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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).

6 sections matching “IBC 505.2” for San Antonio, TX, the 2024 IBC

  • IBC 505.2

    Mezzanines

    • A compliant mezzanine is part of the story below and doesn't add area or a story, but counts toward fire area; clear height above and below at least 7 ft.

    International Building Code, 2024 · Chapter 5, General Building Heights and AreasRead the full text (opens UpCodes in a new tab)

  • IBC 505.2.1

    Area limitation

    • Mezzanines may total one-third of the room's floor area (enclosed parts excluded); two-thirds for special industrial Type I/II, one-half for sprinklered Type I/II with voice alarm, and one-half in sprinklered dwelling units if open to the room.

    International Building Code, 2024 · Chapter 5, General Building Heights and AreasRead the full text (opens UpCodes in a new tab)

  • IBC 505.2.3

    Openness

    • A mezzanine must be open to the room except walls up to 42 in, columns and posts; enclosed parts allowed if occupant load is 10 or less, area is 10% or less, it has two exits, it's industrial control glazing, or in sprinklered non-H/I buildings up to two stories with two exits.

    International Building Code, 2024 · Chapter 5, General Building Heights and AreasRead the full text (opens UpCodes in a new tab)

  • IBC 505.2.1.1

    Aggregate area of mezzanines and equipment platforms

    • A mezzanine plus equipment platform in one room may total two-thirds of the room's area.

    International Building Code, 2024 · Chapter 5, General Building Heights and AreasRead 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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