To reduce pressure loss due to friction in hoses, which method is recommended?

Using larger diameter hoses is the recommended method to reduce pressure loss due to friction in hoses. The fundamental principle behind this recommendation is that the friction loss in a hose is significantly influenced by its diameter; a larger diameter allows for a greater flow area. This results in lower velocity of the water per unit of flow, which in turn reduces the frictional forces acting on the water as it moves through the hose.

In fire scenarios, having adequate water pressure and flow is critical for effective firefighting. When larger diameter hoses are used, they facilitate a more efficient transport of water, allowing for higher volumes to reach the nozzle with minimal loss of pressure compared to smaller hoses. This is particularly important in high-demand situations where the ability to deliver large quantities of water rapidly can make a significant difference in controlling a fire.

The other options do not adhere to this principle. For instance, using longer hoses typically increases friction loss, as does increasing the number of bends in the hose, both of which restrict flow and can lead to reduced pressure at the nozzle. Shortening the discharge distance may seem like a practical solution, but it doesn't directly address hose diameter and can sometimes create its own set of challenges. Thus, opting for larger diameter hoses is a proven method to