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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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  • 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)

  • R610.4

    SIP Wall Panels

    • SIP thickness (4.5 or 6.5 in, or design required) comes from the tables by width, wind, snow and wall height; panels carry a grade mark.

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

  • R703.8.3.1

    Allowable Span

    • Steel angle lintels span 3 to 20 ft depending on angle size and stories above; reinforced masonry lintels use 1 to 4 bars.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R1001.4

    Seismic Anchorage

    • In SDC D0 to D2, chimneys are anchored at every floor, ceiling or roof line more than 6 ft above grade, unless the chimney is fully inside the exterior walls.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead 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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