IRC 2018 EXAM | 100 Questions with 100% Correct Answers
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Course
IRC
Institution
Liberty University
Type I handrails with a circular cross section shall have an outside diameter of at least ____ inches and not greater than ____ inches. Correct Answer: 1 1/4
2
Open sided walking surfaces located more than ____ inches above the floor or grade below, shall have guards not less than ____ inches ...
irc 2018 exam | 100 questions with 100 correct answers
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IRC 2018 EXAM | 100 Questions with 100%
Correct Answers
Type I handrails with a circular cross section shall have an outside diameter of at least ____
inches and not greater than ____ inches. Correct Answer: 1 1/4
2
Open sided walking surfaces located more than ____ inches above the floor or grade below, shall
have guards not less than ____ inches in height. Correct Answer: 30
36
Required guards shall not have openings from the walking surface to the required guard height
which allow passage of a sphere ___ inches in diameter. Correct Answer: 4
An automatic residential fire sprinkler system is not required where _______ or _______ are
made to existing townhouses that do not have an automatic residential fire sprinkler. Correct
Answer: additions
alterations
Smoke alarms shall be installed in the following locations:
1. ___________
2. ___________
3. ___________ Correct Answer: In each sleeping room
Outside each separate sleeping area
On each additional story of the dwelling
Basements and habitable attics require smoke detectors, but ________ ________ and
___________ ___________ do not. Correct Answer: crawl spaces
uninhabitable attics
Photoelectric smoke alarms shall not be installed less than ___________ feet horizontally from a
permanently installed cooking appliance.
(Unless it would prevent the placement of an alarm in a required location.) Correct Answer: 6
Required smoke alarms shall receive their primary power from the building wiring, and when
primary power is interrupted, shall receive power from a ____. Correct Answer: battery
Physical interconnection of smoke alarms is not required where ____ ___ alarms are installed.
(All alarms must sound upon activation of one alarm.) Correct Answer: listed wireless
For new construction, an approved carbon monoxide alarm shall be installed in what locations?
(CO alarms are not required if there are no fuel-fired appliances and no attached garage.) Correct
Answer: Outside of each separate sleeping area in the immediate vicinity of the bedrooms.
, Foam plastic shall have a flame spread index of not more than ___________ and shall have a
smoke-developed index of not more than ___________. Correct Answer: 75
450
Foam plastic shall be separated from the interior of a building by an approved ____ ____ of not
less than ____- inch gypsum wallboard.
(Also acceptable is minimum 23/32 inch wood structural panels or a material that is tested in
accordance with NFPA 275.) Correct Answer: thermal barrier
1/2
A thermal barrier is not required for foam plastic insulation in an attic that is entered only for
purposes of ___________ or ___________.
(The foam plastic insulation must be protected with approved ignition barrier materials.) Correct
Answer: repairs
maintenance
In areas where the probability of termite infestation is "very heavy," the clearance between foam
plastics installed above grade and exposed earth shall be at least ____ inches. Correct Answer: 6
Dwelling units in two-family dwellings shall be separated from each other by wall and floor
assemblies having not less than ___________-hour fire-resistance rating.
(A fire-resistance rating of 1/2 hour is permitted in sprinklered buildings.) Correct Answer: 1
Protection of wood and wood based products from ___________ shall be provided in specified
locations by the use of naturally durable wood or wood that is preservative treated.
(Preservative treatment shall be in accordance with AWPA U1 for the species, product,
preservative, and end use.) Correct Answer: decay
The minimum thickness of masonry bearing walls more than one story high shall be
___________ inches. Correct Answer: 8
Solid masonry walls of one-story dwellings and garages shall not be less than ____ inches in
thickness when not greater than 9 feet in height. Correct Answer: 6
(... provided that where gable construction is used an additional 6 feet is permitted to the peak of
the gable.)
Grout shall not be pumped through ___________ pipes. Correct Answer: aluminum
The provisions for structural insulated panel walls are limited to buildings not greater than
___________ stories in height with each wall not greater than ___________ feet high.
(The provisions are also limited to a ground snow load of 70 psf and Seismic Design Categories
A, B, and C.) Correct Answer: two (2)
10
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