NOTE: At the text below, delete requirements for
and references to push-on joints for ductile-iron
gravity sewer pipe and associated fittings when the
greater deflection afforded by the mechanical joint
is considered necessary throughout.
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a.
[Make push-on joints with the gaskets and lubricant specified for
this type joint and assemble in accordance with the applicable
requirements of AWWA C600 for joint assembly.] Make
mechanical-joints with the gaskets, glands, bolts, and nuts
specified for this type joint and assemble in accordance with the
applicable requirements of AWWA C600 for joint assembly and the
recommendations of Appendix A to AWWA C111.
**************************************************************************
NOTE: At the text below, delete the paragraph
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.
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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.
3.1.2.6
Installation of Ductile-Iron Pressure Lines
Unless otherwise specified, install pipe and 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,
joint assembly, and valve-and-fitting installation.
a.
[Make push-on joints with the gaskets and lubricant specified for
this type joint and assemble in accordance with the applicable
requirements of AWWA C600 for joint assembly.] Make
mechanical-joints with the gaskets, glands, bolts, and nuts
specified for this type joint; assemble in accordance with the
applicable requirements of AWWA C600 for joint assembly and the
recommendations of Appendix A to AWWA C111. [Make flanged joints
with gaskets, bolts, and nuts specified for this type joint. Make
flanged joints up tight, taking care to avoid undue strain on
flanges, fittings, and other accessories. Align bolt holes for
each flanged joint. Use full size bolts for the bolt holes; use
of undersized bolts to make up for misalignment of bolt holes or
for any other purpose will not be permitted. Do not allow
adjoining flange faces to be out of parallel to such degree that
the flanged joint cannot be made watertight without overstraining
the flange. When flanged pipe or fittings have dimensions that do
not allow the making of a proper flanged joint as specified,
replace it by one of proper dimensions.] [Assemble joints made
with sleeve-type mechanical couplings in accordance with the
recommendations of the coupling manufacturer, as approved.] [Make
[grooved] [and] [shouldered] type joints with the couplings
previously specified for this type joint connecting pipe with the
[grooved] [or] [shouldered] ends specified for this type joint and
assemble in accordance with the recommendations of the coupling
manufacturer, as approved. [Groove pipe in the field only with
SECTION 02531
Page 32
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