What is the maximum operating pressure for piping systems located inside buildings?

The maximum operating pressure for piping systems located inside buildings is typically established to ensure safety and to comply with building codes and regulations. In this context, a limit of 5 psig is widely recognized as the maximum pressure for gas piping systems in structures. This standard helps to minimize the risks associated with gas leaks or system failures, which can have hazardous consequences in enclosed environments.

Maintaining the pressure at or below this threshold is critical for preventing potential damage to the building's infrastructure, as well as ensuring the safety of its occupants. Systems designed to operate at levels higher than this may pose an increased risk of failure or leaks, thereby exceeding safe operational practices.

Therefore, 5 psig is established as a safe operational limit for indoor piping systems, striking a balance between functionality and safety concerns inherent in such installations.