When conducting a water flow test from one hydrant, what type of information is collected?

When conducting a water flow test from one hydrant, the type of information collected includes static pressure and residual pressure. Static pressure refers to the pressure in the system when no water is flowing, essentially the pressure available in the water main. Residual pressure, on the other hand, is the pressure measured while water is flowing from the hydrant. This measurement is significant because it indicates how much pressure is available to the system while delivering water, which is crucial for understanding the performance of fire protection systems.

Collectively, static and residual pressures are used to assess the ability of the water supply to maintain adequate pressure for firefighting or other demands, making this combination vital for system evaluations. This data helps in determining the available flow and ensuring that the hydrant can provide sufficient water for emergency situations. In practicing water flow tests, it's essential to accurately measure both of these pressures to gather a comprehensive understanding of the system's capabilities.