P Trap Above Floor

I discovered that the p trap was not even in the stud cavity above the floor.

P trap above floor. The length of the tailpiece that connects the drain to the trap depends on a. The standard slope required on a water drainage pipe is 1 4 inch per linear foot of pipe. To allow adequate drainage from the shower to an up flush system the shower must be elevated. Plumbing traps are necessary beneath shower drains because they retain a little bit of water that acts as a plug to prevent sewer gasses from backing up into the room.

Make sure you get the p trap in the right location. The reducer allows you to transition from one size to another. Reattach the square subfloor piece and then measure the distance the from the p trap to the subfloor. When attaching the reducer and the p trap spread a high quality glue on the inside of them and then attach them firmly.

I am pretty sure that code states that the p trap should be above the floor correct. The trap must be accessible not hidden in the wall or between floor and ceiling etc but i don t see a prohibition specifically addressing the trap being under the floor. All traps must be installed on the same floor as the fixture served with the exception of tubs and showers. Typically these traps lie beneath the floor but if you re installing shower on a cement slab such as in a basement the trap is above the cement slab.

The washing machine line actually drains down below the house pier and beam house and into a common p trap below the floor. You can probably find that code bit in the dwv section not necessarily under washing machines. Trap seal is the maximum vertical depth of liquid that a trap will retain measured from the crown weir and the top of the dip of the trap. Kitchen p trap under the floor the fixture tailpiece can t be more than 24 so the under the floor question might be moot.

This is used with kitchen sinks lavatories and laundry sinks. In any case putting it below the floor would violate the maximum length of the stand pipe code which is 30 the need for a p trap. The most common of all plumbing traps is the p trap.