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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 1,598 sections for San Antonio, TX, the 2024 IRC

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  • R404.1.3.3.7.8

    Construction Joint Reinforcement

    • Construction joints in plain walls sit at lateral supports with No. 4 bars across them at 24 in or less, embedded 12 in each side; in reinforced walls, in the middle third of the span.

    International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

  • R1002.4

    Seismic Reinforcing

    • In SDC D0 to D2 a masonry heater is anchored to its foundation; its body needs no reinforcing if no taller than 3.5 times its width and not carrying the chimney, but a chimney sharing a wall with it is reinforced.

    International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead the full text (opens UpCodes in a new tab)

  • R405.1

    Concrete or Masonry Foundations

    • Basements and other below-grade living or usable spaces with concrete or masonry walls get a footing drain, unless the soil is Group I.
    • Gravel drains reach 1 ft past the footing and 6 in above it under filter fabric; pipe sits on 2 in of gravel and is covered by 6 in.

    International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

  • R404.2.3

    Height of Backfill

    • Wood foundations not built to AWC PWF hold back no more than 4 ft; over 12 in of fill, plywood grade and thickness follow Table R404.2.3.

    International Residential Code, 2024 · Chapter 4, FoundationsRead 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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