Plumbing Under Slab Floor

Don t ignore this because water leakage under a concrete foundation can cause additional problems.

Plumbing under slab floor.

Under slab plumbing diagrams. The minimum toilet vent size depends on your plumbing code. Because the plumber has no access for installing pipes below the concrete preliminary plumbing takes place before the foundation contractor pours the slab. These plumbing sewer pipes should be checked anytime there had been significant foundation movement or foundation repair.

Main sewer line the main sewer line runs beneath the future slab on a gravity flow system. Plumbing is one of the rough in elements of construction and is generally hidden by the finished elements such as walls floors and roofs. Below are a some under slab plumbing diagrams that are relatively common. It can also run under sidewalks stoops patios and decks.

Let s start with sizing individual plumbing vents. In the ipc toilet vents are 1 5 in the upc it s 2 inches. Have your plumber ready to come right away after the fill is spread and compacted under the slab. Today im going to share with you how i replace old cast iron drain pipes under a concrete slab in a 1958 home.

He will dig trenches as needed to run the sewer pipes and. That s when each plumbing fixture has its own vent which is called an individual vent. See our pages checking over the concrete slab drain pipes and plumbing in the walls for other items to review and check. And that s the method of venting we re using to plumb this bathroom.