What is the minimum pressure required at the highest standpipe outlet during operation?

The minimum pressure required at the highest standpipe outlet during operation is established to ensure adequate water flow for firefighting purposes. This pressure ensures that water can reach the highest point in the building where the standpipe system is installed, which is crucial for effective suppression of fires.

A pressure of 100 psi is considered the standard requirement because it accounts for the elevation of the water column due to gravity and any potential friction loss in the piping system. This pressure threshold helps maintain a water flow sufficient to reach firefighters at strategic locations on upper floors, thus enabling them to effectively combat fire situations.

Understanding this pressure requirement is vital for ensuring the safety and effectiveness of fire-fighting operations, as inadequate pressure at any outlet could compromise fire suppression efforts. Proper maintenance and testing of standpipe systems are necessary to ensure they can deliver this minimum pressure when needed.