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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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  • R505.3.1

    Floor-to-Foundation or Load-Bearing Wall Connections

    • Steel floors are anchored to foundations, sills or walls per Table R505.3.1(1), with bolts within 12 in of corners and track ends; tighter spacing applies in Exposure C.
    • Steel joists get two No. 8 screws at each bearing track, and subfloor screws go 6 in apart at edges and 12 in in the field.

    International Residential Code, 2024 · Chapter 5, FloorsRead the full text (opens UpCodes in a new tab)

  • R704.2

    Exterior Soffit Installation Where the Design Wind Pressure Is 30 psf or Less

    • Up to 30 psf: vinyl or aluminum soffit fastened both ends with intermediate strips over 16 in; fiber-cement 1/4 in; hardboard 7/16 in and plywood 3/8 in nailed 6 in edge, 12 in field.

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

  • R406.4

    Precast Concrete Foundation System Dampproofing

    • Precast walls are dampproofed like site-cast walls, with joints sealed full height to ASTM C920.

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

  • R903.4

    Roof Drainage

    • Roofs that don't drain off their edges need a drain at every low point, plus overflow drains (2 in above the low point) or scuppers three times the drain size and 4 in tall where parapets could trap water.

    International Residential Code, 2024 · Chapter 9, Roof AssembliesRead 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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