In my basement furnace room I have a 2" black ABS vent that T's off into 2
pipes going down into the slab. Kinda looks like an 'h' where the horizontal
jog is about 5' above the slab.
What is the purpose of this double pipe into one? I have seen this is other
I put a freezer in there and now have trouble getting to the water softener
back behind the furnace. I assume I can't just cut off and cap one of the
pipes but I could reconfigure the pipe so that I can step over it by putting
in a couple of 45's or three 90's and jog over and up. Is there a problem
with reconfiguring the vent pipes?
It's apparently venting 2 drains
which happen to be under the slab.
Yes, you can reconfigure it.
Any horizontal sections must
slope "upward" toward the roof
terminal. That allows condensate
to drain back down.
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