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Plumbing Rough-In (Top-Out) Inspection

Updated Mar 26, 2026
Above-slab plumbing inspection: pipe sizes, venting, trap arm lengths, fixture unit calculations, water hammer arrestors, expansion tanks, and proper support. Air test at 5 psi for 15 minutes.
TAGS
plumbingrough-inventingtraptest
DETAILS
test
Air test 5 psi / 15 min
timing
After top-out, before close-in
category
Plumbing
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