Can plastic gas piping penetrate foundation?

Can plastic gas piping penetrate foundation?

• A. Yes
• B. No
• C. Only with permit
• D. Only above ground

Answer: (B)

Piping through a building’s foundation is a point where the installation must remain highly protected from damage and movement. Plastic gas piping is not permitted to penetrate a foundation because concrete, backfill, and settlement can subject the pipe to stress, impact, or crushing, which can lead to leaks or failures. To cross a foundation, the code requires a metal path through the foundation (or a protective, listed sleeve with appropriate material on the inside) to maintain mechanical integrity and gas-tightness. So plastic piping should not penetrate the foundation.

Piping through a building’s foundation is a point where the installation must remain highly protected from damage and movement. Plastic gas piping is not permitted to penetrate a foundation because concrete, backfill, and settlement can subject the pipe to stress, impact, or crushing, which can lead to leaks or failures. To cross a foundation, the code requires a metal path through the foundation (or a protective, listed sleeve with appropriate material on the inside) to maintain mechanical integrity and gas-tightness. So plastic piping should not penetrate the foundation.