shower vent?

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Old 07-01-18, 08:01 AM
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shower vent?

if i hookup a shower abt 5' away from the main stack vent, do i need a vent? i may need a diagram of the main waste stack/vent, but it's iron and i plan to modify it.
 
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Old 07-01-18, 08:50 AM
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For 2" pipe, you have a max 60" from the trap weir (the last bend in the trap where it connects to the drain). So as long as you're within 5', the main stack will be your vent.

That said, this is only applicable if you're at the top floor. If there are any fixtures that drain into the stack above this bathroom, you'll need a new 2" vent for the bathroom group.

Often times, it's easier to just use a 2" vent from the vanity, which, if set up correctly, acts as a vent for the sink, toilet and shower. Do you have a sketch of your bathroom layout?
 
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Old 07-04-18, 05:02 PM
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I was looking from below and there is a 2" drain from the kitchen about 10" below the proposed shower drain. Can i tie into that? It would need to be an S trap which I thought was no longer legal?

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