continuous through the hanger on all pipe sizes and applications.
m.
Where there are high system temperatures and welding to piping is
not desirable, the type 35 guide shall include a pipe cradle,
welded to the guide structure and strapped securely to the pipe.
The pipe shall be separated from the slide material by at least
100 mm 4 inches, or by an amount adequate for the insulation,
whichever is greater.
3.12
WELDED INSTALLATION
Plumbing pipe weldments shall be as indicated. Changes in direction of
piping shall be made with welding fittings only; mitering or notching pipe
to form elbows and tees or other similar type construction will not be
permitted. Branch connection may be made with either welding tees or
forged branch outlet fittings. Branch outlet fittings shall be forged,
flared, flared for improvement of flow where attached to the run, and
reinforced against external strains. Beveling, alignment, heat treatment,
and inspection of weld shall conform to ASME B31.1. Weld defects shall be
removed and repairs made to the weld, or the weld joints shall be entirely
removed and rewelded. After filler metal has been removed from its
original package it shall be protected or stored so that its
characteristics or welding properties are not affected. Electrodes that
have been wetted or that have lost any of their coating shall not be used.
Threaded sections of rods shall not be formed or bent.
3.13
PIPE CLEANOUTS
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NOTE: Specify cast-iron adjustable heads where
heads are subject to loads, cleaning agents, and
chemicals which will destroy heads made of plastic
materials.
**************************************************************************
Pipe cleanouts shall be the same size as the pipe except that cleanout
plugs larger than 100 mm 4 inches will not be required. A cleanout
installed in connection with cast-iron soil pipe shall consist of a
long-sweep 1/4 bend or one or two 1/8 bends extended to the place shown.
An extra heavy cast-brass or cast-iron ferrule with countersunk cast-brass
head screw plug shall be caulked into the hub of the fitting and shall be
flush with the floor. Cleanouts in connection with other pipe, where
indicated, shall be T-pattern, 90-degree branch drainage fittings with cast
brass screw plugs, except plastic plugs shall be installed in plastic pipe.
Plugs shall be the same size as the pipe up to and including 100 mm 4
inches. Cleanout tee branches with screw plug shall be installed at the
foot of soil and waste stacks, at the foot of interior downspouts, on each
connection to building storm drain where interior downspouts are indicated,
and on each building drain outside the building. Cleanout tee branches may
be omitted on stacks in single story buildings with slab-on-grade
construction or where less than 450 mm 18 inches of crawl space is provided
under the floor. Pipe cleanouts concealed in partitions shall be provided
with chromium-plated bronze, nickel bronze, nickel brass or stainless steel
flush type access cover plates. Round access covers shall be provided and
secured to plugs with securing screw. Square access covers may be provided
with matching frames, anchoring lugs and cover screws. Cleanouts in
finished walls shall have access covers and frames installed flush with the
finished wall. Cleanouts installed in finished floors subject to foot
traffic shall be provided with a chrome-plated cast brass, nickel brass, or
SECTION 15405A
Page 92
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