Using 45's and lowering trap

[Snets]

Can anyone tell me if I am OK lowering the trap on my shower drain? I want to go around a 1/2" copper pipe with some 45 degree elbows. going down to the trap. which will require me to add about three inches to the depth.

That would put the bottom of the trap at 20.5" from where the water will enter the drain at the shower floor.

The photo shows where the drain should land to be in the middle of the shower floor.

Thanks!

 

[wwhitney]

20.5" is fine, I assume the offset you show would be used on the vertical? You'd have to lower the trap arm, vent connection, and branch drain connection the same amount (or rather enough so that the vent connection occurs before the trap arm falls more than one pipe diameter).

Rerouting the copper would probably be the more conventional solution, the offset on the shower tail piece is not very elegant.

Cheers, Wayne

 

[Sponsor]

 

[Reach4]

I am not sure what you are describing, but I suspect you can't do what you propose.

After the trap, the trap arm stays horizontal until it is vented. So if you are saying there is a drop of 20.5 inches before the input to the trap, I think that is ok, being under 24 inches.

https://terrylove.com/forums/index.php?threads/vertical-drain-drop-limit.33944/

 

[Snets]

Shower drain, down vertically through two, 45 degree bends to clear the pipe the into the 180 degree trap and into the trap arm which is unchanged from how the house was built. The 20.5" is from where water enters drain to the bottom of the 180 degree bend (trap)

Sorry, hope that clarifies. Maybe I will just reconfigure the 1/2" copper.

 

[Snets]

Reconfigured the 1/2" copper pipe instead of changing the drain. It was a pain in the butt because it is lower than the lowest faucet in the house, took forever to be free of water but it's done and leak-free. Thanks for the help.