Exam Question Bank with Correct
Solutions
What degree is used for isometric drawings? - ANSWER-60 degrees
What is the recommended minimum of minutes for chlorine water
management? - ANSWER-20-30 minutes
When you need to repair a single handle lavatory faucet, what needs to be
replaced? - ANSWER-O ring
Galvanic corrosion of water supply piping can occur where - ANSWER-steel
pipe is joined to a dissimilar metal pipe
Whenever necessary to make an inspection to enforce any of the provisions
of the Code, an authorized representative may enter the premises -
ANSWER-at all reasonable times
,After completion of work and testing of sewer pipeline, who shall request
inspection? - ANSWER-Supervisor of job at job-site
If the Administrative Authority requests that a new type of material be used
on a project, who pays for the testing of the new material? - ANSWER-
Contractor
When plumbing work is inspected and a "notice of correction" is served, how
many days does the contractor have to correct the work? - ANSWER-Within
10 days
What is the vertical distance called that is between the lowest opening of a
pipe fixture or appurtenance that is discharging waste to the overflow level
of a fixture? - ANSWER-Airgap, drainage
A cleanout which has direct access without the necessity of removing any
panel or door is defined to be - ANSWER-readily accessible
Distribution of water from any other source than intended is - ANSWER-
backflow
,Back-siphonage is defined as - ANSWER-the flowing back of used,
contaminated or polluted water from a plumbing fixture or vessel into a
water supply pipe due to a negative pressure in such pipe
The _________________________ is the pipe which carries potable water from a
water meter to a building. - ANSWER-building supply
Backflow is defined as - ANSWER-non-potable water or other liquids entering
a potable water system
Any group of two or more similar adjacent fixtures that discharge into a
common horizontal waste branch is defined as a - ANSWER-battery
Which of the following connects one or more individual vents to a vent stack?
- ANSWER-Branch vent
A combination waste and vent system may be installed on a
_______________________ piping system. - ANSWER-horizontal
, A horizontal pipe is any pipe or fitting which is installed in a horizontal
position or which makes an angle of less than _________ degrees with the
horizontal. - ANSWER-45
What statement is true about industrial waste? - ANSWER-It is free of fecal
matter.
The "invert" elevation of a sewer line is the ____________________ of the pipe. -
ANSWER-inside bottom
The minimum level at which a vacuum breaker may be installed above the
flood level rim of the device and service is called - ANSWER-the critical level
The "the critical level" is shown on a backflow prevention device by a
_______________ marking. - ANSWER-C-L or C/L
When a backflow prevention device does not bear a "critical level" marking,
which part of the device constitutes the critical level? - ANSWER-Bottom
What is the Critical Level on a backflow device? - ANSWER-Bottom