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Fire Hose Friction Loss Calculation Chart
Try using this chart to solve for the friction loss for 150 ft of 1.75" hose at 200
GPM. The answer
is at the
bottom of the page.
Example:
Find the friction loss calculations for 150 feet of 1.75 inch fire
hose with 200 GPM of flow.
Friction loss for 100 ft 1.75 inch fire hose is 62.0 PSI. For the remainding 50
ft, divide 62 PSI by 2 and you get 31 PSI.
62psi (100 ft) + 31psi (50 ft) =
93 PSI friction loss for 150 ft section of 1.75 inch fire hose at 200
GPM.
Methods to determining friction loss calculations:
- The
Friction Loss Formula
calculates friction loss for fire hose between 3/4" & 6" and is the most
accurate method. But, determining friction loss with this method is the most
time intensive, has a high probablity for human error, and is not very practical in the field or for learning hydraulics
theory.
- The
Friction Loss Calculator will calculate Friction loss for
any size fire hose between 3/4" & 6". This method uses the friction loss
formula to perform calculations and is just as accurate.
- The Friction Loss Slide Rule can provide calculations for a wide variety of
hose sizes and is faster than the friction loss formula, but it has a higher
probability for human error, and the slide rule is the least accurate of the
three methods.
- The Friction Loss Chart
(by FireEngineAcademy.com) provides a friction loss chart for each size
of hose between 3/4" & 6". The Friction Loss Grid
is a little more bulky, but is the easiest, fastest, and a very accurate method of
determining friction loss.
- Information about Hardware Friction
Loss.
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