When installing a pressure relief line to the outside of a building, what is the maximum height above grade the end of the pipe can be?

The maximum height above grade for the end of a pressure relief line installed to the outside of a building is determined by safety and functionality considerations. Placing the terminus of the relief line at a height of 6 inches above grade ensures that the discharge can efficiently vent any accumulated pressure without the risk of being obstructed by debris, snow, or other material that might accumulate on the ground.

This height is also significant in preventing direct contact between released substances and individuals or structural elements nearby, thus enhancing safety. The standard allows for effective drainage and minimizes risks related to flooding or blockages, ensuring compliance with plumbing codes and safety regulations.