A pressure-relief valve, vented outside the building, should be pointed downward and how far above ground?

A pressure-relief valve that is vented outside the building must be positioned appropriately to ensure safety and functionality. The correct positioning, which is specified to be vented downward, helps direct any released gases safely away from the structure and ensures they disperse into the atmosphere rather than accumulating near the building.

The requirement for the vent opening to be 6 to 24 inches above ground ensures that the valve is positioned high enough to avoid obstructing the ground and reduce the risk of any potential blockages from snow, debris, or other environmental factors. This height also helps prevent any possible accumulation of harmful gases or flammable materials from being inadvertently trapped near the outlet, maintaining a safe environment around the building.

By adhering to this guidance, you help ensure compliance with safety codes, protect the integrity of the structure, and safeguard those in and around the building.