What is the primary characteristic of static pressure?

Static pressure refers to the pressure within a fluid system when the fluid is not in motion. In a fire suppression context, this means that static pressure is measured when there is no water flowing through the lines or hoses. It reflects the potential energy in the water, allowing firefighters to understand how much pressure is available to push water through the system when it is activated.

Understanding static pressure is crucial because it helps firefighters calculate the amount of available pressure for fighting fires under various conditions. When water is flowing, the dynamic pressure comes into play, which can be influenced by factors such as the velocity of the water and the configuration of the hoses. Thus, the concept of static pressure is fundamental in hydraulic calculations and water supply management for firefighting operations.