Wet vent
Posted:
Tue Jan 01, 2013 12:46 amby Marc M
Hey Jerry,
Can you check this install for me. Its a wet vent viewed from the attic. Left in image is WC and right is shower. Isnt the WC a minimum 3"? Sorry about the images, they were taken from far away.
Marc
Re: Wet vent
Posted:
Sun Jan 06, 2013 12:14 amby Jerry Peck - Codeman
Marc,
I saw your post when you posted it; however, I was out of town at the time and did not have my codes with me - does this help?
From the 2009 IRC (California may have amendments affecting this): (bold and underlining are mine)
- P3113.1 Size of vents. The minimum required diameter of individual vents, branch vents, circuit vents, vent stacks and stack vents shall be at least one-half the required diameter of the drain served. The required size of the drain shall be determined in accordance with Chapter 30. Vent pipes shall be not less than 11/4 inches (32 mm) in diameter. Vents exceeding 40 feet (12 192 mm) in developed length shall be increased by one nominal pipe size for the entire developed length of the vent pipe.
I believe you are thinking of the drain size for the water closet.
