What friction rate should be used to size a duct for a design ...

[BRWH]

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]

Answer to Question 1

B

Answer to Question 2

B

[BRWH]

TY

[chloejackso]

You're welcome