What is the maximum distance that piping supports should be spaced on a 4-inch gas line?

The maximum distance that piping supports should be spaced for a 4-inch gas line is 15 feet. This guideline is based on industry standards for ensuring the integrity and safety of gas piping systems. Proper support spacing is essential in preventing sagging or undue stress on the pipes, which can lead to leaks or other hazards.

Intermediate supports are crucial, especially with larger piping systems, as they help maintain alignment and reduce the risk of damage caused by thermal expansion or external forces. Adhering to this spacing requirement not only promotes safety but also ensures compliance with regulatory standards, which typically dictate the maximum allowable support distances for various pipe sizes.

The options that suggest distances greater than 15 feet would not provide adequate support for a 4-inch gas line, potentially compromising the system's integrity. Therefore, 15 feet is recognized as the maximum safe distance for support spacing in this case.