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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 4,296 sections for San Antonio, TX, the 2024 IRC

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  • R602.10.4.1

    Mixing Methods

    • Methods can change from story to story and line to line; mixing on one line is allowed in SDC A-B (and detached C) if the line uses the most demanding method's length.

    International Residential Code, 2024 · Chapter 6, Wall ConstructionRead the full text (opens UpCodes in a new tab)

  • R301.2.2.10.1

    Seismic Restraint Resistance

    • Restraints resist a sideways force of one-third the operating weight; floor units strap in their top third and hung units brace 4 ways (flexible) or 2 ways (rigid).

    International Residential Code, 2024 · Chapter 3, Building PlanningRead the full text (opens UpCodes in a new tab)

  • M2002.4.1

    Requirements for Discharge Pipe

    • Relief discharge pipe: full size, gravity-drained, untrapped, one valve only, not tied to the drain, ending visibly within 6 in of the floor or receptor in the same room, unthreaded, with no valves or tees.

    International Residential Code, 2024 · Chapter 20, Boilers and Water HeatersRead the full text (opens UpCodes in a new tab)

  • M1503.3

    Exhaust Discharge

    • Kitchen exhaust ducts outdoors through a smooth, airtight, dedicated duct with a backdraft damper, never into an attic, crawl space or indoors; listed ductless hoods are allowed where other ventilation exists.

    International Residential Code, 2024 · Chapter 15, Exhaust SystemsRead 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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