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Author:
roundrightfarm (WV)
I've got a bathroom and kitchen that share a wall. This wall contains the vent to the toilet as well as the sink drain. The top of the toilet bowl is 16 1/8" from the floor and I'm assuming this is the flood rim. I want to stub out the sink trap arm at 16" above the floor to accommodate a deep sink. Does this violate the rule that says a vent (the toilets) should be vertical, or at least not less that 45deg, until it is at least 6" above the fixtures flood height? The sinks trap arm is horizontal below this height.
Thanks
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Author:
packy (MA)
if your code allows wet venting a toilet with a kitchen sink then you are OK. rough the sanitary tee for the kitchen lower than 16 if you are going to have a disposer with the deep sink. 14-14 1/2 would be more like it.
as for the horizontal pipe, that is not a part of the wet vent.
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Author:
roundrightfarm (WV)
Thanks Packy,
We are in a rural area that does not have plumbing inspections. Still, I like to pay attention to the codes for my own sake. Do some codes not allow went venting a toilet with a kitchen sink drain? If so, what is the reasoning behind it?
Edited 1 times.
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Author:
packy (MA)
my mistake.. i was thinking of a washing machine. they are not allowed to wet vent another fixture (MA code).
too many suds.. other than that wet venting is the prefered method of venting. the vent is washed by the wet venting fixture. if the vent gets blocked, you will know right away as the sink will not drain..
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Author:
hj (AZ)
Some do not, the thinking being that the flow from a garbage disposer, for example, could induce a negative pressure in the toilet.
Edited 1 times.
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