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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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  • R603.6

    Headers

    • Every exterior and bearing opening gets a box-beam or back-to-back steel header sized from the tables, or one per AISI S230/S240.

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

  • R301.1.4

    Intermodal Shipping Containers

    • A shipping container reused as a building is designed to the IBC's container provisions.

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

  • R302.6

    Dwelling Unit Garage Fire Separation

    • Garage separation: 1/2 in gypsum on the garage side, 5/8 in Type X under living space above, and 1/2 in on supporting structure.
    • A detached garage within 3 ft of the house gets 1/2 in gypsum inside its exterior walls in that zone.

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

  • R403.5

    Crushed Stone Footings for Cast-in-Place Concrete Foundations

    • Crushed stone footings may support non-retaining cast-in-place walls for houses in SDC A to C and townhouses in A or B.
    • Under 140 mph, stem walls on crushed stone are at least 6 x 12 in with two No. 4s in Exposure B (bracing lines 28 ft max), or 8 x 18 in with three No. 4s in C and D (25 ft).

    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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