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Author Question: What friction rate should be used to size a duct for a design friction rate of 0.12 in WC if the ... (Read 71 times)

BRWH

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on: Jul 24, 2018
What friction rate should be used to size a duct for a design friction rate of 0.12 in WC if the duct has a total equivalent length of 150 ft?
 
  A) 0.12  (150/100 ) = 0.12  1.5 = 0.18 in WC B) 0.12  (100/150 ) = 0.67  0.12 = 0.08 in WC
  C) 0.1 in wc because that is the standard factor D) 0.12 in WC because the duct length is irrelevant

Question 2

Organizations that provide duct installation standards and guidelines include:
 
  A) EPA and OSHA.
  B) ACCA and SMACNA.
  C) Underwriters Laboratories and the National Fire Protection Association.
  D) AHRI and HVAC Excellence.


chloejackso

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Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

B


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BRWH

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Reply #2 on: Jul 24, 2018
TY


chloejackso

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Reply #3 on: Jul 24, 2018
You're welcome


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