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Search the building code.

Every 2024 IRC section and the IBC as it loads, by number or topic, plus the local rules for your city. Free to search.

Detached houses, duplexes and townhouses up to 3 stories with their own exits use the IRC; every other building uses the IBC (IBC 101.2).

A random sample from 1,598 sections for San Antonio, TX, the 2024 IRC

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  • R704.2

    Exterior Soffit Installation Where the Design Wind Pressure Is 30 psf or Less

    • Up to 30 psf: vinyl or aluminum soffit fastened both ends with intermediate strips over 16 in; fiber-cement 1/4 in; hardboard 7/16 in and plywood 3/8 in nailed 6 in edge, 12 in field.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R602.10.4

    Construction Methods for Braced Wall Panels

    • Bracing methods range from let-in braces and diagonal boards to panels, gypsum, plaster, hardboard and portal frames; panel bracing is at least 3/8 in, nailed 6 in edge and 12 in field.

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead the full text (opens UpCodes in a new tab)

  • R703.5

    Wood, Hardboard and Wood Structural Panel Siding

    • Vertical wood siding nails to blocking at 24 in; 3/8 in panel siding needs studs at 16 in (long side vertical), and 7/16 in or thinner at 24 in or less.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R603.8

    Head and Sill Track

    • Head and sill track spans follow Table R603.8; short openings with both tracks may multiply them by 1.75 (under 4 ft) or 1.5 (6 ft or less).

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead the full text (opens UpCodes in a new tab)

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.

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