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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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  • R804.3.3

    Cutting and Notching

    • Never cut or notch steel roof member flanges or lips; headers follow the steel wall header tables.

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

  • R505.2

    Structural Framing

    • Steel floor members are structural sheet steel with a metallic coating, sized and graded per AISI S230 and S240, and labelled.

    International Residential Code, 2024 · Chapter 5, FloorsRead the full text (opens UpCodes in a new tab)

  • R302.4.2

    Membrane Penetrations

    • Steel outlet boxes up to 16 sq in may pierce a rated wall's membrane if they total no more than 100 sq in per 100 sq ft, gaps are 1/8 in or less, and opposite boxes are 24 in apart or otherwise protected.

    International Residential Code, 2024 · Chapter 3, Building PlanningRead the full text (opens UpCodes in a new tab)

  • R403.1.6

    Foundation Anchorage

    • Sill plates and exterior sole plates on slabs are anchored with 1/2 in bolts at 6 ft or less, embedded 7 in, in the middle third of the plate, with a nut and washer.
    • Each plate piece gets at least two bolts, with one within 12 in of each end but no closer than seven bolt diameters.
    • Short offset walls between braced panels need one bolt if 24 in or shorter, and none if 12 in or shorter, when tied to the panels at the corners.

    International Residential Code, 2024 · Chapter 4, FoundationsRead 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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