Planning & EstimatingQuestion 284 of 360
You are planning the DWV rough-in test. Under the CPC, a water test of the drainage and vent system is applied so that no section is tested with less than how much head of water?
a.10 feet of head (except the top 10 feet of the system)
b.1 foot of head
c.50 feet of head
d.No head is required; a visual check is enough
Explanation
CPC 712.0 water test requires the DWV system to be filled so that no section is tested with less than a 10-foot head of water, except for the top 10 feet of the system. This confirms the joints are watertight before concealment. Plan the test at the rough-in stage so any leaks are fixed before cover-up.
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