What is the typical flow rate range for interior hand-lines?

The typical flow rate range for interior hand-lines is accurately represented by the choice that states 12-325 gallons per minute (gpm). This flow rate is crucial for effectively combating structural fires within buildings, as it helps ensure that firefighters can deliver enough water to suppress flames and cool the environment to protect against fire spread.

Hand-lines are often used for initial attack on fires in residential or commercial structures, and the specified range allows for flexibility depending on the intensity and size of the fire. A flow rate of 12 gpm may be suitable for smaller or incipient stage fires, while a flow rate approaching 325 gpm can be used for more intense fires that require a robust water supply to effectively control the situation.

Understanding this range helps firefighters select the appropriate equipment and tactics for fire suppression, ensuring that they can adapt to varying conditions encountered on the fireground.