3.1.2.3
Installation of Concrete Gravity Sewer Piping
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NOTE: Not allowed for LANTNAVFACENGCOM projects.
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Install pipe and fittings in accordance with paragraph entitled "General
Requirements for Installation of Pipelines" of this section and with the
provisions for rubber gasket jointing and jointing procedures of ACPA 01-103
or of ACPA 01-102, Chapter 9, "Installation, Inspection and Construction
Testing." Make joints with the gaskets specified for concrete gravity
sewer pipe joints. Clean and dry surfaces receiving lubricants, cements,
or adhesives. Affix gaskets to pipe not more than 24 hours prior to the
installation of the pipe. Protect gaskets from sun, blowing dust, and
other deleterious agents at all times. Before installation of the pipe,
inspect gaskets and remove and replace loose or improperly affixed gaskets.
Align each pipe section with the previously installed pipe section, and
pull the joint together. If, while pulling the joint, the gasket becomes
loose and can be seen through the exterior joint recess when the pipe is
pulled up to within 25 mm 1 inch of closure, remove the pipe and remake the
joint.
3.1.2.4
Installation of Concrete Pressure Lines
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NOTE: Not allowed for LANTNAVFACENGCOM projects.
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Unless otherwise specified, install pipe and fittings in accordance with
paragraph entitled "General Requirements for Installation of Pipelines" of
this section and with the laying and joining requirements specified in the
guide specifications for installation of pipe given in AWWA M9, Chapter 14,
"Guide Specifications for Installation of Pipe."
a.
Joints: Make joints with the gaskets specified for concrete
pressure pipe joints, using an approved lubricant recommended by
the pipe manufacturer. Assemble these joints in accordance with
the joining requirements specified in the guide specifications for
installation of pipe given in AWWA M9, Chapter 14, "Guide
Specifications for Installation of Pipe," and with the
recommendations given for laying the pipe in AWWA M9, Chapter 6,
"Installation by Trenching or Tunneling -- Methods and Equipment."
b.
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.
3.1.2.5
Installation of Ductile Iron Gravity Sewer Pipe
Unless otherwise specified, install pipe and associated fittings in
accordance with paragraph entitled "General Requirements for Installation
of Pipelines" of this section and with the requirements of AWWA C600 for
pipe installation and joint assembly.
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SECTION 02531
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