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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).

12 sections matching “IBC 423” for San Antonio, TX, the 2024 IBC

  • IBC 423.1

    General

    • Covers storm shelters for tornadoes, hurricanes and windstorms; post-storm emergency shelters are Risk Category IV.

    Works withIBC 1604.5

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.2

    Construction

    • Storm shelters follow ICC 500 as hurricane, tornado or combined shelters; optional shelters must also meet ICC 500.

    Works withIBC 1604.5

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.4

    Critical emergency operations

    • In 250-mph tornado zones, 911 centers, EOCs and fire, police and ambulance stations are Risk Category IV with ICC 500 shelters.

    Works withIBC 1604.5

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.5

    Group E occupancies

    • In 250-mph tornado zones, schools with 50+ occupants need ICC 500 shelters (day care and religious-accessory excepted).

    Works withIBC 305.3

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.3.1

    Dedicated storm shelters

    • Dedicated shelters are A-3 (under 50 occupants per 303; residential ones take the R group served).

    Works withIBC 303

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.3.2

    Storm shelters within host buildings

    • Shelters inside host buildings follow the host occupancy unless ICC 500 says otherwise.

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.4.1

    Design occupant capacity

    • Shelter capacity covers office occupant loads and beds, with allowed reductions.

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.4.2

    Location

    • Shelters are inside or within 1,000 ft of travel from a building exterior door.

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead the full text (opens UpCodes in a new tab)

  • IBC 423.5.1

    Design occupant capacity

    • Capacity covers all classrooms, vocational rooms and offices on site, with allowed reductions.

    International Building Code, 2024 · Chapter 4, Special Detailed Requirements Based on Occupancy and UseRead 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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