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IRC Building Code Questions with correct Answers 2024
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IRC Building Code Questions with correct Answers 2024
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IRC Building Code Questions withcorrect Answers 2024
In Seismic Design Categories D0, D1, and D2, _____ stone masonry walls shall
not be used. - -Rubble
R404.1.1.1 Masonry foundation walls. -In Seismic Design Categories Do, D1 and D2, foundations with stem walls shall be provided with a minimum of one No. ___ bar within 12 inches of the top of the wall and one No. ___ bar located 3 to 4 inches from the bottom of the footing. - -#4
#4
R403.1.3.1 Foundations with stemwalls -The grade away from foundation walls shall fall a minimum of ___ inches within the first ____ feet. - -6 in.
10 ft.
(Read exception)
R401.3 Drainage -In flood hazard areas, enclosed areas below the design flood elevation shall
be used sole for:
1._____
2._____
3._____ - -Parking of vehicles
Building access or
Storage
R322.3.5 Enclosed areas below design flood elevation. -Address number shall be a minimum of ___ inches high with a minimum stroke of ____inch. - -4 in.
1/2 in.
R319.1 Address numbers -Protection of wood and wood based products from ___ shall be provided by the use of naturally durable wood or wood that is preservative treated. - -
Decay
R317.1 Location required -Dwelling Units in two-family dwellings shall be separated from each other by wall and/or floor assemblies having not less than ___-hour fire resistive rating. - -1 hour
R302.3 Two family dwellings -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. - -6 in.
R318.4 Foam plastic protection -A thermal barrier is not required for foam plastic insulation in an attic that is entered only for purposes of ____ or ____. - -Repairs or maintenance
R316.5.3 Attics -Foam plastic shall be separated from the interior of a building by an approved ____ ____ of minimum ____- inch gypsum wallboard. - -Thermal barrier
1/2 in.
R316.4 Thermal barrier -All exterior footings shall be placed at least ___ inches below the undisturbed ground surface. - -12 in.
(Where applicable, the dept of footings shall also conform to R403.1.4.1 - R403.1.4.2)
R403.1.4 Minimum length -The top surface of footings shall be level. The bottom surface of footings shall not have a slope exceeding ____ unit vertical in ____ units horizontal. - -
1:10
R403.1.5 Slope -Wood sill plates shall be anchored to the foundation with anchor bolts spaced a maximum of ____ feet on center. - -6 ft.
R403.1.6 Foundation anchorage -Foundation anchor bolts shall be at least ___ inch in diameter and shall extend a minimum of ___ inches into the concrete or grouted cells of concrete masonry units. - -1/2 in.
7 in. R403.1.6 Foundation anchorage -Isolated hollow masonry piers shall have a minimum nominal thickness of ____ inches. - -8 in.
R404.1.9 Isolated masonry piers. -Hollow masonry piers shall be capped with ____ inches of solid masonry or concrete or a masonry cap block. - -4 in.
As an alternative, the cavities of of the top course must be filled with concrete or grout.
R404.1.9.1 -The studs used in wood foundation walls shall be ____-inch by ____-inch members. - -2-inch by 6-inch
R404.2.2 Stud size -Wood sill plates shall be a minimum of ____-inch by ____-inch nominal lumber. - -2-inch by 4-inch
R404.3 Wood sill plates -Perforated foundation drains shall be surrounded with an approved ____ ____. - -Filter membrane
(or the filter membrane shall cover the washed gravel or crushed rock covering the drain)
R405.1 Concrete or masonry foundations -The minimum net area of ventilation openings shall be not less than ____ square foot for each ___ square feet of under-floor space. - -1 sq. ft. for each 150 sq. ft.
R408.1 Ventilation -Ventilation openings in under-floor spaces are not required where the ground is covered with a continuous ____ vapor retarder and the joints overlap at least ____ inches. - -Class I
6
R408.3 Unvented crawl space -The minimum required floor access opening to all under-floor spaces shall be ____ inches by ____ inches. - -18 inches by 24 inches.
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