Gas Pipe Sleeve Under Concrete Floor

Outdoors typically the pipe going under a sidewalk laterally can be in a sleeve that extends past the concrete on either side.

Gas pipe sleeve under concrete floor.

A pipe that passes through a foundation wall shall be provided with a relieving arch or a pipe sleeve shall be built into the foundation wall. Where piping in floor channels is exposed to excessive moisture or corrosive substances the piping shall be protected in an approved manner. 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.

In industrial occupancies gas piping in solid floors such as concrete shall be laid in channels in the floor and covered to permit access to the piping with minimum damage to the building. If it is under a concrete pad then it has to be in a sealed pressure tested and vented sleeve. 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. The sleeve shall be two pipe sizes greater than the pipe passing through the wall.

Borrowed from jerry s post on another thread. This is a step by step tutorial on how a stepped drill b. 1 where the service pipe to any building having two or more floors to which gas is supplied or whether or not it has more than one floor a floor having areas with a separate supply of gas has an internal diameter of 50 mm or more no person shall install any incoming installation pipework supplying gas to any of those floors or areas as.