valves, and fittings; and with the recommendations for pipe joint assembly
and appurtenance installation in AWWA M23, Chapter 7, "Installation."
a.
Pipe Less Than 100 mm 4 Inch Diameter:
(1) Threaded joints shall be made by wrapping the male threads
with joint tape or by applying an approved thread lubricant, then
threading the joining members together. The joints shall be
tightened with strap wrenches which will not damage the pipe and
fittings. The joint shall be tightened no more than 2 threads
past hand-tight.
(2) Push-On Joints: The ends of pipe for push-on joints shall be
beveled to facilitate assembly. Pipe shall be marked to indicate
when the pipe is fully seated. The gasket shall be lubricated to
prevent displacement. Care shall be exercised to ensure that the
gasket remains in proper position in the bell or coupling while
making the joint.
(3) Solvent-weld joints shall comply with the manufacturer's
instructions.
b.
Pipe 100 mm 4 Inch Diameter Joints: Make push-on joints with
the elastomeric gaskets specified for this type joint, using
either elastomeric-gasket bell-end pipe or elastomeric-gasket
couplings. For pipe-to-pipe push-on joint connections, use only
pipe with push-on joint ends having factory-made bevel; for
push-on joint connections to fittings, cut spigot end of pipe off
square and re-bevel pipe end to a bevel approximately the same as
that on ductile-iron pipe used for the same type of joint. Use an
approved lubricant recommended by the pipe manufacturer for
push-on joints. Assemble push-on joints for pipe-to-pipe joint
connections in accordance with the requirements of AWWA C605 for
laying the pipe and the recommendations in AWWA M23, Chapter 7,
"Installation," for pipe joint assembly. Assemble push-on joints
for connection to fittings in accordance with the requirements of
AWWA C605 for joining PVC pipe to fittings and accessories and
with the applicable requirements of AWWA C600 for joint assembly.
Make compression-type joints/mechanical-joints with the gaskets,
glands, bolts, nuts, and internal stiffeners specified for this
type joint and assemble in accordance with the requirements of
AWWA C605 for joining PVC pipe to fittings and accessories, with
the applicable requirements of AWWA C600 for joint assembly, and
with the recommendations of Appendix A to AWWA C111. Cut off
spigot end of pipe for compression-type joint/mechanical-joint
connections and do not re-bevel.
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.
3.1.2.11
Pipeline Installation Beneath Railroad Right-of-Way
Where pipeline passes under the right-of-way of a commercial railroad,
install piping in accordance with the specifications for pipelines
SECTION 02531
Page 34
Previous Page
