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// CODE SNIPPET

2308.5.5.1 Openings in Exterior Bearing Walls

Building Code 2018 of Illinois > 23 Wood > 2308 Conventional Light-Frame Construction > 2308.5 Wall Construction > 2308.5.5 Openings in Walls and Partitions > 2308.5.5.1 Openings in Exterior Bearing Walls
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Headers shall be provided over each opening in exterior bearing walls. The size and spans in Table 2308.4.1.1(1) are permitted to be used for one- and two-family dwellings. Headers for other buildings shall be designed in accordance with Section 2301.2, Item 1 or 2. Headers of two or more pieces of nominal 2-inch (51 mm) framing lumber set on edge shall be permitted in accordance with Table 2308.4.1.1(1) and nailed together in accordance with Table 2304.10.1 or of solid lumber of equivalent size.
Single-member headers of nominal 2-inch (51 mm) thickness shall be framed with a single flat 2-inch-nominal (51 mm) member or wall plate not less in width than the wall studs on the top and bottom of the header in accordance with Figures 2308.5.5.1(1) and 2308.5.5.1(2) and face nailed to the top and bottom of the header with 10d box nails [3 inches × 0.128 inches (76 mm × 3.3 mm)] spaced 12 inches (305 mm) on center.
Wall studs shall support the ends of the header in accordance with Table 2308.4.1.1(1). Each end of a lintel or header shall have a bearing length of not less than 11/2 inches (38 mm) for the full width of the lintel.
FIGURE 2308.5.5.1(1)
SINGLE-MEMBER HEADER IN EXTERIOR BEARING WALL
FIGURE 2308.5.5.1(2)
ALTERNATIVE SINGLE-MEMBER HEADER WITHOUT CRIPPLE

Related Code Sections


2308.5.5.1 Wood, Openings in Exterior Bearing Walls
Headers shall be provided over each opening in exterior bearing walls. The size and spans in Table 2308.4.1.1(1) are permitted to be used for one ...
Building Code 2021 of Illinois > 23 Wood > 2308 Conventional Light-Frame Construction > 2308.5 Wall Construction > 2308.5.5 Openings in Walls and Partitions > 2308.5.5.1 Openings in Exterior Bearing Walls
2308.5.5.1 Wood, Openings in Exterior Bearing Walls
Headers shall be provided over each opening in exterior bearing walls. The size and spans in Table 2308.4.1.1(1) are permitted to be used for one ...
Building Code 2018 of Illinois > 23 Wood > 2308 Conventional Light-Frame Construction > 2308.5 Wall Construction > 2308.5.5 Openings in Walls and Partitions > 2308.5.5.1 Openings in Exterior Bearing Walls
705.8.1 Fire and Smoke Protection Features, Allowable Area of Openings
The maximum area of unprotected and protected openings permitted in an exterior wall in any story of a building shall not exceed the percentages ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.1 Allowable Area of Openings
705.8.1 Fire and Smoke Protection Features, Allowable Area of Openings
The maximum area of unprotected and protected openings permitted in an exterior wall in any story of a building shall not exceed the percentages ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.1 Allowable Area of Openings
703.2.1.5 Fire and Smoke Protection Features, Exterior Bearing Walls
In determining the fire-resistance rating of exterior bearing walls, compliance with the ASTM E119 or UL 263 criteria for unexposed surface ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 703 Fire-Resistance Ratings and Fire Tests > 703.2 Fire Resistance > 703.2.1 Tested Assemblies > 703.2.1.5 Exterior Bearing Walls
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