Why is positioning as close to the water source important in hose lay planning?

• A. To Minimize Friction Loss
• B. To Maximize Nozzle Pressure
• C. To Shorten Distance to Hydrant
• D. To Reduce Pump Discharge Time

Answer: (A)

In hose lay planning, the main hydraulic concern is friction loss in the supply hose. Friction loss is the pressure drop that occurs as water moves through hoses, fittings, and valves, and it increases with flow rate and with hose length. By placing the pump as close as practical to the hydrant, you shorten the length of supply hose water must flow through before reaching the pump, which reduces the total friction loss. Less friction loss means more pressure remains available to the attack line, helping you maintain the required nozzle pressure and deliver the desired flow. The other options either describe outcomes influenced by pump settings or misplace the focus on distance rather than the resulting pressure loss.