I'm installing sewer pipes for a new shower, toilet, and sink. Wrapping PVC pipe in concrete; Author: clesnick What material can I use to wrap PVC pipe where it is under a concrete floor? It seems to me that they should be wrapped to allow for expansion and avoid chemical reaction between the pvc and concrete. The job can be simple and cost-effective when the correct preparations and techniques are applied. The Sch 40 PVC is overkill because DB or EB can be used. concealed or encased in concrete are not permitted for branch wiring when installed in patient care areas. My state code requires the pipes to be wrapped where they penetrate concrete but when I described this and asked for wrapping material at … We use 90C Schedule 40 PVC in concrete encasement quite often. BTW, if you use 105C-rated conductors you cannot use the 105C ampacity when installed in 90C-rated conduit. Due to pitch requirements, I can't put them under the slab. Moreover, it is self-insulating. Also, it can withstand higher water pressure than the copper. This is what I have been told by our state inspectors. How can PVC pipe be used as reinforcement in concrete? Sch 80 is only used where physical damage is likely (exposed walls, pole risers, etc.) Pour the mixed concrete around the PVC pipe, using a large, metal funnel or a spade. I failed to leave water running during the recent freezing temperatures and my pipes have frozen. all of these need concrete poured over them. https://terrylove.com/.../can-pvc-be-encased-horizontally-in-concrete.66968 Pack the layer directly underneath the PVC pipe; it should be packed tight to create a solid, firm foundation and to prevent cracking during temperature fluctuations. PVC and CPVC type water pipe and fittings are not allowed for use in the City. Another advantage is that PCV can be placed under concrete slab without reacting to the concrete. (When a laundry room and bathroom were added on to this house, the water pipes were ran then a concrete floor was poured over them.) The problem is of easing your mind and a personal choice of if you can live with pipe … Also, PCV is non-conductive, will not rust, and is not as conducive to condensation. Most of my water pipes are laid in (encased in) concrete. If the concrete is on grade then it is considered a wet location and unless there is another protective coating on EMT it cannot be use. Pack the concrete around the PVC pipe to prevent air gaps. PVC is allowed to be encased within concrete and it will last longer the you and I will live. PVC pipe is not a conventional reinforcement used in concrete in the way that fiber reinforcement, rebar, wire mesh, or other reinforcing materials are. They have to be directly in it. Then,as you have stated,if it were on the fourth floor then EMT with the correct connectors can be use with out a protective coating. Pouring concrete around PVC pipes can be useful in a variety of household and industrial applications, such as building garden ponds or installing outdoor plumbing. In addition, PCV is less noisy at higher water pressure levels. Exceptions: (A) Schedule 40 meeting ASTM D1785 (or better) PVC water pipe may be used where permitted by the IPC, but only if: (i) it is installed underground (but see next paragraph requiring copper lines in some locations) or as pool piping, (ii) all joints PVC must be used.