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Author:
rand11b (IL)
I was hoping I could get some feedback on my plumbing design. I'm putting a 3/4 bathroom in our basement with a new ejector pit that's now dug in. I am in the Chicago suburbs and am not certain if for venting purposes the ejector pit needs it's own vent line to the roof and not to be combined with any other lines. There is a sump pit about 3 feet from where I have the ejector pit now and I'd love to be able to use that same vent line if possible. Also, is a 3" waste line to the pit sufficient? How about the vent sizes I have shown? Any feedback on my design is greatly appreciated!
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Author:
packy (MA)
3 inch is fine.
he venting looks good as well...
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Author:
North Carolina Plumber (NC)
Looks pretty good to me, I'd use a 1 1/2" arm and trap on the lavatory, and instead of a wye and 1/8 th bend to catch the shower trap, you might be able to just use a wye and go straight to the trap and eliminate a 90 degree turn.
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Author:
hj (AZ)
Except for the bar sink, unless there is more to it than he shows.
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Author:
Hillegas (WV)
What program was used to draw this diagram?
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Author:
rand11b (IL)
The bar sink is about 10' from the ejector pit so it's not yet modeled. So only the shower, lav, toilet and bar sink will be draining into the ejector pit and unless someone corrects me I have them all vented together and tying into the ejector pit vent.
HJ, what do you mean except for the bar sink? Are you referring to the venting and tying into the ejector pit vent line?
Thank NC plumber. I'm going to change the lav trap to 1 1/2" as you suggest. I get what your saying about eliminating that 90 from shower to lav drain. Is that simply for saving materials or does having it designed like i do have an affect on efficiency?
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Author:
rand11b (IL)
This was drawn or modeled using Revit 2016
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Author:
packy (MA)
since we are redisgning...
change the 3 inch wye to a 3 inch 45.
between the toilet and that 45 put a 3 x 2 wye and street 45 looking right at the shower. go a couple of feet and put a 2 inch wye and street 45 with the 45 looking at the lav and the back of the wye looking at the shower.
you can roll those wye's up slightly.
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Author:
rand11b (IL)
I already have the concrete cut open so unless I break it up more I am limited to how I have it designed now. I am not opposed to breaking up more concrete but only if it would be a worth it improvement in the system function. I do appreciate the input though as plumbing is the one trade I don't have any professional experience with. I did a rough outline of how the concrete is opened. The vent line from the lav is turned up through a wall.
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Author:
packy (MA)
my design will work with your cement cut-out..
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Author:
rand11b (IL)
okay I'm going to draw it up and post a new pic tomorrow. Does anyone think I shouldn't tie the vent lines for all bath fixtures and the bar sink into the ejector pit vent that goes up to the roof?
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Author:
packy (MA)
of course you can...
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Author:
sum (FL)
with Packy's suggestions, there will be a number of improvements.
Your wet vent will work better.
Right now your shower comes out and makes a left turn, then a right turn, then a left turn to get to the 3" line. That's three directional changes. If you have to snake it in the future, the less number of turns the better it performs and the easier to snake. With the improved version it is a straight shot to the 3" from the shower.
Also both the shower and the lav drains ties into the toilet line "sooner". that means there is always water rinsing part of that line even if someone washes hands or takes a shower.
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