basement plumbing

Posted by Michael on June 25, 2001 at 23:02:10:
I am installing a bathroom in the basement. I have two questions. Can I wet vent the tolet and shower to the basin. The tolet is only 5 feet away from the basin drain and the shower is 3 feet away. and the tolet is at the end going to the main drain (see below). The builder of my house roughed plumb for a drain that I am connecting to. After removing the floor , I can see that the top of the 90 degree angle for the roughed drain is 8 inches below the basement floor. Some books I have read say I have to have an incline of 1/8 inch per foot and other say I need 1/4 per foot for the 3" drain. My question is this, when I connect to the roughed plumb drain that is below the floor, can I use a 90 degree angle or should I use something else. If I use the 90 degree angle, I think I have enough room. If I use two 45's it is too long and will not fit under the floor surface. Thank you so much in advance for any advice that you may offer.

Posted by Michael on June 25, 2001 at 23:02:10:

I am installing a bathroom in the basement. I have two questions.
Can I wet vent the tolet and shower to the basin. The tolet is only 5 feet away from the basin drain and the shower is 3 feet away. and the tolet is at the end going to the main drain (see below).

The builder of my house roughed plumb for a drain that I am connecting to. After removing the floor , I can see that the top of the 90 degree angle for the roughed drain is 8 inches below the basement floor. Some books I have read say I have to have an incline of 1/8 inch per foot and other say I need 1/4 per foot for the 3" drain. My question is this, when I connect to the roughed plumb drain that is below the floor, can I use a 90 degree angle or should I use something else. If I use the 90 degree angle, I think I have enough room. If I use two 45's it is too long and will not fit under the floor surface. Thank you so much in advance for any advice that you may offer.

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