2022 IRC Exam Prediction
Storm drainage sump pumps shall be of a capacity and head appropriate to _______ use
requirements. - ✔✔anticipated
Electrical services within the scope of the IRC are limited to _____-volt, 0-
...
2022 IRC Exam Prediction
Storm drainage sump pumps shall be of a capacity and head appropriate to _______ use
requirements. - ✔✔anticipated
Electrical services within the scope of the IRC are limited to _____-volt, 0- to _____- ampere,
single-phase systems. - ✔✔120/240 & 400
Boiler pressure-relief valve discharge shall be pipes to drains by gravity to within _____ inches
of the floor or to an open receptor. - ✔✔18
Polyethylene tubing for hydronic piping systems shall be installed with _____ ______ joints. -
✔✔heat fusion
The maximum amount of fuel oil stored above ground or inside a building shall be _____
gallons. - ✔✔660 (The supply tank shall be supported on rigid noncombustible supports to
prevent settling or shifting)
Vent piping on oil tanks shall be not smaller than _____-inch pipe. - ✔✔1 1/4
Oil tank vent piping shall terminate outside of building at a point not less than _____ feet,
measured vertically or horizontally, from any building opening. - ✔✔2
Components of a solar thermal energy system that might be subject to pressure drops below
atmospheric pressure during operations shall be protected by a _____-_____ _____. -
✔✔vacuum-relief valve
The minimum unobstructed total area of the outside and return air ducts or openings to a forced
air warm-air FURNACE shall not be less than _____ square inches for each 1000 Btu/h output
rating. - ✔✔2 (This also applies to supply ducts.)
Domestic clothes dryer transition ducts shall be metal and limited to a single length not to exceed
_____ feet. - ✔✔8 (Transition ducts shall not be concealed within construction.)
What size are fuel-gas-fired domestic clothes dryer ducts? - ✔✔4 inches
The lowest portion of a gas floor furnace shall have not less than ______-inch clearance from
grade level. - ✔✔6 (Except where the lower 6-inch portion of the floor furnace is sealed by the
manufacturer to prevent entrance of water, the minimum clearance shall be reduced to not less
than 2 inches.)
Vent connectors for draft-hood-equipped appliances shall not be _____ than the draft hood outlet
diameter. - ✔✔smaller
A Type B-W gas vent shall terminate at least _____ feet in vertical height above the bottom of
the wall furnace. - ✔✔12
A Type B or a Type L gas vent shall terminate at least _____ feet in vertical height above the
highest connected APPLIANCE DRAFT HOOD or FLUE COLLAR. - ✔✔5
Gas APPLIANCE shutoff valves shall be located in the same room as the APPLIANCE and not
further than _____ feet from the APPLIANCE. - ✔✔6 (Each appliance shall be provided with a
shutoff valve separate from the appliance.)
Fuel gas appliance connectors shall not exceed an overall length of _____ feet. - ✔✔6
Gas vents over 12 inches in size shall terminate not less than _____ feet above the highest point
where they pass through the roof. - ✔✔2 (Amd at least 2 feet higher than any portion of a
building within 10 feet)
Underground fuel gas PIPING SYSTEMS shall be installed a minimum depth of _____ inches
below grade. - ✔✔12 (Except that individual lines to outside lights, grills or other appliances
shall be installed a minimum of 8 inches below grade, provided it is not subject to physical
damage.)
Shield plates, when required to cover the area of concealed gas piping, shall be a minimum
_____ gage. - ✔✔No. 16
Where gas piping is concealed and run within _____ inches from the framing member face to
which the membranes will be attached it shall be protected by shield plates. - ✔✔1 1/2
Fuel gas PIPING installed across roof surfaces shall be elevated not less than _____ inches
above the roof surface. - ✔✔3 1/2
BTU is the abbreviation for _____ _____ _____, which is the quantity of heat required to raise
the temperature of 1 pound of water 1°F. - ✔✔British Thermal Unit
When doing a water test on DWV systems during rough-in plumbing, each section shall be filled
with water to a point not less than _____ feet above the highest fitting in that section. - ✔✔5
(Water shall be held in the section under test for 15 minutes. The system shall prove leak free by
visual inspection.)
When doing an air test on DWV systems during rough-in plumbing, the portion under test shall
be maintained at _____ psi for _____ minutes. - ✔✔5 & 15
Water service pipe shall be installed not less than _____ inches deep and not less than _____
inches below frost line. - ✔✔12 & 6
Trenching installed parallel to footings shall not extend below the _____-degree bearing plane of
the bottom edge of a wall or footing. - ✔✔45
In plumbing systems, supports for 1-inch copper or copper allow tubing run horizontal shall not
be spaced more than _____ feet apart. - ✔✔6 (Review and know how to use this table.)
Fixture tail pieces shall not be less than _____ inches in diameter for sinks, dishwashers, laundry
tubs and similar fixtures. - ✔✔1 1/2 (And not less than 1 1/4 inches in diameter for bidets,
lavatories and similar fixtures. )
The center line of water closets or bidets shall not be set less than _____ inches from adjacent
side walls or partitions. - ✔✔15
There shall be at least _____ inches clearance in front of the water closet, bidet or lavatory to any
wall, fixture or door. - ✔✔21
Waste receptor standpipes shall extend a minimum of _____ inches and a maximum of _____
inches above the trap weir. - ✔✔18 & 42 (Access shall be provides to all standpipe traps and
drains for rodding.)
Shower compartments shall have at least _____ square inches of interior cross-secrional area. -
✔✔900
Lavatories shall have waste outlets not less than _____ inches in diameter. - ✔✔1 1/4 (A
strainer, pop-up stoper, crossbar or other device shall be provided to restrict the clear opening of
the waste outlet.)
Bathtubs shall be equipped with waste outlets and overflow outlets connected to piping at least
_____ inches in diameter. - ✔✔1 1/2 (The waste outlet shall be equipped with an approved
stopper.)
Sinks shall be provided with waste outlets not less than _____ inches in diameter. - ✔✔1 1/2 (A
strainer, crossbar or other device shall be provided to restrict the clear opening of the waste
outlet.)
Each compartment of a laundry tub shall be provided with a waste outlet not less than _____
inches in diameter. - ✔✔1 1/2 (A strainer or crossbar to restrict the clear opening of the waste
outlet.)
Floor drains shall have waste outlets not less than _____ inches in diameter and a removable
strainer. - ✔✔2 (Floor drains shall not be located under or have their access restricted by
permanently installed appliances.)
Bottom fed tank-type water heaters and bottom fed tanks connected to water heaters shall have a
_____ _____ valve installed. - ✔✔vacuum_relief (In compliance with ANSI Z21.22)
The maximum static pressure OF A WATER SERVICE shall be _____ psi. - ✔✔80
The minimum size water service pipe shall be _____ inch. - ✔✔3/4
A _____-_____ fire sprinkler system shall be seperate and independent from the water
distribution system. - ✔✔stand alone (A multipurpose fire sprinkler system shall supply
domestic water to both fire sprinklers and plumbing fixtures.)
The fire sprinkler water supply shall provide the required design flow rate for _____ minutes for
one-story dwellings less than _____ square feet in area. - ✔✔7 & 2000
Where chlorine is uses for disinfection in nonpotable water systems, the water shall contain not
more than _____ ppm of chloramines or free chl
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