What is the amount of friction loss for each length of 2 1/2 inch hose?

The amount of friction loss for each length of 2 1/2 inch hose is established as 5 psi per 100 feet of hose. This standard is widely recognized in firefighting training and is rooted in hydraulic principles, which are essential for understanding how water flows through hoses during firefighting operations.

When water travels through a hose, it encounters resistance due to the internal surface of the hose and any bends, kinks, or fittings along the way. This resistance leads to a loss of pressure, known as friction loss. Firefighters need to account for this loss to ensure adequate pressure is available at the nozzle when fighting fires.

Since the question specifically references 2 1/2 inch hose, which often serves in large volume fire attacks, the acknowledgment of 5 psi per 100 feet allows firefighters to calculate more effectively for long stretches of hose, which is crucial during operations where distance from the water source can significantly impact fire suppression efforts.