Wet Vent Sizing Calculator

Size wet vents serving multiple bathroom fixtures per wet venting provisions.

Total DFU on wet vent.
DFU
1 if WC present, 0 if not.
Bathroom groups served.

Results

Wet Vent Size-inches
Max DFU Allowed-DFU
Max Bathroom Groups-
References: Based on UPC Section 910 and IPC Section 912 wet venting requirements