(1)
Nominally horizontal piping that is inside a building shall be braced to prevent swaying and buckling and to control the effects of thrust.
(2)
Nominally horizontal piping shall be supported as stated in Table 2.3.4.5.
(3)
Where PVC, CPVC or ABS plastic pipe is installed,
(a)
the pipe shall be aligned without added strain on the piping,
(b)
the pipe shall not be bent or pulled into position after being welded or joined, and
(c)
hangers shall not compress, cut or abrade the pipe.
(4)
Where PEX, PE-RT, PP-R, PE/AL/PE or PEX/AL/PEX plastic pipe or tube is installed, hangers shall not compress, cut or abrade the pipe.
(5)
Where hangers are used to support nominally horizontal piping, the hangers shall be
(a)
supported by metal rods of not less than
(i)
6 mm diam to support piping of NPS 2 or less,
(ii)
8 mm diam to support piping of NPS 4 or less, and
(iii)
13 mm diam to support piping over NPS 4, or
(b)
solid or perforated metal straps not less than
(i)
0.6 mm thick and 12 mm wide to support piping of NPS 2 or less, and
(ii)
0.8 mm thick and 18 mm wide to support piping of NPS 4 or less.
(6)
Where a hanger is attached to concrete or masonry, it shall be fastened by metal or expansion-type plugs that are inserted or built into the concrete or masonry.
Table 7.3.4.5. Support for Nominally Horizontal Piping
Forming Part of Sentence 7.3.4.5.(2)
