Search

SECTION 15210

HIGH-DENSITY POLYETHYLENE
PIPE, FITTINGS, AND APPURTENANCES

PART 1 - GENERAL
1.1 SCOPE OF WORK

A. Supply and install high-density polyethylene (HDPE) pipe, fittings, and
appurtenance for the leachate collection and conveyance systems.

1.2 SUBMITTALS

A. CONTRACTOR shall submit to ENGINEER the following:

1. Manufacturing data listing resin type, cell classification, stock density,
melt flow, flexural modulus, tensile strength, and coloration.

2. Pipe Dimensions:
a. Average outside diameter.
b. Average inside diameter.
c. Minimum and average wall thickness.
d. Approximate weight in pounds per foot.

3. Manufacturer's instructions for fusing joints.

B. CONTRACTOR shall submit pipe welding certifications for pipe fusion machine
operators prior to beginning fusion operations.

1.3. MANUFACTURER'S QUALITY ASSURANCE

A. The pipe, fittings, and valve manufacturers shall have an established quality
assurance (QA) program responsible for inspecting incoming and outgoing
materials. At a minimum, incoming polyethylene (PE) materials shall be
inspected for density per ASTM D1505, melt flow rate per ASTM D1238, and
contamination. The supplier shall certify all incoming PE materials.

B. The pipe and fittings manufacturer shall have an established QA program
responsible for assuring the long-term performance of materials and products.
Representative samples of PE materials shall be tested against the physical
property requirements of this Specification. Each extrusion line and molding
machine shall be qualified to produce pressure rated products by taking
representative production samples and performing sustained pressure tests in
accordance with ASTM D1598.

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 1 of 15 Revised February 2019

C. QAtesting for representative pipe and fitting samples shall include:

Test Standard Pipe Fittings
Ring ESCR ASTM F1248 Yes Not Applicable
Sustained pressure at ASTM D1598 Yes Yes
176°F / 725 psi hoop stress (f0>100 h) (f0>100 h)
Sustained pressure at 73°F | ASTM D1598 Yes Yes
/ 1600 psi hoop stress (f0>1,000 h) (f0>1,000 h)

D. All outgoing materials shall be inspected for diameter, wall thickness, length,
straightness, out-of-roundness, concentricity, toe-in, inside and outside surface
finish, markings, and end cut. Quality control (QC) shall perform tests of
density, melt flow rate, carbon content, and carbon dispersion. In addition,
samples of the pipe provided shall be tested for hoop tensile strength and
ductility by either quick burst per ASTM D1599 or ring tensile per ASTM
D2290. Molded fittings shall be subject to x-ray inspection for voids, and tests
for knit line strength. All fabricated fittings shall be inspected for fusion
quality and alignment.

E. The pipe and fitting manufacturer shall maintain permanent QC and QA
records.

F. If manufacturer’s test data is inadequate or unavailable, then OWNER reserves
right to reject or require additional tests to satisfy material requirements. The
cost of these tests shall be borne by CONTRACTOR.

G. Work shall comply with codes and standards of the Plastic Pipe Institute (PPI).
1.4 DELIVERY, STORAGE, AND HANDLING

A. The pipe and fitting manufacturer shall package products for shipment in a
manner suitable for safe transport by commercial carrier. When delivered, a
receiving inspection shall be performed by CONTRACTOR, and any shipping
damage reported to the pipe and fittings manufacturer. Pipe and fittings shall
be handled, installed, and tested in accordance with manufacturer’s
recommendations, and the requirements of this Section.

B. Pipe Storage
1. Store or stack pipe to prevent damage from marring, crushing or
puncture. Limit maximum stacking height to 6 feet or manufacturer’s
recommended maximum height, whichever is less.
2. Store in accordance with manufacturer’s recommendations.

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 2 of 15 Revised February 2019

C. Pipe Handling

1. Protect pipe from excessive heat or harmful chemicals.
2. Handle pipe and use equipment needed to avoid gouging of the pipe

surfaces.

PART 2 - PRODUCTS

PHYSICAL PROPERTIES

A. Materials used for the manufacture of HDPE pipe and fittings shall meet the
following physical property requirements:

Property Unit Test Value
Procedure

Material Designation - PPI/ASTM PE 3408
Material Classification - ASTM D1248 ICS P34
Cell Classification - ASTM D3350 345464C
Density g/cm3 ASTM D1505 >0.940
Melt Index g/10 min ASTM D1238 <0.15
Flexural Modulus psi ASTM D790 110,000 to <160,000
Tensile Strength at yield psi ASTM D638 3,000 to <3,500
Slow Crack Resistance hours ASTM F1473 >100
(PENT)
HDB psi ASTM D2837 1,600 @ 23°C
UV Stabilizer % Carbon Black | ASTM D1603 2 to3
Elastic Modulus psi ASTM D638 110,000
Brittleness Temperature oF ASTM D746 <-180
Vicat Softening of ASTM D1525 255
Temperature
Thermal Expansion in/in/oF ASTM D696 1x10+
Hardness Shore D ASTM D2240 64

B. There shall be no evidence of splitting, cracking, or breaking when the pipe is
tested.

C. Ring Stiffness Constant (RSC) values for the pipe shall be 90 percent of the
nominal.

D. The pipe and fittings shall be homogenous throughout and free from visible
cracks, holes, foreign inclusions, or other injurious defects. The pipe shall be as
uniform as commercially practical in color, opacity, density, and other physical
properties.

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 3 of 15 Revised February 2019

E. Clean rework or recycled material generated by the manufacturer’s own
production may be used so long as the pipe or fittings produced meet all the
requirements of this Section.

2.2 PIPEAND FITTINGS

A. Dimensions

1. The nominal inside diameter of the pipe shall be true to the specified pipe
size in accordance with ASTM D2513. Standard laying lengths shall be 40
feet + 2 inches.

2. Fittings such as couplings, wyes, tees, adaptors, etc. for use in laying pipe
shall have standard dimensions that conform to ASTM D2513.

3. Pipe and fittings shall have the Standard Dimension Ratio (SDR) rating
indicated on the Drawings.

B. Pipe and fittings shall be produced by the same manufacturer from identical
materials meeting the requirements of this Section. Special or custom fittings
may be exempted from this requirement.

C. Pipe and fittings shall be pressure rated to meet the service pressure
requirements specified. Whether molded or fabricated, fittings shall be fully
pressure rated to at least the same service pressure rating as the joining pipe.

D. Molded fittings shall meet the requirements of ASTM D3261 and this
Specification. At the point of fusion, the outside diameter and minimum wall
thickness of fitting butt fusion outlets shall meet the diameter and wall
thickness specifications of the mating system pipe. Fitting markings shall
include a production code from which the location and date of manufacture
can be determined. Upon request, the manufacturer shall provide an
explanation of his production code.

E. Perforated pipe shall meet the same physical properties and requirements of
standard solid pipe. Hole spacing and orientation are presented on the
Drawing. Sections of perforated pipe shall be fused together with perforations
aligned between each section of pipe.

F. Marking
1. Each standard and random length of pipe and fitting in compliance with
this standard shall be clearly marked with the following information:
a. Manufacturer’s Name or Trademark;
b. ASTM Standard Designation;
c. Nominal Pipe Size;
d. Class & Profile Number;

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 4 of 15 Revised February 2019

27 Locke Road Concord, NH 03301

The H.L. Turner Group Inc.

Nashua Riverfront Development Project

Final Engineering Design

t: 603.228.1122 hiturner.com

5/11/2022
TASK DESCRIPTION WORRIMOURS rer
PM Structural PE Sr PD bin HOURS
Segment 6 - 53 Main Street Boardwalk
6.1 - Pile Redesign 2 24 6 16 2 50
6.2 - Verify 0.00 ft rise 4 24 2 30
6.3 - Structural Detailing 0
6.4 - E&S Evaluation 4 16 2
6.5 - Final Drawings & Specifications 8 40 4 64 4 120
a a a wren panne ana ban “30 “To | 200.
> > a oh o> a a a a oe oe ove we ee ee ee ee ee ee ee ee ee ee ee es ee es es ee ee ee ee ee re ee ee ee ee ee ee es eee ee ee ee
TOTAL HOURS 18 64 so 80 10 222
ESTIMATED ENGINEERING COSTS
Work Estimated
Hours Hourly Rate Costs
Project Manager (PM) 18 $ 150.00 $ 2,700.00
Structural Engineer (Structural) 64 $ 185.00 S 11,840.00
Project Engineer (PE} 50 $ 130.00 $ 6,500.00
Sr. Project Designer | (Sr PD) 80 $ 105.00 $ 8,400.00
Technical Coordinator (TC) 10 $ 100.00 $ 1,000.00
222 Total Fully Burdened Labor $ 30,440.00
Subconsultant $ -
Expenses $ 200.00
Estimated Direct Costs $ 200.00

TOTAL ESTIMATED COST = $ 30,640.00

2.3

e. Production Code, including Extrusion Date, and Lot or Batch
Number; and
f. SDR.

SOURCE QUALITY CONTROL

A.

The pipe and fitting manufacturer shall certify that samples of his production
pipe have undergone stress regression testing, evaluation, and validation in
accordance with ASTM D2837 and PPI TR-3. Under these procedures, the
minimum hydrostatic design basis shall be certified by the pipe and fitting
manufacturer to be 1600 psi at 73.4°F and 800 psi at 140°F.

Material shall be listed in the name of the pipe and fitting manufacturer by the
Plastics Pipe Institute (PPI) in PPI TR-4 with the following Standard Grade
ratings:

73.4°F 140°F
Hydrostatic Design Basis (HDB) 1600 psi 800 psi
Hydrostatic Design Stress (HDS) 800 psi 400 psi

PPI material listing in the name of the resin supplier is not acceptable in
meeting this requirement.

As the basis of the acceptance of the material, the manufacturer will furnish a
certificate of conformance of these Specifications upon request. When prior
agreement is being made in writing between the purchaser and the
manufacturer, the manufacturer will furnish other conformance certification in
the form of affidavit of conformance, test results, or copies of test reports.

Physical Test Requirements

1. Sampling: The selection of the sample of pipe shall be as agreed upon by
the purchaser and the manufacturer. In case of no prior agreement, any
sample selected by the manufacturer shall be deemed adequate.

2. Sample size for flattening test will be one sample per size and class of
pipe per project.

3. Conditioning: Conditioning of samples prior to and during test shall be as
agreed upon by the purchaser and manufacturer. In case of no prior
agreement, the conditioning procedure used by the manufacturer shall be
deemed adequate.

Test Methods (to be completed by Manufacturer)

1. Flattening: Three specimens of pipe, a minimum of 12 inches long, shall
be flattened between parallel plates in a suitable press until the distance
between the plates is 40 percent of the outside diameter of the pipe. The
rate of loading shall be uniform and such that the compression is

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 5 of 15 Revised February 2019

completed within 2 to 5 minutes. Remove the load, and examine the
specimens for splitting cracking or breaking.

2. Pipe Ring Stiffness Constant: The pipe ring stiffness constant shall be
determined using procedures similar to those outlined in ASTM D2412.
The stiffness of HDPE pipe is defined in terms of the load, applied
between parallel plates, which causes 1 percent reduction of pipe
diameter. Test specimens shall be a minimum of two pipe diameters or 4
feet in length, whichever is less.

2.4 GASKETS AND HARDWARE

A. All gaskets shall be %-inch thick, full face Viton with a Shore A durometer
rating between 60 and 80.

B. Below-grade joint hardware shall be Type 304 stainless steel.
C. Above-grade joint hardware shall be zinc-plated steel unless otherwise noted.
D. Hot-dipped galvanized fasteners are not allowed.

2.5 FITTINGS

A. Fittings shall be manufactured from polyethylene compound having cell
classification equal to or exceeding compound used in pipe to ensure
compatibility of polyethylene resins.

B. Provide factory-fabricated, dual containment fittings except as indicated
below.

C. Fittings shall be from same manufacturer as pipe being provided. OWNER may
allow substitution for approved material with use of flanged joint sections.

D. Dimensions of fittings conforming to standard dimensions and tolerances in
accordance with ASTM F2206.

E. _ Fittings shall have the same or higher pressure rating as pipe.

F. Markings
1. Manufacturer’s name or trademark
2 Nominal size
3. | Type of plastic pipe (i-e., PE 3408)
4. Standard dimension ratio
5 Extrusion date, lot number or batch number

File No. 3066.09 High-Density Polyethylene Pipe 15210 - 6 of 15 Revised February 2019

G. The Drawings do not show all fittings that may be required. CONTRACTOR to
provide all fittings required for a complete installation.

PART 3 ~- EXECUTION

3.1 FIELD QUALITY CONTROL

A. Pipe may be rejected for failure to conform to any of the following:

1.

Uo we

Fractures or cracks passing through pipe wall, except single crack not
exceeding 2 inches in length at either end of pipe which could be cut off
and discarded. Pipes within one shipment shall be rejected if defects
exist in more than 5 percent of shipment or delivery.

Cracks sufficient to impair strength, durability or serviceability of pipe.
Defects indicating improper proportioning, mixing, and molding.
Damaged ends, where such damage prevents making satisfactory joint.
Damage due to handling or installation. Scratches and gouges exceeding
five (5) percent of the wall thickness shall be considered excessive, and
may be rejected by OWNER or the CQA Consultant.

B. Acceptance of fittings, stubs or other specifically fabricated pipe sections shall
be based on visual inspection at job site and documentation of conformance to
this Section.

C. Prior to backfilling, CONTRACTOR shall obtain as-built survey
information (location and elevation) for the installed pipe at 50-foot
intervals, any changes in grade, and the location of all installed fittings.

3.2 INSTALLATION

A. — Trench, backfill, and compact in accordance with Specification Section 02200.

B. Heat Fusion of Pipe

1.

2.

Weld in accordance with manufacturer’s recommendation for butt fusion
methods. The pipe manufacturer shall certify fusion operators.

Butt fusion equipment for joining procedures shall be capable of meeting
conditions recommended by pipe manufacturer including, but not limited
to, temperature requirements, alignment, and fusion pressures.

For cleaning pipe ends, solutions such as detergents and solvents, when
required, shall be used in accordance with manufacturer's
recommendations.

Do not bend pipe to greater degree than minimum radius recommended
by manufacturer for type and grade.

File No. 3066.09

High-Density Polyethylene Pipe 15210 - 7 of 15 Revised February 2019

10.

11.

12.

Do not subject pipe to strains that will overstress or buckle piping or
impose excessive stress on joints.

Branch saddle fusions shall be joined in accordance with manufacturer’s
recommendations and procedures. Branch saddle fusion equipment shall
be of a size to facilitate saddle fusion within the trench.

Before butt fusing pipe, inspect each length for presence of dirt, sand,
mud, shavings, and other debris or animals. Remove debris from pipe.

Cover open ends of fused pipe at end of each working day. Cap to

prevent entry by animals or debris.
Use compatible fusion techniques when PEs of different melt indexes are

fused together. Refer to manufacturer's specifications for compatible
fusion.

Fusion welding shall not be performed when pipe ends are exposed to
precipitation. CONTRACTOR shall provide temporary welding shelter if
necessary.

All HDPE cuttings from pipe facing and drilling shall be removed from the
pipe network by CONTRACTOR prior to turning the Project over to
OWNER. CONTRACTOR shall clean the entire pipe network associated
with the Project if HDPE cuttings are encountered in the pipe network by
OWNER following completion of the project.

All interior butt-fusion weld beads shall be removed from the pipe
i.e. all HDPE pipe must de-beaded) in accordance with the

manufacturer’s recommendations.

C. Flange Jointing

1.
2.

Use on flanged pipe connection sections.

Convoluted stainless steel backup rings shall be used for joining HDPE

pipes below grade, and epoxy-coated carbon steel backup flanges shall be

used above grade.

Butt fuse fabricated flange adapters to pipe.

Observe the following precautions in connection of flange joints.

a. Use full-face Viton gaskets only.

b. All fasteners shall be Type 304 stainless steel below grade, and zinc-
plated steel above grade. Do not use hot-dipped galvanized
fasteners.

b. Align flanges or flange/valve connections to provide tight seal.
Require nitrile-butadiene gaskets if needed to achieve seal. Gaskets
are required for flange/valve connections. Flange adapters may
require modification or special adapters when used against butterfly
valves to provide clearance for disc to open fully.

c. U.S. Standard round washers as may be required on some flanges in
accordance with manufacturer’s recommendations. Bolts shall be
lubricated in accordance with manufacturer’s recommendations.

File No. 3066.09

High-Density Polyethylene Pipe 15210 - 8 of 15 Revised February 2019

d. Tighten flange bolts using a torque wrench in sequence and
accordance with manufacturer’s recommendations. CAUTION: Do
not over-torque bolts. CONTRACTOR shall use a torque wrench to
tighten all flange fasteners.

Pull bolts down by degrees to uniform torque in accordance with

manufacturer's recommendation.

Protect below grade bolts and flanges by covering with a 6-mil thick PE

wrap. Duct tape wrap to HDPE pipe.

Electrofusion couplers, where used, shall be installed per manufacturer's

specifications. The outside diameter of the HDPE pipe and face shall be

prepared in accordance with manufacturer’s recommendations prior to
installing the coupler.

D. Pipe Placement

1.

2.
3.

ND

“

10.
11.

12.

13.

Grade control equipment shall be of type to accurately maintain design
grades and slopes during installation of pipe.

Remove all standing water in trench before pipe installation.

Unless otherwise specifically stated, install pipe in accordance with
manufacturer’s recommendations.

Maximum lengths of fused pipe to be handled as one section shall not
exceed 400 feet and shall be placed according to manufacturer’s
recommendations as to pipe size, pipe SDR, and topography so as not to
cause excessive gouging or surface abrasion. Pipe wall gouges deeper
than 3/16-inch shall be cause for rejection of the pipe.

Cap pipe sections longer than single joining (usually 40 feet) on both ends
during placement except during fusing operations.

Remove dirt or debris from inside of pipe before backfilling.

Notify ENGINEER prior to installing pipe into trench and allow time for
ENGINEER’s inspection.

Correct irregularities found during inspection.

Complete connections within trench whenever possible to prevent
overstressed connections.

Allow pipe sufficient time to adjust to trench temperature prior to testing,
segment tie-ins, or backfilling activity.

Install reducers adjacent to laterals and tees.

To reduce branch saddle stress, install saddles at slope equal to and
continuous with lateral piping.

Place in trench by allowing minimum 12 inches/100 feet for thermal
contraction and expansion.

Coordinate construction of pipes near/in access roads with OWNER to
limit impediment of OWNER’s operations or operations of other
contractors.

File No. 3066.09

High-Density Polyethylene Pipe 15210 - 9 of 15 Revised February 2019