Complete Compiled Specification.pdf - Peck Ormsby Construction

HANGERS AND SUPPORTS:
General:
All piping shall, as a minimum standard of performance, be supported per MSS SP-69, and generally as follows:
Vertical Piping:
Attachment - Vertical piping shall be secured at sufficiently close intervals to keep the pipe in alignment and to
carry the full weight of the pipe and contents. Stacks shall be supported at their bases, and if over two (2) stories
in height at each floor by approved metal floor clamps.
Cast iron soil pipe shall be supported at not less than each story height and at its base.
Screwed pipe (IPS) shall be supported at not less than every other story height.
Copper tubing shall be supported at each story for piping one and one-half (1-1/2) inches in diameter and at not
more than six (6) foot intervals for piping one and one-quarter (1-1/4) inches in diameter and smaller. Piping
shall be wrapped with three wraps of vinyl tape to isolate pipe from ferrous pipe supports.
Horizontal Piping:
Supports - Horizontal piping shall be supported at sufficiently close intervals to keep it in alignment, prevent
sagging, and to insure that the weight of the piping system is not transferred to equipment connections.
Cast Iron Soil Pipe - Where joints occur, soil pipe shall be supported at not more than 5-foot intervals, except
that where 10-foot pipe lengths are used, supports at 10-foot intervals are acceptable. Supports shall be placed
within eighteen (18) inches of the hub or joint. No-hub joints and fittings shall be restrained with rods and clamps
where required per manufacturer's recommendations.
Screwed pipe (IPS) shall be supported at approximately 12-foot intervals.
Copper tubing shall be supported at approximately 6-foot intervals for piping one and one-half inches and
smaller in diameter and at 10-foot intervals for piping two inches and larger in diameter.
Hangers shall be MSS-69 Type-1 for both bare and insulated pipe. Hangers shall be over-sized where required
to accommodate insulation saddles and shields.
Where roller type supports are used, they shall be MSS-69 Type-43 chair type or suspension type, as required.
(Provide carbon steel pipe saddles on insulated pipes).
Where piping is run adjacent to walls or steel columns, it shall be supported from steel brackets or vertical
channel hangers. Channel systems shall be approved for each condition on an individual basis.
Furnish all hangers, inserts, brackets, anchors, guides, sliding supports, etc., and all auxiliary steel necessary for
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDTION March 2, 2009
BASIC MATERIALS & METHODS 15050-8