What water supply and drainage pipes are needed for the residential houses under construction

I am doing construction engineering installation, there may be some differences in different regions, take us as an example, water supply outdoor HDPE pipe, the main water supply pipe network diameter of DE200 down 160 to 110 into the household, indoor PPR, generally DE to do the main pipe, branch pipe, 25 into the household, 20 outlets, that is to say, HDPE pipe from 110 to 200, PPR pipe from 20 to 90 must be ready, of course, there are elbows, tees, reducers, bending, reducing tees, valves and other accessories to be complete. PVCU for drainage room, DE110 hollow-wall spiral silencing pipe for standpipe, and solid-wall pipe, DE must be ready, including accessories, flexible cast iron pipe for outdoor, PVC corrugated pipe for outdoor drainage, commonly used 160 250 or larger (determined according to the design).

When doing the foundation, the upper and lower water pipes should be dudu down to the foundation, at this time, you should plan which room needs to have water pipes, and connect the pipes to the room, and the room where the toilet is installed must measure the hole spacing of the toilet in the reserved toilet drain outlet, and the current toilet is generally more than 40 and 50 cm hole spacing. Also think about the location of the floor drain.

The floor heating pipe is laid on the ground before the floor tiles are laid after the building is built, and the floor tiles are laid out after the layout.

When the main structure is constructed, leave a pipe hole. After capping, install drainage risers and water supply pipes before ground construction.

should be poured on each layer before concrete.

Do you want to install water pipes for water pipe drainage in the old community? Hello, I am happy to answer for you<> the drainage of water pipes in the old community should be installed and stored in the drainage pipes of the old community, and it is best not to change it, and the smaller the change, the better. The toilet drainage pipe in the old community can also be changed to the "Building Water Supply and Drainage Design Code" (GB50015-2003) Article stipulates that when the sanitary appliances without a trap in the structure are connected with the domestic sewage pipe or other drainage pipes that may produce harmful gases, a trap must be set up below the drain, and the thickness of the water seal of the trap shall not be less than 50mm.

This provision is mandatory and must be strictly enforced. Have a trap because you have to drain into the sewer, and you have to install a trap to keep the smell from the drain from back up to your home. It is best not to reverse the water bend (water trap) when the drainage is buried in the ground, which is mainly due to the fact that once the drainage pipe is blocked, there is no way to dredge it.

Then there is the bathroom and kitchen that are easy to resist the smell upward, and there are anti-water bends on the sewer pipes in both places, so there is no need and should not install anti-bends on the drainage pipes buried in the ground. Hope mine can help you <>

Do you have any other questions?

1.You have to say that the residential unit drainage system is composed, the indoor drainage horizontal pipe is discharged into the drainage riser and then connected to the discharge pipe to the outdoor community drainage pipe, and the community drainage system includes the unit discharge pipe into the sewage inspection well, and the community sewage pipe enters the septic tank and comes out simply, and finally discharges into the large municipal drainage pipe.