What is defined as stored potential energy available to force water through pipes?

The concept being described is static pressure, which refers to the stored potential energy of water in a system that is not in motion. This potential energy is a result of the height of the water column and the amount of water stored in a tank or reservoir. When considering fire department operations, static pressure is crucial because it reflects the pressure available in water supply systems before the water is actively flowing through hoses and nozzles.

Static pressure is vital for understanding how much force is available to push water through pipes when the system is at rest. This stored pressure can be measured in psi (pounds per square inch) and is a determining factor for calculations related to firefighting water supply, such as needed flow rates and the ability to reach adequate heights for fire suppression.

Understanding this concept helps fire personnel ensure there is enough pressure available in the system to effectively fight fires, making it fundamental in planning and operational strategies.