Floor Drain P Trap Diagram

Many basement floor drains tie directly to the home s sewer system but in some communities local building codes require floor drains to run to a sump pit where a pump lifts the water to the exterior surface of the house.

Floor drain p trap diagram.

Basement floor drains don t get a lot of attention until the sewer backs up or the basement smells like an outhouse. Apr 11 2018 explore mitchell matthews s board floor drain details on pinterest. This diagram of a typical dwv system is called a plumbing tree. The left side of the trap connects to the plumbing fixture and the right side connects to the sewer.

When installing your vents it s highly recommended that you plan out your drain lines to minimize the risk of clogging. Both kitchen 1 1 2 inches and bathroom 1 1 4 inches are smaller than the rest of the drain system on purpose. There is a p trap in the 4 cast iron under the basement slab. A note on the main drain.

I have a 1st story bathtub with a 1 1 2 pvc p trap connected within 18 to a 3 cast iron waste stack and vent. The diagram at right shows a p trap which can be found at sinks showers and bath tubs. The waste stack runs to the basement and changes from 3 to 4 cast iron 3 feet above the basement concrete slab. The diagram at right shows a p trap which can be found at sinks showers and bath tubs.

The sewer side will have sewer gases present but the water sitting in the bottom of the trap prevents the sewer gases from entering in to the house. They lead into larger branch drain pipes which lead into the 4 inch stack. Water runs down the sink drain into a p trap so called because it s shaped like the letter which fills up with water to prevent sewer gases and odors from getting into the house through the pipe. This water gets refreshed whenever more water runs through it.