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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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  • R301.5

    Live Load

    • Design floors and parts for at least these uniform and point live loads.
    • Garage floors take 2,000 lb on a 4.5 in square and stair treads take 300 lb on a 2 in square, if worse than the uniform load.
    • An attic counts as limited storage when there is 42 in of clear height or truss webs leave a 42 x 24 in space; the 20 psf only applies where the access, slope and insulation conditions are all met, the rest takes 10 psf.
    • Glass in guards and handrails is designed for four times the rail and infill loads; infill takes 50 lb on one square foot.

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

  • R905.11

    Modified Bitumen Roofing

    • Modified bitumen, single-ply, spray foam and liquid-applied roofs all slope at least 1/4:12, meet their material standards and are wind-tested.

    International Residential Code, 2024 · Chapter 9, Roof AssembliesRead the full text (opens UpCodes in a new tab)

  • R402.1.2

    Wood Treatment

    • Wood foundation lumber and plywood is treated and kiln-dried per AWPA U1 and labelled; cuts are soaked with copper naphthenate of at least 2% copper.

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

  • 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)

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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