What is the friction loss for a 5" hose flowing 600 GPM?

For a 5-inch hose flowing 600 gallons per minute (GPM), the friction loss can be determined using established formulas and data. In hydraulic calculations, the friction loss for a fire hose primarily depends on the hose diameter and the flow rate.

In this case, for a 5-inch diameter hose at a flow rate of 600 GPM, the friction loss is typically around 1 psi per 100 feet of hose. This is consistent with the hydraulic calculations that suggest larger diameter hoses have lower friction loss for a given flow compared to smaller diameter hoses.

Generally, thicker hoses allow for smoother water flow, which reduces turbulence and resistance, leading to a lower pressure drop over distance. Therefore, when using a 5-inch hose, the established friction loss for that specific flow rate aligns with the choice indicating 1 psi per 100 feet. This value is useful for firefighters and engineers when planning water supply operations and calculating the necessary pump pressures for effective firefighting operations.