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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 729 sections for San Antonio, TX, the 2024 IRC

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  • P3003.2

    Prohibited Joints

    • No running threads, bands, drilling, tapping, burning or welding of DWV; no cement, mastic, unapproved fittings, rolling O-rings between sizes, solvent welds between different plastics, or saddle fittings.

    International Residential Code, 2024 · Chapter 30, Sanitary DrainageRead the full text (opens UpCodes in a new tab)

  • P3302.1

    Subsoil Drains

    • Subsoil (foundation) drains are perforated or open-joint pipe at least 4 in, with a backwater valve where backwater is possible, discharging to a trapped drain, sump, dry well or daylight; subsoil sumps need no gastight cover or vent.

    International Residential Code, 2024 · Chapter 33, Storm DrainageRead the full text (opens UpCodes in a new tab)

  • P2606.1

    Sealing of Annular Spaces

    • Gaps around pipes through sleeves or envelope walls, floors and ceilings are sealed with compatible caulk, foam or gaskets; rated assemblies follow the building code.

    International Residential Code, 2024 · Chapter 26, General Plumbing RequirementsRead the full text (opens UpCodes in a new tab)

  • P3005.1.1

    Horizontal to Vertical (Multiple Connection Fittings)

    • Double fittings at one level need equal-size opposing inlets from similar fixtures; double sanitary tees can't take back-to-back toilets or pumped discharge unless the toilets are 18 in from the tee.

    International Residential Code, 2024 · Chapter 30, Sanitary DrainageRead 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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