Which two methods are used to compute fire-flow test results?

Which two methods are used to compute fire-flow test results?

• A. Test summary sheets and hydraulic formulas
• B. Determining available water supply and type of underground distribution system
• C. Flow charts and pressure graphs
• D. Graphical analysis and mathematical computations

Answer: (D)

Fire-flow test results are determined by two complementary approaches: graphical analysis of the collected data and mathematical computations using hydraulics formulas. Graphical analysis involves plotting the measured pressures and flows to visually interpret how the system behaves as flow increases, which helps identify the available fire flow and how it relates to demand. Mathematical computations then apply the relevant hydraulic equations to convert those measurements into a precise fire-flow value and residual pressures, accounting for losses in the distribution system. The other options describe data collection or documentation aspects rather than the methods used to derive the final numerical result.

Fire-flow test results are determined by two complementary approaches: graphical analysis of the collected data and mathematical computations using hydraulics formulas. Graphical analysis involves plotting the measured pressures and flows to visually interpret how the system behaves as flow increases, which helps identify the available fire flow and how it relates to demand. Mathematical computations then apply the relevant hydraulic equations to convert those measurements into a precise fire-flow value and residual pressures, accounting for losses in the distribution system. The other options describe data collection or documentation aspects rather than the methods used to derive the final numerical result.