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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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  • R804.3.2.2

    Roof Rafter Support Brace

    • A rafter support brace is a 350S162-33 or larger, 8 ft or shorter, at 45 degrees or steeper, with four No. 10 screws each end, within 6 in of the bearing wall, and mid-braced if over 4 ft.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R703.8.2.1

    Support by Steel Angle

    • Veneer on a steel angle uses at least a 6x4x5/16 in angle lagged to double studs at 16 in, with two-thirds of the brick bearing, up to 12 ft 8 in of veneer; slopes over 7:12 need stops.

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

  • R401.1

    Application

    • This chapter governs foundations and foundation spaces; flood-zone foundations also follow R306, and wood foundations follow AWC PWF.
    • Prescriptive wood foundations are limited to two floors and a roof, with interior walls at most 50 ft apart; in SDC D they must be engineered.

    International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

  • R1003.4.1

    Anchorage

    • Two 3/16 x 1 in straps embed 12 in into the chimney, hook the outer bars with a 6 in tail, and each fasten to at least four joists with two 1/2-in bolts.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead 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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