I have a plumbing question?

Question

I am installing a new shower in an area where there was none. I am building the shower up on a platform so the water will have enough pitch to flow to the sewer line. My question is what do I have to do to keep the odor of the sewer line out from the drain through the drain line to the sewer, which is one continuous run. I am familiar with the P-traps in sink application but not with this application. Also, just in case I can't get the right pitch for the drainage, what do you recommend (pump) etc.? and how do I do it?

Answer 1

It seems that you are installing your shower in your basement, if this is true and the connection is made directly to the sewer main "which should already be vented" you should not require a vent provided that the shower drain is 7' or less from the connection point. However two things, 1 you need a trap, 2" to be exact, made up of a 2" u-bend and a 2" service 90 degree elbow, 2 if the installation is in the basement I would recommend a 2" check valve, this will prevent sewage from entering the basement in the event of a sewer blockage. If you have a problem with the pitch you can use a pump, there are two types out there, one is installed above ground which means that you" probably still need some kind of platform, the other type is buried in the ground and comes with instructions, one thing however both of these devices need to be vented or when the pump discharges it will suck the water out of the trap under your shower and this will make the swell from the sewer seem like roses!

Answer 2

The P-trap should be placed immediately below the drain. Remember you will need a vent through the roof, this should be placed immediately downstream of the P-trap.

While plumbing codes require 1/4" per foot slope, for a shower you could probably go as little as 1/8" per foot.

Answer 3

I think you're required to have a vent on the drain line also. A P trap is necessary too. If this is in the basement, you can cut the concrete floor and this may help with the pitch.

Answer 4

P or U bend, you need a water seal to stop the bad air coming up the pipe.
If you do not have enough room for this then as you say a pump system is best.
Just keep the foul air out.

Answer 5

for shower drains they make p traps as well but they are glue in style if you don't have one you need to cut one in below the shower drain installing a trap does not require a lot of space and will solve your problem

Answer 6

see home depot