What is the flow rate of the 300ft of 21⁄2" attack line?

The flow rate of a 300-foot length of a 2 1/2-inch attack line is typically calculated based on established guidelines for fire hose and nozzle performance. The correct answer of 265 gallons per minute is based on common practices and operational standards in firefighting.

In fire service operations, it is often cited that a 2 1/2-inch line can flow upwards of 250-300 gallons per minute depending on various factors, including nozzle type, pressure, and the specific configuration of the attack line. A typical flow rate for such a setup is approximately 265 gallons per minute, which is a standard figure used by many fire departments.

This information is essential for firefighters to understand the capabilities of their equipment and how to effectively manage water supply during firefighting operations. Properly knowing the flow rate ensures that crews can adequately staff and supply the line, which is vital for effective fire suppression.

Therefore, the choice of 265 gallons per minute reflects a standard flow rate for a 300-foot 2 1/2-inch attack line, given the parameters typically associated with this size and type of hose.