Can plastic gas piping penetrate foundation?

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Prepare for the NFPA 54 National Fuel Gas Code Test. Enhance your knowledge with multiple-choice questions and flashcards, complete with hints and detailed explanations. Get exam-ready now!

Multiple Choice

Can plastic gas piping penetrate foundation?

Explanation:
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.

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