Can I drain a washing machine and lavatory through a 3" line into a 3" line (toilet drain) and use the washing machine and lav drain as a wet vent for the toilet? Would a 2 1/2 inch wet vent work. I'm not even sure they make 2 1/2 but I think I remember seeing it in a book somewhere.
Associated question is can I put a 3 1/2 in hole in a 2 x 10 if I reinforce the 2 x 10 some way. I know the hole will be larger than the 1/3rd rule, that is why I ask. The hole will be within a foot of the support wall. If I can reinforce the 2 x, how best is that done?
Associated question is can I put a 3 1/2 in hole in a 2 x 10 if I reinforce the 2 x 10 some way. I know the hole will be larger than the 1/3rd rule, that is why I ask. The hole will be within a foot of the support wall. If I can reinforce the 2 x, how best is that done?
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