Core TradesQuestion 90 of 700
Horizontal copper water piping must be supported at intervals so it does not sag and strain joints. Compared with copper, plastic (PEX or CPVC) piping generally requires:
a.Wider support spacing because it is stiffer
b.The same spacing as steel
c.Closer support spacing because it is more flexible
d.No support at all
Explanation
Flexible plastic piping sags more than rigid copper, so it needs more closely spaced hangers to prevent sagging and joint strain. It does not allow wider spacing, does not match rigid steel spacing, and always requires support.
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