How far above grade must gas vent pipes exit in relation to public walkways?

Gas vent pipes must exit a minimum of 7 feet above grade in relation to public walkways to ensure safety and compliance with plumbing codes. This height is designed to prevent the possibility of gas exhaust causing harm to pedestrians who may be walking beneath the vent. By placing the vent at this height, it reduces the risk of gas accumulation in areas where people gather, thereby mitigating potential health and safety hazards.

Maintaining this distance not only adheres to safety regulations but also helps in minimizing the impact of wind or other environmental factors that could affect the dispersion of gases. It is crucial for plumbing contractors to understand these requirements to ensure proper installation and compliance with local building codes.