the Engineer,
castings not to be raised shall have at least 12-inches of bituminous concrete pavement
chipped and removed around the casting. New bituminous concrete pavement shall be
placed and compacted around such castings to approximately 1-1/2-inches below the top of
the casting. The overlay course shall then be sloped down to the level of the casting.

The method of raising valve boxes shall be as follows: Cut around valve box a minimum of
8-inches from valve box. Excavate as required and raise the valve box. Pour high early
strength cement or bituminous concrete collar, as directed, to approximately 1-1/2-inches
below the top of the valve box.

Castings which need to be raised or adjusted to complete permanent curb to curb paving
shall be done immediately prior to paving.

PAVEMENT MARKINGS:

The Contractor shall replace all pavement markings removed or covered-over in carrying out
the work, and as directed by the Engineer, no sooner than 48 hours after completion of
permanent pavement. The markings and respective mixture and application requirements
shall conform to the requirements of NHDOT Standard Specifications Section 632.

When directed by the Engineer, the Contractor shall provide temporary markings at no
additional cost to the Owner.

PAVEMENT REPAIR:
If required in the contract or if permanent pavement becomes rough or uneven, permanent
pavement patches and trenches shall be repaired and brought to grade utilizing "infrared"

paving methods following completion of the construction.

The Contractor performing the work shall use care to avoid overheating the pavement
being repaired.

Pavement repair shall extend a minimum of 6-inches beyond all edges of the pavement
patch to assure adequate bonding at the pavement joints.

END OF SECTION

02745-8

SECTION 02745A

LOOP DETECTORS, AND PAVEMENT MARKINGS

LOCAL TRAFFIC LOOPS 6’ X 50’ (2-4-2 TURN)

A. SCOPE

This work consists of furnishing all labor, materials and equipment necessary to install the
quadruple loop detectors as directed by the Engineer.

B. MATERIALS AND CONSTRUCTION

This item shall include all labor, materials and equipment necessary to install new quadruple loop
detectors 2-4-2 turn, in conjunction with the paving program. Loops shall be installed in the
pavement surface prior to final overlay or top course.

a. Installation shall be in accordance with the details provided in Plan Drawings:
e Typical wire loop diagram
e Quadruple loop installation saw cut detail
e Loop detector segment detail
e Detector box out detail stage 1: at paving
e Detector box out detail stage 2: at loop installation
b. The City of Nashua will connect the new loop in the control panel if needed
c. Contractor will make connection in pull box. Contractor will solder, wire nut and
silicone seal connections for new loop at pull box. “Hockey puck” will not be used.

C. MEASUREMENT AND PAYMENT

Payment for loop detector installation shall be at the contract unit price specified for each and
shall include full compensation for material and labor to complete this portion of the Bid
Schedule.

RETROREFLECTIVE PAVEMENT MARKINGS

A. SCOPE

This work shall consist of furnishing and placing white or yellow retro reflective paint pavement

markings and retro reflective thermoplastic pavement markings at locations shown on the plans
or as ordered by the Engineer.

02745A-1

B. MATERIALS AND CONSTRUCTION

The Contractor shall furnish all labor, materials, equipment and transportation necessary for the
required placement of retro reflective paint and thermoplastic pavement markings in accordance
with Section 632 of the most current edition of the NHDOT Standard Specifications for Road
and Bridge Construction and the most current edition of the MUTCD. Striping shall match
existing striping and be replaced in kind or as directed by the Engineer. All stop bars, crosswalks
and symbols shall be retro reflective thermoplastic and all long lines shall be retro reflective
paint.

C. MEASUREMENT AND PAYMENT

Retro reflective Paint Pavement Marking,
Single Solid Line, 4in. Linear Foot

Retro reflective Thermoplastic Pavement Marking,
Single Solid Line, 12in. Linear Foot

Retro reflective Thermoplastic Symbol Square Foot

02745A-2

SECTION 02769

PNEUMATIC ASSISTED AND SEGMENTAL STATIC HDPE SLIPLINING

PART 1 - GENERAL
1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and
Supplementary Conditions, apply to this section.

1.2 SUMMARY
A. This Section includes the following:

1. Furnishing all plant, labor, equipment and materials, cleaning,
internal inspection, point repairs, and performing all operations in
connection with the furnishing and the insertion of high density
polyethylene pipe (HDPE) inside the existing host pipe using
pneumatically assisted sliplining. Work shall include cleaning and
videotaping the existing sewer lines, as specified in pertinent
sections of the Contract specifications, flow handling and/or bypass
pumping of existing flows (if required), maintaining surface water
drainage services, and any restoration work needed to replace
damaged structures and landscaping or ground conditions.

2. It shall be the responsibility of the Contractor to perform the work
under this contract in a sequence which is the least disruptive to the
normal flow of vehicular and pedestrian traffic, and in a manner
which will protect the public from damage to person and property
within the limits of and for the duration of the contract.

3. Host Pipe is defined as the existing sanitary, storm drain and/or
combined sewer to be replaced by sliplining.

4. Renewal Pipe is defined as new High Density Polyethylene pipe
(HDPE) to be installed inside the host pipe.

1.3 SUBMITTALS

A. General: Submit each item in this Section according to the Conditions of
the Contract.

02769-1

For the pneumatically assisted sliplining method(s) of pipe rehabilitation, the
Contractor shall submit the following information specific to the proposed
project.

1. Name(s) of all supervisory personnel to be directly involved with
each pneumatically assisted sliplining method of pipe renewal for
this project. Supervisory personnel shall have a minimum of two
years experience and two completed projects for the installation of
pneumatically assisted sliplining renewal pipe within the past five
years. Attach resumes of each person named. Resume information
shall include, as a minimum, the number of years in a supervisory
capacity and a list of projects worked on within the past five years,
describing the type of construction, project description, complexity,
contract amounts, and educational background.

2. Describe the pipe renewal method(s) proposed on this Contract,
including, but not limited to, the following:

a. Name, business, address, and telephone number of each
sliplining manufacturer of the pipe rehabilitation method
proposed; a description of each method; and any variances
that the Contractor may be proposing from the specified
methods.

b. Hours of operation, sequencing of work description, number
of shifts, number of crews, and expected time to complete
the work for each renewal method proposed.

C. Describe any surface activities that will be required and any
mitigative measures that will be used to reduce surface
impacts as part of each renewal method proposed.

d. Describe rehabilitation method, manufacturer, including
sequencing of operations, scheduling, time of completion,
hours of operation, surface impacts, access and staging
location(s), and other considerations that may be pertinent to
the proposed work.

3. The Contractor shall sign and date the information provided and
certify that to the extent of his knowledge, the information is true
and accurate, and that the supervisory personnel and method(s) of
pipe rehabilitation proposed will be directly involved with and used
on this project, respectively. Substitutions of personnel and/or
methods will not be allowed without written authorization of the
Engineer.

02769-2

ACKNOWLEDGEMENT OF NOTICE
Receipt of the above NOTICE OF AWARD is hereby acknowledged:

By: , the day of , 20 by

[title]

Copy to ENGINEER (Use Certified Mail, Return Receipt Requested)

Page 2 of 15

Prior to construction of the sliplining repair, the Contractor shall submit
shop drawings, details, and descriptions to include construction methods and
equipment, process description, access locations, receiving manhole
locations, flow handling, bypass pumping, flow diversion, and or dewatering
methods and design calculations to assure that the work can be
accomplished as specified in this section. Pre- and post-construction video
documentation shall be provided to the Engineer as specified in pertinent
sections of the contract.

The Contractor shall submit for review shop drawings and/or descriptive
literature, providing the manufacturer's specific product data with
information on the new HDPE pipe physical and mechanical properties of
the pipe, pipe dimensions, joint configuration, and other details of pipe to
be furnished, design calculations showing structural adequacy of pipe
selected, allowable grout pressure, allowable pushing or pulling forces for
the pipe, method of pipe insertion, method of handling wastewater flows,
dewatering methods, bulkhead design and details, insertion pit or shaft
locations, method of support of excavation, and connection details to
transition systems for manholes and structures.

The Contractor shall submit cleaning methods and pre- and _post-
construction video documentation as specified herein.

1. The Contractor shall submit the particular method by which he
plans to maintain traffic, signing-schedule, access roads, and
locations of access shafts/pits and receiving pit locations to the
Owner for review and approval prior to commencement of
construction.

2. Prior to commencement of work, the Contractor shall submit a
detailed plan outlining how the Contractor intends to accomplish
the proposed pneumatically assisted sliplining work, including the
equipment set-up, schedule, and sequence of construction. The
Contractor shall notify all affected services prior to commencement
of work.

3. The Contractor shall submit written descriptions of the
construction method(s) and equipment to be used, and access shaft
sizes and locations required for equipment and material access.

4. The Contractor shall submit written descriptions of the
construction method(s) and equipment to be used to penetrate
blockages and/or partially collapsed sections of the host pipe. This
work shall be accomplished without excavation from the surface,

02769-3

unless written authorization is obtained from the Owner for surface
excavations to remove blockages.

5. Hours of operation, sequencing of work description, number of
shifts, number of crews, and expected time to complete the work
for the rehabilitation method proposed shall be described.

6. The Contractor shall describe any surface activities that will be
required, and any mitigation measures that will be used to reduce
surface impacts as part of the rehabilitation method proposed.

7. The Contractor shall describe the method(s) proposed for annular
space grouting, including grouting subcontractor qualifications.

The location and number of access shafts shall be submitted for review
and approval by the Owner. This submittal shall include any appropriate
sketches deemed necessary by the Owner. The Contractor shall be
responsible for obtaining all necessary permits as they relate to the
location, should they be accepted by the Owner. The pits or shafts shall be
spaced in conformance with the pipe manufacturer’s recommended
maximum allowable insertion force that can be exerted onto the liner pipe.

1. The size of the access shaft shall be as small as possible, but
sufficient to allow access for the Contractor's work. The
Contractor shall be responsible for support of excavation and
dewatering of each shaft. The shaft(s) shall be removed and
backfilled as soon as practical upon completion of the liner pipe,
and the surface restored in accordance with the applicable
provisions of these Specifications.

2. The Contractor shall minimize the time that a shaft remains open at
a particular site. Considerations shall be provided to complete and
coordinate all work, including cleaning, pre-installation internal
inspection, pipe and manhole/catchbasin rehabilitation (as needed),
post-installation internal inspection, and acceptance, so as to
minimize surface disturbances.

The Contractor shall submit the particular method by which he plans to
maintain traffic, signing schedule, access roads, and locations of access
locations and receiving manhole to the Owner for review and approval prior

to commencement of construction.

Omitted.

02769-4

The Contractor shall submit the method(s) and equipment he proposes to use
for repairs of non-compliant renewal sections, defects, test sample section
repairs, or other deformities in the completed liner pipe. Such repairs shall
be in accordance with the liner manufacturer's recommended written
procedures and techniques.

The Contractor shall submit reversible direction hammer manufacturer’s
specifications including: calculated impact force, blows per minute at
recommended air supply, optimal air supply, air consumption, calculated
energy production, and average impact force during pipeline installation
progression, for the hammer to be used in pneumatic hammer assisted
sliplining.

1.4 QUALIFICATIONS

A.

The Contractor shall provide documentation supporting the qualification
criteria specified herein in Paragraphs 1.4A through 1.4D.

1. The Engineer reserves the right to request, inspect, examine, and
review information pertaining to a Contractor's proposed method(s)
for compliance with the Contract Specifications.

The qualifications of the Contractor shall be submitted so as to demonstrate
that the Contractor meets or exceeds the minimum requirements specified
herein. Any Contractor whose qualifications do not meet the minimum
qualifications shall be rejected and shall not be permitted to participate in the
construction of work specified herein.

It is the responsibility of the Contractor to confirm that any subcontractor or
manufacturer proposed for performance of the work under this section of the
Specifications can demonstrate the minimum requirements specified herein.
Rejection of any subcontractor and/or manufacturer shall not be grounds for
modifications to the Contract Documents. No change in contract time of
completion or contract cost will be allowed as a result of such rejection of a
subcontractor and/or manufacturer to meet the minimum requirements
specified herein.

The Contractor installing the pneumatically assisted sliplining pipe shall
have completed at least five (5) similar projects, in the United States of
America, in the past three (3) years on pipeline projects that included
slipline pipe installation of at least the maximum pipe diameter proposed
for the project and lengths of at least 300 continuous linear feet.

02769-5

PART 2 - PRODUCTS

2.1 MATERIALS

A. Solid Wall High Density Polyethylene Pipe (HDPE)

1.

The HDPE renewal pipe shall be manufactured from a high

density, high molecular weight polyethylene resin, which conforms

to ASTM D-1248 and meets the requirements for Type III, Class B,

Grade P34, Category 5, and has a PPI rating of PE 3408, when

compounded. The pipe produced from this resin shall have a

minimum cell classification of 345434C or D under ASTM D 3350

and shall have the following physical properties:

a. Density: 0.955 gms/cubic centimeters per ASTM D1505.

b. Flexural Modulus: Minimum 135,000 psi per ASTM D790.

C. Tensile Strength: Minimum 3,200 psi per ASTM D638.

d PENT > 100 hours at 80 degrees C, 2.4 Mpa per ASTM

F1473.

HDB@ 23 degrees C: 1,600 psi per ASTM D2837.

f. UV Stabilizer: Minimum 2% carbon black per ASTM D
1603.

@

2. The renewal pipe shall be 12” SDR 17 IPS HDPE pipe.

3.

All pipe shall be made of virgin material. No re-work, except that
obtained from the manufacturer’s own production of the same
formulation shall be used.

The pipe shall be homogenous throughout and shall be free of
visible cracks, holes, foreign material, blisters, or other deleterious
faults.

The interior surface of the HDPE pipe shall not be dark or non-
reflective in nature that could inhibit proper television inspection.

The finished HDPE pipe shall be continuous over the entire length
of an insertion run between the insertion pit and reception pit. The
HDPE pipe shall be impervious and free of any leakage from the
rehabilitated host pipe to surrounding ground, or from the
surrounding ground to the inside of the pipe.

The manufacturer of the pipe shall supply the OWNER with

certificates of compliance indicating conformance for all material
and testing requirements furnished under these Specifications.

02769-6