What is the coefficient for a 3" hose?

The coefficient for a 3" hose is 0.49, which is based on the standard calculations used in water flow and friction loss. This coefficient represents the friction loss per 100 feet of hose at a given flow rate and provides important data for fire operations. Understanding the coefficient is essential for determining the effectiveness and efficiency of water delivery in firefighting scenarios.

When the water flows through a 3" hose, the friction loss increases with the length of the hose and the rate of flow. The value of 0.49 comes from empirical data and is commonly used in hydraulic calculations, making it crucial for fire suppression tactics. Properly applying this coefficient helps ensure that firefighters can make informed decisions regarding water supply and pressure requirements to effectively combat fires.

Other coefficients listed do not match the established standard for a 3" hose, displaying different calculated values for other hose diameters or different conditions that would not apply to a 3" hose in standard firefighting operation scenarios. Understanding and utilizing the correct coefficient allows for accurate calculations of necessary pressure and flow, ultimately impacting the success of firefighting efforts.