3. Session 21.

Question 0

13. A grease interceptor may be used in lieu of an individual fixture trap if the developed length from the fixture outlet to the inlet of the interceptor is not more than:
A. 12".
B. 24".
C. 36".
D. 48".

Answer 0

D. 48”.( By new code 60” and not more than30” vertically),

Question 1

19. For shower heads, a constant water pressure of 60 pounds per square inch, and a maximum flow under Local Law 29-89 not to exceed:
A. 1.6 gallons per minute.
B. 1 35 gallons per minute.
C. 3 gallons per minute.
D. 3.5 gallons per minute.

Answer 1

C. 3 gallons per minute.

2 gpm by new code

Question 2

20. Under Local Law 29-89 for urinals and associated flush-vlves, if any, each flush shall not exceed:
A. 1.6 gallons per flush.
B. 1 gallon per flush.
C. 3 gallon per flush.
D. 2 gallon per flush.

Answer 2

B. 1 gallon per flush.

0.5 gallon by New Code

Question 3

37. The supply lines or fittings for every plumbing fixture shall be so installed as to:
A. Flow at even times.
B. Prevent stoppages.
C. Prevent back-flow.
D. Supply 7.5 gallons per minute.

Answer 3

C. Prevent back-flow.

Question 4

42. Frost-proof water closets used for temporary installations only will be:
    A. Prohibited.
    B. Permitted by the Commissioner.
    C. Permitted.
    D. Allowed if the fire Commissioner permits.

Answer 4

B. Permitted by the Commissioner.