Civil Engineering PE

Category - Hydraulics - Closed

Which of the following is the approximate head loss in a 1,500-foot long section of 6-inch diameter galvanized iron pipe conveying water at with a velocity of 5 feet/second? (Assume friction factor of 0.02)
  1. 11.7 feet
  2. 23.3 feet
  3. 46.6 feet
  4. None of the above
Explanation
Answer: B - The approximate head loss in a 1,500-foot long section of 6-inch diameter galvanized iron pipe conveying water at a velocity of 5 feet per second is 23.3 feet.

Solution: Use the Darcy-Weisbach equation

HL = f (L/D)(V2/2g)

Given,

f = Darcy friction factor = 0.02

D = 0.5 feet

L = 1,500 feet

V = 5 feet/ second

g = 32.2 feet2/second

Therefore,

HL = f (L/D)(V2/2g)

= 0.02 (1,500 / 0.5) (52/2(32.2))

= 23.3 feet
Was this helpful? Upvote!
Login to contribute your own answer or details

Top questions

Related questions

Most popular on PracticeQuiz