Water Supply & DistributionQuestion 58 of 360
Threaded steel (galvanized) water pipe is run horizontally. What is the typical maximum horizontal support spacing?
a.6 feet
b.12 feet
c.3 feet
d.32 inches
Explanation
Threaded steel pipe is rigid and heavy, so the support table typically allows a maximum horizontal spacing of about 12 feet. 6 feet applies to small copper, 3 feet to small CPVC, and 32 inches to PEX, all of which are shorter than steel's allowance.
Law Reference: 2022 California Plumbing Code (CPC) Table 313.3Practice all 360 questions free — no signup required.
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