Which customary formula is used to conduct elevation pressure loss calculations on the fireground?

The formula used to conduct elevation pressure loss calculations is based on the principle that for every vertical foot of elevation, there is a corresponding pressure loss due to gravity. The correct formula is 0.5 times the height in feet. This means that for every foot of elevation gained, the pressure in the hose will decrease by 0.5 psi.

This 0.5 psi per foot loss is critical for firefighters to understand as it allows them to calculate the necessary pressure adjustments needed to ensure adequate water supply when operating at different elevations. Firefighters often encounter situations where they need to account for the elevation of the building they are combating a fire in, particularly in hilly areas or multi-story structures.

Understanding this calculation is vital for ensuring successful fire suppression efforts and maintaining the effectiveness of fireground operations.