Soil Pipe Under Concrete Floor

The soil pipe should enter the house at least 1 foot below the finish grade of the basement floor and it should have a pitch of about 1 4 per foot towards the outside of the house.

Soil pipe under concrete floor. Under no circumstances should this pitch or grade be less than 1 8 per foot. Raised floor also provides space for hiding hot and cold pipes serving the basin and cistern. The centre of the soil pipe is 150mm from the wall see pic below. So long as the invert level at point a is higher than point b water will flow.

There used to be a rule of thumb for pipe gradients in the old pipe sizes too. This sits about 100mm down from the floor level. Soil pipe under concrete floor i m building a ground floor under stairs toilet. The builder is going to bring in 2 x 110mm soil pipes under the new concrete slab for the extension and then bring them vertically up through the slab and celotex insulation into the en suite via an elbow on each.

I ve dug up the concrete floor and laid a 4 metre 110mm brown soil pipe that runs to the back of the house and down to the main drain. Looks good and works well. Considerations cutting through a concrete floor should be a last resort. If the drainage is already ventilated additional ground floor appliances eg.

A wc and washbasin may be connected directly to the drain without a ventilating pipe. To stop smells entering a building the open end of the ventilating pipe should be at least three metres to the side of or extended to 0 9m above any opening into a building. A peice of upvc pipe has been cemented on top of the clay pipe and the old pan connector was fitted to that. Levelling the false floor on the unlevel concrete floor was a challenge but as i did it all myself i had the time to custom cut 24 wood supports to provide even support for the 1 marine ply floor.

The problem is that the current soil pile comes up through the floor this is in the family bathroom upstairs. 4 inch should be 1 in 40 6 inch 1 in 60 9 inch 1 in 90. Once the concrete is out you can dig in the remaining trench to remove the sand or soil before running the new plumbing. The cement flange protrudes about 25mm above the floor level.

1 of the soil pipes is for the toilet and the other for connecting to the shower and wash hand basin. Its known as the pipe invert level.