General Examination for Plumbing #1 Exam Questions with Verified Answers
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Course
Plumbing
Institution
Plumbing
Building sewers shall be tested by completely filling the sewer with water from the ______ - Answer-Lowest to the highest point
Except for plastic piping systems, HOT AND COLD water piping may be tested with ___ - Answer-50 psi air or the working pressure of the water in the systems for at least...
General Examination for Plumbing #1
Exam Questions with Verified Answers
Building sewers shall be tested by completely filling the sewer with water from the
______ - Answer-Lowest to the highest point
Except for plastic piping systems, HOT AND COLD water piping may be tested with ___
- Answer-50 psi air or the working pressure of the water in the systems for at least 15
minutes
The required clearance in front of a 2-inch cleanout is _______ inches. - Answer-18
inches
A stack, as defined in the code, is.... - Answer-The vertical main of soil, waste, or vent
piping that extends one or more stories
Under no circumstances may gas appliance pressure regulators be vented .... -
Answer-...to the gas utilization equipment flue or exhaust system.
"Aboveground schedule 40 PVC and ABS DWV plastic piping installed horizontally shall
be supported at intervals of not to exceed_______ feet. - Answer-4 feet
When sizing a copper fuel-gas piping system that has an inlet pressure of less than 2
psi with a pressure drop of 0.3 inch w.c, the maximum cubic feet per hour of gas flow
allowed through a 5/8 inch OD. ACR tube 75 feet in developed length is ___ - Answer-
27
A Type B-W gas vent shall terminate at least ___ feet in vertical height above the
bottom of the wall furnace. - Answer-12 feet
The maximum horizontal distance of a trap arm is measured from the inner edge of the
vent to the..... - Answer-weir of the trap
The maximum number of lavatories on a 2 inch horizontal waste line is.... - Answer-8
Sleeves shall be provided to protect piping ____ and _______ walls. - Answer-masonry
& concrete walls.
PEX piping one inch and smaller installed horizontally shall be supported at intervals
NOT exceeding how many inches? - Answer-32 inches
The minimum common horizontal waste pipe serving a bathtub, a lavatory, and a
kitchen sink shall be AT LEAST how many inches? - Answer-2 inches
, The required clearance in front of a 3 inch CLEANOUT is how many inches? - Answer-
24 inches
A refrigerator used to store food and that requires drainage shall be drained by means
of...... - Answer-indirect waste pipe
Sheet metal, constituting a part of any vent connector, shall be at least how many
inches. - Answer-0.0304
One material NOT approved for the installation of an external trap for a urinal is.... -
Answer-drawn-copper, alloy tubing traps
Hub and spigot cast-iron piping in 10-foot lengths, installed horizontally, shall be
supported at intervals of not more than ___ feet. - Answer-10 feet
A drain connecting the compartments of a set of fixture to a trap is called a (an) -
Answer-continuous waste
A device to prevent back flow into the potable water system is called a....... - Answer-
backflow preventer
Copper tube and fittings for drainage and vent piping installed above ground shall be at
least ________ - Answer-Type DWV
A ____ shall be permitted to be installed with indirect waste. - Answer-drinking fountain
Vitrified clay pipe and fitting are _____. - Answer-approved for use as a building drain
and shall be kept NOT less than 12 inches below ground.
Cast-iron soil pipe shall NOT be - Answer-threaded
All trenches deeper than the footing of any building or structure and paralleling the
same must be at least _____ from the bottom exterior edge of the footing or as
approved. - Answer-45 degrees
Sewer or other drainage piping that shall not be installed under or within 2 feet of any
building or structure is..... - Answer-SDR 35 sewer pipe
Cast-iron soil pipe shall be supported at.... - Answer-their base and each floor
Water service pipes, or any other underground pipes, shall NOT be run or laid in the
same trench with ______ unless specific conditions are met. - Answer-SDR 35 sewer
piping
Notifications for inspections of work authorized by the permit shall be made - Answer-
NOT LESS than 24 hrs BEFOREEE the work has to be inspected
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