CPD Codes, Regulations, & Standards 3

Question 1

Per the IPC, what is the maximum developed length of a trap arm from trap weir to vent for a 1.5-inch drain?

Accepted Answer

5 feet

Answer

The IPC limits the trap arm length for a 1.5-inch pipe to 5 feet from the trap weir to the vent.

Question 2

AWWA C651 covers which of the following plumbing/piping-related subjects?

Accepted Answer

Disinfecting water mains

Answer

AWWA C651 is the standard for disinfecting water mains, covering chlorination procedures after installation or repair.

Question 3

Which ASSE standard applies to the performance of reduced pressure principle backflow preventers?

Accepted Answer

ASSE 1013

Answer

ASSE 1013 establishes performance requirements for reduced pressure principle backflow preventers (RP assemblies).

Question 4

Under the IPC, a sanitary drainage system discharging into a public sewer requires what minimum grade for a 4-inch horizontal drain?

Accepted Answer

1/8 inch per foot

Answer

The IPC requires 4-inch horizontal sanitary drains to slope a minimum of 1/8 inch per foot toward the point of discharge.

Question 5

Which code body adopts and publishes the Uniform Plumbing Code (UPC)?

Accepted Answer

IAPMO

Answer

The International Association of Plumbing and Mechanical Officials (IAPMO) publishes and maintains the Uniform Plumbing Code.

(CPD) Certified Plumbing Designer Practice Test