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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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  • R608.9

    Requirements for Connections—General

    • Concrete walls connect to floors and roofs using the prescriptive details where the tables allow, proprietary connectors, or a design; wood framing must have specific gravity 0.42 or more.

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

  • R804.3.2.4

    Roof Rafter to Ceiling Joist and Ridge Member Connection

    • Steel rafters tie to parallel ceiling joists across the building and to a C-plus-track ridge member with 2x2 clip angles and 2 to 7 No. 10 screws per leg by width and snow.

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

  • R505.3.8

    Framing of Floor Openings

    • Steel floor openings get header and trimmer joists, with headers spanning 6 or 8 ft per the figures, joined by four 2x2 clip angles with four No. 8 screws per leg.

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

  • R302.10.1

    Insulation

    • Insulation, facings included, has a flame spread index of 25 or less and a smoke index of 450 or less.
    • Non-sprayed cellulose loose fill only needs the 450 smoke limit, tested to CAN/ULC S102.2.

    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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