Gas Pipe Sleeve Under Concrete Floor

This byot diy project details how to get a sprinkler pipe under an existing concrete slab side walk.

Gas pipe sleeve under concrete floor.

If it is under a concrete pad then it has to be in a sealed pressure tested and vented sleeve. Where piping in floor channels is exposed to excessive moisture or corrosive substances the piping shall be protected in an approved manner. The sleeve shall be two pipe sizes greater than the pipe passing through the wall. Always sleeve the pipe where it passes through solid walls or floors.

If it is feasible to keep the pipe inside the sleeve dry by means of suitable end seals. Any section of the pipe installed inside concrete or steel pipe sleeves should be coated to at least the same standard as the remainder of the pipeline. This is a step by step tutorial on how a stepped drill b. Borrowed from jerry s post on another thread.

This will ensure freedom from corrosion. Outdoors typically the pipe going under a sidewalk laterally can be in a sleeve that extends past the concrete on either side. Build the sleeve into the wall or floor and seal the gap between the gas pipe and sleeve with flexible fire resistant compound at at least one end as in figure 4.