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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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  • R330.8.1

    Garages

    • Batteries in a garage's driving path need impact protection: the door-wide zone up to 48 in high, plus 36 in either side on the back wall and the side walls near it.

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

  • R602.12

    Simplified Wall Bracing

    • Simple wall bracing works for up to three stories on concrete or masonry, walls 10 ft or less, roofs 15 ft eave-to-ridge, 130 mph or less in B or C, SDC A-C (A-B townhouses), with 1/2 in interior gypsum.

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

  • R602.10.10

    Cripple Wall Bracing

    • Cripple walls are braced like the wall above, with 15% more length; in SDC D0/D1 and SDC C townhouses only panel methods, with panels no more than 14 ft apart.
    • Cripple walls 48 in or shorter can count as the first story; if any part is taller, the cripple wall is an extra story.

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

  • R602.6

    Drilling and Notching of Studs

    • Notches are at most 25% of stud depth in exterior or bearing walls and 40% in partitions; holes are at most 60% of depth, 5/8 in from the edge, and not where there's a notch.
    • Holes over 40% in exterior or bearing studs need doubled studs, and no more than two doubled studs in a row may be bored that way.

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead 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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