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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).

7 sections matching “R802.5” for San Antonio, TX, the 2024 IRC

  • R802.5

    Ceiling Joists

    • Ceiling joists run continuous or are joined over partitions, are nailed to the plates, and are sized from the ceiling joist span tables (10 psf no storage or 20 psf limited storage).

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R802.5.2

    Ceiling Joist and Rafter Connections

    • Ceiling joists in the bottom third of the rafter height are nailed to the rafters per the heel joint table; higher joists, or joists running the other way without rafter ties, require a beam ridge.
    • Heel nailing rises as ties move up: x1.11 at 1/10 of the rise or less, up to x1.5 at one-third; above a third, the connection is designed.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R802.5.2.1

    Ceiling Joists Lapped

    • Ceiling joists lap at least 3 in or butt over a bearing wall; where they form the tie, laps are nailed per the heel table and butts get equal ties.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R802.5.2.2

    Rafter Ties

    • Rafter ties are at least 2x4, nailed per the heel table, spaced 24 in or less; blocking is at least utility grade.

    International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

  • R502.3.1

    Sleeping Areas and Attic Joists

    • Use the 30 psf table for bedrooms and attics reached by a fixed stair (dead load up to 20 psf); ceiling joists under storage attics follow R802.5.

    International Residential Code, 2024 · Chapter 5, FloorsRead 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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