What is the hose coefficient for 3 inch hose?

What is the hose coefficient for 3 inch hose?

• A. 1
• B. 0.5
• C. 2
• D. 3

Answer: (B)

The hose coefficient is a factor used in friction-loss calculations that represents how much resistance the hose itself adds to the flow. It depends on the hose diameter and construction, and larger diameter hose carries water with less resistance, so the coefficient is smaller. For a 3-inch hose, the standard reference value is 0.5. This lower coefficient reflects that a larger hose experiences less friction per unit of flow than smaller hoses. Using a higher value would overstate the hose’s resistance, while 0.5 accurately characterizes the reduced friction in a 3-inch line.

The hose coefficient is a factor used in friction-loss calculations that represents how much resistance the hose itself adds to the flow. It depends on the hose diameter and construction, and larger diameter hose carries water with less resistance, so the coefficient is smaller.

For a 3-inch hose, the standard reference value is 0.5. This lower coefficient reflects that a larger hose experiences less friction per unit of flow than smaller hoses. Using a higher value would overstate the hose’s resistance, while 0.5 accurately characterizes the reduced friction in a 3-inch line.