3/4 inch steel fuel gas piping installed horizontally must be supported at intervals not exceeding what distance?

The correct answer identifies that 3/4 inch steel fuel gas piping must be supported at intervals not exceeding 8 feet when installed horizontally. This requirement is based on safety practices to ensure the structural integrity of the piping system. Adequate support is crucial because it helps prevent sagging, vibrations, or movement that could lead to physical damage or leaks in the gas line.

When gas piping is not adequately supported, it can experience stress that may compromise the joints and seams, potentially leading to hazardous situations such as gas leaks. Therefore, building codes and safety standards specify these support intervals to maintain the proper functionality and safety of fuel gas installations.

The choice of 8 feet aligns with industry standards, which recognize the need for balancing support and practicality in installation. Using a shorter distance for support may be unnecessary and could complicate the installation process without providing significant additional safety benefits. However, selecting a distance longer than 8 feet would likely exceed the capacity of the piping to remain secure and stable, thus introducing risks.