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Using the Hazen-Williams formula, determine the friction loss in 150 ft (45.7 m) of 1 in. (25 mm) black steel schedule
40 pipe, flowing 30 gpm (115 lpm) in a wet system.
Suggested Answer: A
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Using the Hazen-Williams formula, the friction loss in 150 feet of 1-inch black steel schedule 40 pipe flowing 30 gpm in a wet system would be approximately 27.5 psi. This calculation considers the pipe's material, size, length, and flow rate.
32 comments · newest first
MA
Malcom
10 months ago
Totally with you, Laurel! B feels spot on!
CO
Corazon
11 months ago
Wait, 57.9 psi? That seems way too high for that setup!
CO
Cory
11 months ago
I calculated it too, and I got C. Not sure about B.
LA
Laurel
11 months ago
I think it's definitely B, seems right to me.
SH
Sherman
11 months ago
The Hazen-Williams formula is key for this!
CA
Catrice
12 months ago
I remember the formula involves the diameter and length, but I’m a bit confused about how to apply it to get the right psi.
QU
Queenie
12 months ago
I feel like the flow rate really affects the friction loss, but I can't recall how to apply it correctly here.
AL
Alease
12 months ago
I think I did a similar question where we calculated friction loss in a longer pipe. I might lean towards option B, but I need to double-check my calculations.
ST
Stephaine
1 year ago
I remember practicing the Hazen-Williams formula, but I'm not sure about the exact coefficients for steel pipe.
UN
Una
1 year ago
I've got this! The Hazen-Williams formula is second nature to me at this point. I'll work through it step-by-step and nail the right answer.
TA
Tayna
1 year ago
This looks straightforward enough. I just need to be careful with the unit conversions and make sure I'm using the right values in the formula.
AL
Alesia
1 year ago
Okay, let's see. I need to plug in the pipe length, diameter, and flow rate into the Hazen-Williams equation. Then I can calculate the friction loss and compare it to the answer choices.
LO
Lon
1 year ago
Hmm, I'm a bit unsure about how to apply the Hazen-Williams formula correctly here. I'll need to review the formula and make sure I have the right variables.
MY
Myra
1 year ago
I think I can handle this one. The Hazen-Williams formula should give me the friction loss in the pipe based on the flow rate and pipe dimensions.
LU
Luis
2 years ago
This question is a pipe dream, but I think the answer is C. Pipe down, everyone else!
KR
Kristofer
2 years ago
I agree with you, C seems to be the correct answer.
MA
Man
2 years ago
I'm going with C.
RE
Reita
2 years ago
I believe it's B.
TI
Timothy
2 years ago
I think the answer is A.
TE
Terrilyn
2 years ago
Definitely D, 57.9 psi (3.99 bar). No way it's only 27.5 psi (1.89 bar) with that small of a pipe.
RE
Reita
2 years ago
Hmm, C looks like the right answer to me. 52.2 psi (3.6 bar) seems about right for that pipe and flow rate.
AN
Anglea
2 years ago
I agree with you, C seems to be the most fitting answer. 52.2 psi (3.6 bar) makes sense for this situation.
JI
Jill
2 years ago
I'm leaning towards B. 41.3 psi (2.93 bar) seems like it could be the right friction loss for that setup.
TR
Truman
2 years ago
I think A is the correct answer. 27.5 psi (1.89 bar) sounds more accurate for this scenario.
NI
Nina
2 years ago
I'm not sure, but I think the answer might be D) 57.9 psi (3.99 bar)
EF
Effie
2 years ago
I think the answer is B, 41.3 psi (2.93 bar). The Hazen-Williams formula is the way to go for this one.
LO
Lore
2 years ago
Let's review the formula together to make sure we are on the right track.
TH
Thaddeus
2 years ago
I calculated it again, and I still believe the answer is B, 41.3 psi (2.93 bar).
AS
Ashlee
2 years ago
I think the answer might be C, 52.2 psi (3.6 bar). Let's double-check the calculations.
MA
Marva
2 years ago
I agree, the Hazen-Williams formula is the best approach for this calculation.
RE
Regenia
2 years ago
I disagree, I believe the correct answer is C) 52.2 psi (3.6 bar)
BE
Bette
2 years ago
I think the answer is A) 27.5 psi (1.89 bar)