How often must 3/4" steel fuel gas piping installed horizontally be supported?

The correct answer indicates that 3/4" steel fuel gas piping installed horizontally must be supported at intervals of no more than 8 feet. This requirement is based on industry standards that aim to ensure the structural integrity and safety of gas piping systems. Supporting the piping at these intervals prevents sagging or bending, which could lead to potential leaks or mechanical failure.

The 8-foot support rule accommodates the physical characteristics of steel and the expected loads that the piping may encounter during its service life, including thermal expansion, contraction, and any external forces. Proper support also simplifies maintenance and inspection activities, promoting a safer working environment.

Understanding these support requirements is essential for any plumbing professional to ensure compliance with local codes and best practices, ultimately contributing to a reliable gas distribution system.