Plumbing Under Concrete Basement Floor

Plumbing is one of the rough in elements of construction and is generally hidden by the finished elements such as walls floors and roofs.

Plumbing under concrete basement floor.

For the purpose of clarity let us take the three types of houses discussed in this book the house with basement the house without basement and the house with a poured concrete slab floor and show how the plumbing installation should be done for each one. First locate the main stack the large 3 or 4 in. If your basement is in the way and there are structural deficiencies or cracks in the concrete then your basement becomes the path of least resistance and the groundwater goes there. At this point you will no longer see the horizontal drainpipes and the main sewer line but you will see the stubs that extend vertically out of the sand.

Once the concrete is out you can dig in the remaining trench to remove the sand or soil before running the new plumbing. Houses built on a slab lack crawlspaces and there is no space under the floor. But it may run at an angle rather than straight out to the street. Considerations cutting through a concrete floor should be a last resort.

It can also run under. The concrete slab is often placed on a layer of sand for drainage or to act as a cushion. Rising groundwater causes hydrostatic pressure and that causes soil to push on your basement walls and floor. A concrete slab foundation is constructed by pouring concrete a mixture of gravel or broken stone sand cement and water within a mold to cure.

Homes with this a concrete slab foundation rest atop this rock solid block. Before the concrete trucks come the contractor fills in the area over the network of plumbing pipes and drain lines with compacted sand. From there the pipe runs under the floor and out to the city sewage system under the street. How to run plumbing under concrete.

Diameter vertical pipe that runs into the basement floor.