Systems (Residential and General Plumbing)2026-
2027 Comprehensive Frequently Tested Exam
Questions With Verified Multiple Choice and
Conceptual Actual 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. A vertical vent that is a continuation of the drain to which it connects -
ANSWER Continuous vent
2. A piping system designed to control and convey excess ground water to a
suitable location - ANSWER Storm water drainage piping
3. When no public sewer intended to serve any lot or premises is available in
any thoroughfare or right of way abutting such a lot of premises, drainage
piping from the building shall be connected to ___________________. -
ANSWER Private sewage disposal system
4. A unit which is equivalent to the flow rate of one (1) cubic foot of water per
minute or 7-1/2 gpm of water is _______________. - ANSWER Fixture
unit
5. Roof joint shall be ______________. - ANSWER Watertight
,6. A fixture designed for the washing of hands or face, sometimes called wash
basin - ANSWER Lavatory
7. A condition in the distribution system where it could damage or create
condition that will damage components of the distribution system or create
a nuisance is termed as ________________. - ANSWER Excessive water
pressure
8. A stack as defined in the code - ANSWER Vertical main soil, waste or
vent piping
9. Air pressure in drainage pipes greater than the atmospheric pressure -
ANSWER Back pressure
10.No clevical toilet shall be installed in any building unless first approved by
the __________________. - ANSWER Health officer
11.All water supply, drainage, venting system and all fixtures and their traps
complete with their connection - ANSWER Plumbing system
12.The minimum diameter size of water supply pipe to lavatory - ANSWER
3/8"
13.Request for inspection by the master plumber to the administrative
authority is required to be made in advance at least before the work to be
tested - ANSWER 72 hours
, 14.The vertical distance that waste travels through open air between the waste
pipe and the indirect waste receptor - ANSWER Air gap
15.A means of measurement for vertical waste or soil stack. It is equal to each
floor level or storey in a building but are always eight-feet intervals -
ANSWER Branch interval
16.A drain connecting the compartments of a certain fixture to its trap is called
________________. - ANSWER Continuous waste
17.Rain water is _______________. - ANSWER Storm water
18.A pipe fitting used to reduce the size of an opening is called ___________. -
ANSWER Bushing
19.The minimum pressure that should be maintained for fixtures containing
flush tank supplies - ANSWER 8psi
20.A piece of chemical fitted under another piece of flat metal or wood over
which water is expected to run - ANSWER Gutter
21.Supports anchorage of piping shall not exceed an interval of _____. -
ANSWER 10'