IRC Building Code

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IRC Building Code 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 The ends of each floor joist, beam or girder shall have not less than ____ inches of bearing on wood or metal and not less than ____ inches on masonry or concrete. - ✔✔1.5 in. 3 in. (except where supported on a 1 inch by 4 inch ribbon strip and nailed to the adjacent stud or by the use of approved joist hangers. This is the same for rafters and ceiling joists. R502.6 Bearing Notches in solid lumber joists, rafters and beams shall not exceed ____ of the depth, shall not be longer than ____ of the depth, and shall not be located in the middle ____ of the span. - ✔✔1/6 in. 1/3 in. 1/3 in. R502.8.1 Sawn lumber. The tension side of floor joist members ___ i [Show More]

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