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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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  • R1001.3

    Seismic Reinforcing

    • In Seismic Design Category D0 to D2, masonry or concrete chimneys are reinforced per Table R1001.1 and Section R606.

    Local review: San Antonio sites are normally Seismic Design Category A or B, so chimney reinforcing and anchorage are usually not required; confirm the SDC for the site in Table R301.2.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead the full text (opens UpCodes in a new tab)

  • R1003.6

    Changes in Dimension

    • Chimney walls and flue liners keep the same size and shape within 6 in above and below any floor, ceiling or roof they pass through.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead the full text (opens UpCodes in a new tab)

  • R301.2.2.8

    Cold-Formed Steel Framing in Seismic Design Categories D

    • In SDC D0 to D2, cold-formed steel framing also meets AISI S230.

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

  • R403.1.4.1

    Frost Protection

    • Foundations are protected from frost by going below the local frost line, a frost-protected shallow foundation, ASCE 32, or bearing on rock; never on seasonally frozen soil.
    • Frost protection isn't needed for detached light-frame sheds up to 600 sq ft, or other sheds up to 400 sq ft, with eaves of 10 ft or less.

    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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