Which size hose line is usually adequate for overhaul operations?

The use of 1 ½" or 1 ¾" hose lines for overhaul operations is appropriate because these sizes strike a balance between maneuverability and water flow. During overhaul, firefighters work to ensure that all hot spots are thoroughly extinguished and check for any hidden fires that may reignite.

The 1 ½" or 1 ¾" lines provide adequate pressure and water volume to effectively cool areas that have burned while still being manageable in terms of weight and flexibility. This allows firefighters to move around easily in potentially constrained or hazardous environments where they are conducting thorough searches for remaining fire.

In contrast, smaller hose sizes like ¾" do not deliver sufficient flow for effective overhaul, as the water pressure and volume may not be enough to adequately address the potential re-ignition of fire. On the other hand, larger hose sizes such as 2 ½" can be unwieldy and challenging to maneuver in tight spaces, making them less practical for detailed overhaul work.