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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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  • R329.8

    Ground-Mounted Photovoltaic (PV) Panel Systems

    • Ground-mounted PV is designed per R301; separation distances are set locally.

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

  • R602.10.8

    Braced Wall Panel Connections

    • Braced panels tie into the floor through a rim, band or blocking under the full panel length, or full-depth blocking at 16 in where joists run parallel.

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

  • R303.5.9

    Interior Trim

    • Exposed foam trim is allowed if it's dense, thin and narrow, covers 10% or less of the room surfaces, and has a flame spread of 75 or less.

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

  • R301.2.1

    Wind Design Criteria

    • Wind design uses the mapped ultimate wind speed, but never less than the lowest speed the prescriptive tables cover.
    • Component and cladding design pressures are never taken below 10 psf, positive or negative.
    • A member's effective wind area is span times a width of at least a third of the span; for a fastener, no more than its tributary area.
    • The edge and corner pressure zones are 4 ft wide on every building, and an overhang adds its roof zone and adjacent wall zone pressures together.
    • Multiply the base cladding pressures by this factor for mean roof height and exposure.

    International Residential Code, 2024 · Chapter 3, Building PlanningRead 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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