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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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  • R301.2.1.2

    Protection of Openings

    • In windborne debris regions, exterior glazing needs large-missile impact protection; garage door glazing uses an approved impact standard or ANSI/DASMA 115.
    • Precut wood structural panels can serve as opening protection if they are at least 7/16 in thick and span 8 ft or less, with anchors installed permanently.
    • Max anchor spacing for debris-protection panels depends on anchor type and panel span; anchors embed at least 2 in.

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

  • R402.3.1

    Precast Concrete Foundation Materials

    • Precast foundation concrete reaches 5,000 psi at 28 days (5% air if it freezes), with Grade 40 or better rebar and at least 3/4 in of cover.

    International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

  • R1003.11.2

    Flue Linings for Specific Appliances

    • Liners for specific appliance types beyond R1003.11.1 follow R1003.11.3 to R1003.11.6.

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

  • R320.6

    Grip Size

    • Round handrails are 1-1/4 to 2 in across; other shapes have a 4 to 6-1/4 in perimeter and are no more than 2-1/4 in across.
    • Rails with a perimeter over 6-1/4 in need finger recesses on both sides near the top.

    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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