NC Plumbing License Exam Questions with Correct Answers 100% Verified By Experts| Latest
Update Guaranteed Success
Osha 300 A must be posted when? between February 1st and April 30th
Open Vent Pipes are not to be less than ___ feet above roof if on open deck or area where roof
is used 7
Regular Roof Vents are to not bee less than ____ inches 6
Juncture of Vent Pipe to Roof must be __ water tight
Location of Vent Terminals 10 foot horizontal 2 foot vertical
Every Building has to have 1 _____ not less than half the diameter of the building drain. Not to
be less than _____ inches undiminished or changing in size stack, 2 inches
Pumps Fixture Unit 2
Ice Maker Fixture Unit 1/2 or 0.5
Find what in your schematics first? Water Closets
What is your minimum size main vent? 2 inches
If you have a 7 gpm heat pump, what is the Fixture Unit value 14 (2xgpm rate)
Branch Interval Definition 8 feet or more
, What Page in your Plumbing Code Book are the Drain Charts on? 67 and 68
Wier Dam
Constant for 45 Degree Angle 1.41 x offset in inches
Vent Stack Required when _____ branch intervals or more 5
Relief Vent A vent whose primary function is to provide circulation of air between drainage
and vent systems.
Yoke Vent A Pipe connecting upward from a soil or waste stack to a vent stack for the
purpose of preventing pressure changes in the stack
Vent for Below 10 or more branch intervals called Yoke vent if not listed relief vent. Yoke is
always more descriptive
Distance of Fixture Trap from Vent Use Page 78 in Code Book
There is a minimum ____ pipe diameter between the wier and the trap 2
Individual Vent 1 Trap
Common Vent 2 traps
Stacked Vent more than 2 traps
Update Guaranteed Success
Osha 300 A must be posted when? between February 1st and April 30th
Open Vent Pipes are not to be less than ___ feet above roof if on open deck or area where roof
is used 7
Regular Roof Vents are to not bee less than ____ inches 6
Juncture of Vent Pipe to Roof must be __ water tight
Location of Vent Terminals 10 foot horizontal 2 foot vertical
Every Building has to have 1 _____ not less than half the diameter of the building drain. Not to
be less than _____ inches undiminished or changing in size stack, 2 inches
Pumps Fixture Unit 2
Ice Maker Fixture Unit 1/2 or 0.5
Find what in your schematics first? Water Closets
What is your minimum size main vent? 2 inches
If you have a 7 gpm heat pump, what is the Fixture Unit value 14 (2xgpm rate)
Branch Interval Definition 8 feet or more
, What Page in your Plumbing Code Book are the Drain Charts on? 67 and 68
Wier Dam
Constant for 45 Degree Angle 1.41 x offset in inches
Vent Stack Required when _____ branch intervals or more 5
Relief Vent A vent whose primary function is to provide circulation of air between drainage
and vent systems.
Yoke Vent A Pipe connecting upward from a soil or waste stack to a vent stack for the
purpose of preventing pressure changes in the stack
Vent for Below 10 or more branch intervals called Yoke vent if not listed relief vent. Yoke is
always more descriptive
Distance of Fixture Trap from Vent Use Page 78 in Code Book
There is a minimum ____ pipe diameter between the wier and the trap 2
Individual Vent 1 Trap
Common Vent 2 traps
Stacked Vent more than 2 traps
