Gas vent pipes that terminate above roof pitches up to 6/12 need to be at least how high?

Gas vent pipes that terminate above roof pitches up to 6/12 are required to be at least one foot above the roof surface. This height ensures that the venting of gases is done safely and effectively, reducing the risk of backdrafts or the re-entry of exhaust gases into the living spaces of a building.

The one-foot requirement helps to prevent hazards by ensuring that the gases rise above the roof level, which is particularly important in residential settings where proper ventilation is needed for safety. Higher roof pitches would typically require greater heights for vents, but for pitches up to 6/12, the one-foot standard is adequate. This standard is part of the building codes and safety regulations that govern ventilation systems to maintain air quality and safety in structures.