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• IBC 2308.1

  General

  • Conventional light-frame construction for buildings within 2308.2 limits; detached one- and two-family homes and townhouses up to three stories use the IRC.

  Works withIBC 2308.2.1IBC 2308.2IRC

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• IBC 2308.10

  Wall bracing

  • Requirements for wall bracing; see linked sections.

  Works withIBC 2308.10.1IBC 2308.10.10.2

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• IBC 2308.11

  Roof and ceiling framing

  • Requirements for roof and ceiling framing.

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• IBC 2308.10.1

  Braced wall lines

  • Braced wall lines per Table 2308.10.1: max 35 ft apart (25 ft in SDC D–E), panels at each end and every 25 ft, minimum bracing percentage by SDC.

  Works withIRC R602.10IBC 2308.10.3IBC Table 2308.10.1

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• IBC 2308.10.2

  Braced wall panels

  • Requirements for braced wall panels; see linked sections.

  Works withIBC Table 2308.10.1

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• IBC 2308.10.3

  Braced wall panel methods

  • Requirements for braced wall panel methods; see linked sections.

  Works withIBC 2308.10.4IBC 2308.10.5IBC 2506.2IBC 2510IBC 2308.10.5.1IBC 2308.10.5.2IBC 2308.10IBC Table 2304.10.2

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• IBC 2308.10.4

  Braced wall panel construction

  • Braced panels at least 48 in long (gypsum board 96 in one side or 48 in both).

  Works withIBC 2308.10.7IBC 2308.10.7.2

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• IBC 2308.10.5

  Alternative bracing

  • Requirements for alternative bracing; see linked sections.

  Works withIBC Table 2308.10.1

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• IBC 2308.10.6

  Cripple wall bracing

  • Requirements for cripple wall bracing; see linked sections.

  Works withIBC 2308.10.6.1IBC 2308.10.6.2

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• IBC 2308.10.7

  Connections of braced wall panels

  • Requirements for connections of braced wall panels.

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• IBC 2308.10.8

  Braced wall line and diaphragm support

  • Requirements for braced wall line and diaphragm support.

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• IBC 2308.10.9

  Attachment of sheathing

  • Requirements for attachment of sheathing.

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• IBC 2308.11.1

  Ceiling joist spans

  • Ceiling joist spans per Tables 2308.11.1(1)/(2).

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• IBC 2308.11.2

  Rafter spans

  • Rafter spans per Tables 2308.11.2(1)–(6), adjusted per Table 2308.11.2(7) when ties sit high in the attic.

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• IBC 2308.11.3

  Ceiling joist and rafter framing

  • Rafters meet opposite each other at a ridge board at least 1 in thick and as deep as the rafter cut; hips and valleys 2 in.

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• IBC 2308.11.4

  Wind uplift

  • Rafters and trusses are tied down for uplift per Table 2308.11.4 (e.g. 120 mph, Exposure B, 32 ft span: 377 lb at 24 in o.c.).

  Works withIRC R802.11IBC 1609.3

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• IBC 2308.11.5

  Framing around openings

  • Requirements for framing around openings.

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• IBC 2308.11.6

  Purlins

  • Purlins: 2×4 spans 4 ft, 2×6 spans 6 ft; struts at least 2×4, 45° or steeper, max 8 ft unbraced.

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• IBC 2308.11.7

  Blocking

  • Requirements for blocking; see linked sections.

  Works withIBC 2308.8.6IBC 2308.10.7.2

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• IBC 2308.11.8

  Engineered wood products

  • Requirements for engineered wood products.

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• IBC 2308.11.9

  Roof sheathing

  • Requirements for roof sheathing; see linked sections.

  Works withIBC 2304.8.2

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• IBC 2308.10.10

  Limitations of concrete or masonry veneer

  • Requirements for limitations of concrete or masonry veneer; see linked sections.

  Works withIBC Chapter 14

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• IBC 2308.11.10

  Joints

  • Requirements for joints.

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• IBC 2308.11.11

  Roof planking

  • Requirements for roof planking; see linked sections.

  Works withIBC Table 2308.11.11

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• IBC 2308.11.12

  Wood trusses

  • Requirements for wood trusses; see linked sections.

  Works withIBC 2303.4IBC 2308.10.7.2

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• IBC 2308.11.13

  Attic ventilation

  • Requirements for attic ventilation; see linked sections.

  Works withIBC 1202.2.1IBC 2309

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• IBC 2308.10.5.1

  Alternate braced wall (ABW)

  • Requirements for alternate braced wall (ABW); see linked sections.

  Works withIBC 2308.7.1IBC Table 2304.10.2

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• IBC 2308.10.5.2

  Portal frame with hold-downs (PFH)

  • Requirements for portal frame with hold-downs (PFH); see linked sections.

  Works withIBC 2308.7.1IBC Table 2304.10.2

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• IBC 2308.10.6.1

  Cripple wall bracing in Seismic Design Categories A, B and C

  • Requirements for cripple wall bracing in Seismic Design Categories A, B and C; see linked sections.

  Works withIBC Table 2308.10.1

  International Building Code, 2024 · Chapter 23, WoodRead the full text (opens UpCodes in a new tab)

• IBC 2308.10.6.2

  Cripple wall bracing in Seismic Design Categories D and E

  • SDC D–E cripple walls max 14 in, solid blocked.

  Works withIBC 2308.9.6

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• IBC 2308.10.7.1

  Bottom plate connection

  • Requirements for bottom plate connection; see linked sections.

  Works withIBC 2308.10.7.3IBC Table 2304.10.2

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• IBC 2308.10.7.2

  Top plate connection

  • Requirements for top plate connection; see linked sections.

  Works withIBC 2308.6IBC Table 2304.10.2

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• IBC 2308.10.7.3

  Sill anchorage

  • Requirements for sill anchorage; see linked sections.

  Works withIBC 2308.10.8IBC 2308.7

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• IBC 2308.10.7.4

  Anchorage to all-wood foundations

  • Requirements for anchorage to all-wood foundations; see linked sections.

  Works withIBC 2308.7

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• IBC 2308.10.8.1

  Foundation requirements

  • Requirements for foundation requirements; see linked sections.

  Works withIBC 2308.3

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• IBC 2308.10.8.2

  Floor and roof diaphragm support in Seismic Design Categories D and E

  • Requirements for floor and roof diaphragm support in Seismic Design Categories D and E; see linked sections.

  Works withIBC 2308.10.7

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• IBC 2308.10.8.3

  Stepped footings in Seismic Design Categories B, C, D and E

  • Requirements for stepped footings in Seismic Design Categories B, C, D and E; see linked sections.

  Works withIBC 2308.7

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• IBC 2308.11.3.1

  Ceiling joist and rafter connections

  • Ceiling joists or rafter ties (4 ft max spacing) tie rafters across the building with heel nailing per Table 2308.11.3.1; otherwise the ridge needs a beam.

  Works withIRC R802.5IRC R802.5.2IBC 2308.3IBC 2308.4IBC 2308.10.7.2IBC Table 2308.11.3.1

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• IBC 2308.11.5.1

  Openings in roof diaphragms in Seismic Design Categories B, C, D and E

  • Requirements for openings in roof diaphragms in Seismic Design Categories B, C, D and E.

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• IBC 2308.10.10.1

  Limitations of concrete or masonry veneer in Seismic Design Category B or C

  • Requirements for limitations of concrete or masonry veneer in Seismic Design Category B or C; see linked sections.

  Works withIBC 2308.10.1IBC 2306.3IBC Table 2308.10.1

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• IBC 2308.10.10.2

  Limitations of concrete or masonry in Seismic Design Categories D and E

  • Requirements for limitations of concrete or masonry in Seismic Design Categories D and E; see linked sections.

  Works withIBC 2308.10.1IBC 2306.3

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Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.