2.2 Pipe Repair Normally, pipes with minor damages can be repaired quickly and easily at the job site by a qualified individual. They had been wrapped in hessian or similar stuff but it looks like the lime or acids or whatever in the concrete has got to the copper as they have failed over 14 years. The AML uses ultra-high radio frequencies, to locate underground PVC pipe. I would steer away from various thin wall PVC. Plastic pipes have a relatively low modulus and expand considerably under internal pressure for PVC-U about 0.5% long term, and for PVC-O and PVC-M around 0.8%. A 1-person installation can be challenging unless you’re using a PEX uncoiler or PEX rails. SSI designed this unit specifically for the water, utility, cable and gas industries. . Both, internal and external surfaces, shall be free from any irregularities that might impair the ability of the component to conform to the requirements. Install PVC Pipe and fittings in strict accordance with the installation recommendations of the pipe and fittings manufacturer, Appendix X1 of ASTM D2265 (Storage and Installation Procedures for PVC Plastic Drain, Waste, and Vent Piping) and for buried pipe ASTM D2321 Can I just lay the pipe on the bottom of the trench and cover it with concrete? You'd need to sleeve something like black, galvanized, or no-hub iron pipe, but PVC and ABS are impervious on any reasonable timeline (~hundreds of years.) The UL listing says both 80 and 40 can be used in both above and underground installations. Do not use pipe that appears damaged or defective. Running along underneath the channel drain I need to bury a 3" PVC pipe. For PE strains up to 4% are possible. PVC pipe embedded in concrete should be fine under most codes I've seen. Your supply lines can be ran through framing in most cases. You could have your inspector come through before the pour to check out your plumbing permit if needed. Without getting into an overblown and IMO unnecessary reinforcement project possibly encasing the pipe in concrete, the only other more practical option I can think of is to use 4” sch. I've cut and excavated the concrete but have some questions on how I should put the pipe in. If possible put only your drain lines sub-slab. The pipe carries water from a downspout and will connect to the channel drain at the end of it. The copper pipes were buried in the concrete floor when the kitchen was extended in 1993. 40 PVC . Cost-wise, an uncoiler can range anywhere between $280-300 for basic and $400-500 and above for professional models. When a pipe is surrounded by concrete or cement grout, transfer of a large proportion of the stress from the plastic pipe to the concrete occurs. 80 vs. sch. however at larger diameters, it starts to get more pricy. In a 2-person installation, one is uncoiling the pipe, while the other secures it at intervals ~3ft. Locating subsurface PVC pipe is not an easy process, and it requires a unique process. The UL listing says both 80 and 40 can be used in both above and underground installations. The flexible pipe is designed for internal pressure by classical methods. Schedule 40 rigid PVC conduit, elbows, that are specifically marked for underground use are suitable for use underground only by direct burial or encasement in concrete. The pipe is an impermeable liner in a concrete conduit. . Wrapping PVC pipe in concrete; Author: clesnick What material can I use to wrap PVC pipe where it is under a concrete floor? if you use PVC or other ridgid pipe under concrete youre asking for nothing but trouble at your joints or your stress cracks. When subjected to heavy external loads, buried flexible pipes are sometimes encased in concrete. Schedule 40 rigid PVC conduit, elbows, that are specifically marked for underground use are suitable for use underground only by direct burial or encasement in concrete. The encasement holds the flexible pipe in its circular shape and supports most of the external load. RWalters | Nov 18, 2003 11:13pm | #6. My state code requires the pipes to be wrapped where they penetrate concrete but when I described this and asked for wrapping material at …