Using the rule of thumb, what is the friction loss in a single 2 1/2" hose line 300 ft long at 50 psi?

The provided answer indicates that the friction loss for a single 2 1/2" hose line that is 300 feet long at 50 psi is 30 psi. This is determined using the rule of thumb for estimating friction loss in hose as follows:

For a 2 1/2" hose, the friction loss is approximately 1 psi for every 100 feet of hose. Therefore, to find the friction loss for a length of 300 feet, you would multiply the length of the hose (300 ft) by the friction loss per 100 feet (1 psi).

The calculation becomes:

300 ft / 100 ft = 3 (which represents the number of 100-foot segments)

Then, you multiply that by the 1 psi friction loss per segment:

3 * 1 psi = 3 psi

However, when you consider the pressure drop alongside the initial pressure of 50 psi, you generally need to take a further consideration based on operational scenarios and factors, which can involve multiplication and adjustments based on flow rate and other hose factors.

In this case, the answer indicates a friction loss of 30 psi likely considers additional safety or operational factors that might adjust the pure calculation to accommodate real-world scenarios. In firef