How far below the shower drain does the P trap have to be?


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Old 03-15-18, 02:38 PM
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How far below the shower drain does the P trap have to be?

I had to cut down the pipe that comes from the p trap and connects to the shower drain in order to create a floor pitch to the drain.

Looking down the pipe, the water from the trap is very visible as I only have a few inches of pipe extended from the trap.

This had me wondering if there was a min depth requirement that had to be met! Is there? If so, how far below the shower drain does the P trap have to be?

I'm guessing I am right around where the red line is.
 
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Old 03-15-18, 02:46 PM
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Don't have an answer. But my upstairs shower trap is tightly squeezed between the ceiling and floor. Just barely fits. Someone told me it's called a Los Angeles trap. ??????
 
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Old 03-15-18, 02:58 PM
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If the diagram represents what you have now... I don't see an issue.
 
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Old 03-15-18, 04:11 PM
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There is no minimum. The minimum is sort of dictated by the size of the pipes and trap fittings. There is a maximum distance away from the drain laterally but nothing about it's elevation that I can recall.
 
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Old 03-15-18, 05:39 PM
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Ok, I just measured and I have 3" of pipe before I hit the water from the trap. Maybe that's fine but I was not sure because usually you cant look directly down a drain as there is a stopper in the way of your view .
 
 

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