PE Problem #39

8/27/2020

What length of 6-inch Schedule 40 black steel pipe would provide the same friction loss as 24 feet of 4-inch schedule 10 black steel pipe if both are serving a wet sprinkler system at the same flow rate?
a. 4 ft
b. 34 ft
c. 135 ft
d. 173 ft

Solution | Posted 08/28/20

4 Comments

8/27/2020 09:49:07 am

134.0826286

Feet

NinaB

8/27/2020 10:48:06 am

c. Pf.l.=134.62 ft=135 ft

8/28/2020 11:36:11 am

8/28/2020 03:42:47 pm

Why are they using the formula for Hazen-Williams Pressure Loss and not friction loss, like the question asks? If you us the friction lost equation (Darcy-Weisbach) you would get answer (b) 34 ft?

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