approved groove cutting equipment designed especially for the
purpose and produced by a manufacturer of grooved joint couplings;
secure approval for field-cut grooves before assembling the
joint.]]
**************************************************************************
NOTE: Delete the text below except when required.
See the NAVFACENGCOM Design Manual on Water Supply
Systems for guidance. See Foreword to AWWA C105 for
guidance on selecting Class of polyethylene film.
**************************************************************************
b.
Exterior protection: Completely encase buried ductile iron
pipelines with polyethylene tube or sheet in accordance with AWWA
C105, using [Class A] [Class C] polyethylene film.
c.
Pipe anchorage: Provide concrete thrust blocks (reaction backing)
for pipe anchorage. Size and position thrust blocks as indicated.
Use concrete conforming to ASTM C 94/C 94M having a minimum
compressive strength of 13.80 MPa 2,000 psi at 28 days; or use
concrete of a mix not leaner than one part cement, 2 1/2 parts
sand, and 5 parts gravel, having the same minimum compressive
strength.
3.1.2.7
Installation of ABS Composite Plastic Piping
Install pipe and fittings in accordance with paragraph entitled "General
Requirements for Installation of Pipelines" of this section and with the
recommendations of the plastic pipe manufacturer. Make joints with the
primer and solvent cement specified for this joint and assemble in
accordance with the recommendations of the pipe manufacturer. Handle
solvent cement in accordance with ASTM F 402.
3.1.2.8
Installation of ABS Solid-Wall Plastic Piping
Install pipe and fittings in accordance with paragraph entitled "General
Requirements for Installation of Pipelines" of this section and with the
recommendations of the plastic pipe manufacturer. Make solvent cement
joints with the solvent cement previously specified for this type joint.
Make elastomeric joints with the gaskets specified for this type joint and
assemble in accordance with the recommendations of the pipe manufacturer.
Handle solvent cement in accordance with ASTM F 402.
3.1.2.9
Installation of PVC Plastic Piping
Install pipe and fittings in accordance with paragraph entitled "General
Requirements for Installation of Pipelines" of this section and with the
requirements of ASTM D 2321 for laying and joining pipe and fittings. Make
joints with the gaskets specified for joints with this piping and assemble
in accordance with the requirements of ASTM D 2321 for assembly of joints.
Make joints to other pipe materials in accordance with the recommendations
of the plastic pipe manufacturer.
3.1.2.10
Installation of PVC Plastic Pressure Pipe and Fittings
Unless otherwise specified, install pipe and fittings in accordance with
paragraph entitled "General Requirements for Installation of Pipelines" of
this section; with the requirements of AWWA C605 for laying of pipe,
joining PVC pipe to fittings and accessories, and setting of hydrants,
SECTION 02531
Page 33
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