Exam (Elaborations) IRC Building Code |Latest Update Graded A+
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IRC
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IRC
Exam (Elaborations) IRC Building Code |Latest Update Graded A+
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 wi...
Exam (Elaborations) IRC Building Code |
Latest Update Graded A+
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.
R408.4 Access
Open web truss or I-Joist floor assemblies require a ____-inch gypsum wallboard membrane, ____-
inch wood structural panel membrane, or the equivalent on the underside.
1/2 gypsum
5/8 wood
R501.3 Fire protection of floors
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