Drainage, Waste & Vent第 22 / 120 题
What is the maximum vertical distance permitted between a fixture outlet and the trap weir serving that fixture?
a.18 in
b.24 in
c.30 in
d.36 in
解析
The vertical drop from the fixture outlet to the trap weir may not exceed 24 in, which limits the velocity of falling waste that could otherwise scour the seal. 18 in is more restrictive than the code requires, and 30 in and 36 in exceed the permitted drop.
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