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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 22 sections for San Antonio, TX, the 2024 IBC

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  • IBC 2902.1

    Minimum number of fixtures

    • Minimum plumbing fixtures per Table 2902.1 by use, e.g. business WC 1 per 25 for the first 50 then 1 per 50; restaurants 1 per 75; mercantile 1 per 500; educational 1 per 50; apartments 1 per unit plus a washer hookup per 20 units.

    Works withIBC 2902.1.1IBC 2902.2IBC 609IBC Table 2902.1

    International Building Code, 2024 · Chapter 29, Plumbing SystemsRead the full text (opens UpCodes in a new tab)

  • IBC 2903.1.1

    Water closets, urinals, lavatories and bidets

    • Toilets, urinals, lavatories and bidets 15 in from center to side walls, 30 in center to center, 21 in clear in front; WC compartments 30×60 in (30×56 wall-hung).

    Works withIRC P2705.1

    International Building Code, 2024 · Chapter 29, Plumbing 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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