Fire pumps are selected based on ________________________.

Fire pumps are selected primarily based on flow and pressure calculations because these factors are critical in ensuring that the fire suppression system can provide adequate water supply and pressure to effectively combat a fire. Flow refers to the volume of water that the pump can deliver, typically measured in gallons per minute (GPM), which is essential for meeting the demands of fire protection systems. Pressure calculations ensure that the water can reach the necessary heights and distances during an emergency, overcoming the system's losses due to friction and elevation.

Understanding the basic principles of hydraulic calculations is vital for ensuring that enough water is not only available but can also be delivered at the necessary pressure. Both flow and pressure must meet the requirements set by relevant standards and codes for fire protection systems. Fire code compliance, load calculations, building height, and occupancy type all play a role in these calculations, making accurate assessments essential to choosing the appropriate fire pump for the application.

While factors such as pump-driver horsepower, specific codes, or standards like NFPA 13D and NFPA 24 contribute to the overall pump selection process, they ultimately depend on satisfying the fundamental requirements of flow and pressure. These calculations serve as the foundation upon which all other considerations are built, ensuring that the fire protection system operates effectively when needed