Plumbing Under The Floor

So before you can do any real planning you have to find that line.

Plumbing under the floor.

The two major plumbing codes in the united states is the ipc international plumbing code and the upc. Take your floor plan and measuring tape and check the location of every pipe. Diameter vertical pipe that runs into the basement floor. Using the dimensions on the floor plan measure from the outside of the foundation walls or slab.

The holes must follow a straight line across the floor and must ascend or descend so the pipe will be sloped 1 4 inch per foot. Once the trenches are dug you can add the sewer pipes and stub outs pipes that sit above the slab floor that eventually connect the sink toilet bathtub or shower and any other drains to the system. Water can run down the pipes into the floor or subfloor rotting the sink base the floor and the framing. Supply leaks under the kitchen sink or bath vanity can go unnoticed for a long time since they re usually at the back of the cabinet.

But it may run at an angle rather than straight out to the street. Here s how to connect the plumbing under your bathroom sink. First locate the main stack the large 3 or 4 in. The plumbing trenches are typically dug at the same time as the slab footings if any.

Signs of under sink plumbing trouble. During new construction the builder installs drain lines and stubs that will connect to future plumbing fixtures before he pours the slab on grade. If joists are 16 inches on center and pipes run across them at a right angle holes should differ in height by about 3 8 inch. Also notice the drain is centered right in the middle of this 30 inch vanity.

The center of the lav s drain is located 18 approximately above the finished floor.