Drainage, Waste & VentQuestion 2 of 120
What is the maximum developed length permitted between the trap weir and the vent opening for a 1-1/2 in trap arm?
a.3-1/2 ft
b.2-1/2 ft
c.5 ft
d.6 ft
Explanation
The trap arm table allows 3-1/2 ft of developed length for a 1-1/2 in trap arm. 2-1/2 ft is the limit for a 1-1/4 in arm, 5 ft applies to a 2 in arm, and 6 ft applies to a 3 in arm, so each of those is the wrong row of the table.
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