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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).

26 sections matching “IBC 420” for San Antonio, TX, the 2024 IRC

  • IBC 420.3

    Horizontal separation

    • Floors between dwelling or sleeping units, and between units and other occupancies, are horizontal assemblies.

    Works withIBC 711

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

  • IBC 420.6

    Smoke barriers in Group I-1, Condition 2

    • I-1 Condition 2 stories split into smoke compartments up to 22,500 sq ft with 200 ft travel to a smoke door.

    Works withIBC 709

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

  • IBC 420.7

    Group I-1 assisted living housing units

    • Shared living spaces may open to rated corridors with detection or quick-response sprinklers.

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

  • IBC 420.9

    Domestic cooking appliances

    • I-1 domestic cooking: limited appliances, hood, cooktop suppression, staff shutoff, 120-minute timer, extinguisher within 30 ft; individual units excepted.

    Works withIBC 904.15IBC 906

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

  • IBC 420.10

    Group R cooking facilities

    • Group R domestic cooking follows IMC 917.2.

    Works withIMC

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

  • IBC 420.11

    Group R-2 dormitory cooking facilities

    • Dorm cooking follows 420.11.1 and 420.11.2.

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

  • IBC 420.11.1

    Cooking appliances

    • Dorm appliances limited and in approved locations; cooktops need suppression and hoods.

    Works withIBC 904.15

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

  • IBC 420.11.2

    Cooking appliances in sleeping rooms

    • No cooktops, ranges or ovens in dorm sleeping rooms.

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

  • IBC 403.3.1.1

    Buildings 420 feet or less in height

    • One standpipe or express riser per vertical zone.

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

  • IBC 403.3.1.2

    Buildings more than 420 feet in height

    • At least two risers per zone, feeding alternate floors.

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

  • IBC 202

    Combustible dust

    • Solid particles 420 microns or smaller (passing a No. 40 sieve) that can ignite when dispersed in air.

    Works withIFC

    International Building Code, 2024 · Chapter 2, DefinitionsRead the full text (opens UpCodes in a new tab)

  • IBC 308.2

    Institutional Group I-1

    • I-1: more than 16 residents (not counting staff) living 24 hours in a supervised setting with custodial care, such as assisted living and group homes; Condition 1 or 2 and Section 420.

    Works withIBC 420

    International Building Code, 2024 · Chapter 3, Occupancy Classification and UseRead the full text (opens UpCodes in a new tab)

  • IBC 310.1

    Residential Group R

    • Group R: sleeping use not classed as Group I or built under the IRC; Group R not built under the IRC per 310.4.1 and 310.4.2 follows Section 420.

    Works withIBC 420IRC

    International Building Code, 2024 · Chapter 3, Occupancy Classification and UseRead the full text (opens UpCodes in a new tab)

  • IBC 403.2.2

    Structural integrity of interior exit stairways and elevator hoistway enclosures

    • Risk Category III/IV high-rises and buildings over 420 ft need impact-resistant stair and hoistway enclosures.

    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 403.2.3

    Sprayed fire-resistive materials (SFRM)

    • SFRM bond strength: 430 psf up to 420 ft, 1,000 psf above.

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

  • IBC 403.3.2

    Water supply to required fire pumps

    • Over 420 ft (or IV-A/IV-B over 120 ft), fire pumps connect to two mains in different streets.

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

  • IBC 508.2.4

    Separation of occupancies

    • No separation is needed between accessory and main occupancies, except H-2 to H-5 (508.4) and dwelling/sleeping units (420).

    Works withIBC 508.4IBC 420

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

  • IBC 403.2.1.1

    Type of construction

    • Up to 420 ft, Type IA may drop to IB ratings (not floor-supporting columns); IB may drop to IIA except in F-1, H-2, H-3, H-5, M and S-1; height and area stay the same.

    Works withIBC 601

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

  • IBC 403.2.1.2

    Shaft enclosures

    • Up to 420 ft, non-exit, non-hoistway shafts may be 1-hour if sprinklered at top and alternate floors.

    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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