Final answer:
Rooftop gas piping should be supported at regular intervals, usually every 6 feet horizontally and every 10 feet vertically, to ensure safety and compliance with building codes.
Step-by-step explanation:
Rooftop gas piping should be supported at regular intervals to ensure the safety and stability of the system. The exact spacing of the supports will depend on various factors such as the type of gas piping material, the diameter of the pipe, and the local building codes. In general, most building codes require gas piping to be supported every 6 feet horizontally and every 10 feet vertically. However, it's important to consult local codes and regulations as they may vary. For instance, steel gas piping typically requires support every 6 to 10 feet, depending on the specific code being adhered to. It's important to consult current building codes or standards such as the International Fuel Gas Code (IFGC) or the Uniform Mechanical Code (UMC) that provide guidelines for the support requirements. In summary, the support interval for rooftop gas piping will vary and must be in accordance with the applicable codes and regulations to ensure safety and proper function.