Gas piping that is not protected should be installed how?

Gas piping that is not protected should be installed above grade in approved recesses or channels to ensure safety and compliance with building codes. This installation method provides the necessary support and minimizes the risk of physical damage to the gas lines. Additionally, it allows for proper inspection and maintenance, ensuring that any potential leaks can be detected more easily.

Installing gas piping underground, while sometimes appropriate in certain applications, does not account for the immediate inspection or alterations that may be required in typical maintenance routines. Similarly, placing gas piping in any easily accessible area without specific approval or consideration for location and protection could expose it to hazards that may lead to damage or leaks. Lastly, maintaining a specific distance from appliances does not address the overall requirements for the protection and proper installation of gas piping systems. Thus, using approved recesses or channels is the most reliable method for ensuring the long-term safety and integrity of the gas piping.