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• R401.4

  Soil Tests

  • Where data point to expansive, compressible or shifting soil, the building official decides whether a soil test is required; in SDC C and up the report gives site class and SDS.

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

• R603.2.6

  Web Holes, Web Hole Reinforcing and Web Hole Patching

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

• R802.6.1

  Finished Ceiling Material

  • Factory-finished ceilings set before attachment get a compression strip over the top plate, at least half the plate width, if the finish can't take the load.

  International Residential Code, 2024 · Chapter 8, Roof-Ceiling ConstructionRead the full text (opens UpCodes in a new tab)

• R704.2.4

  Wood Structural Panel Exterior Soffit

  International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

• R902.1

  Roof Assemblies

  • A fire-rated (Class A, B or C) roof is required where local law says so or where the roof edge is within 3 ft of a lot line, tested to ASTM E108 or UL 790 and labelled.

  International Residential Code, 2024 · Chapter 9, Roof AssembliesRead the full text (opens UpCodes in a new tab)

• R302.2.3

  Continuity

  • Townhouse separation runs unbroken from foundation to roof deck, full length, including through attached accessory structures.

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

• R313

  Ceiling Height

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

• R608.9.1.1

  Anchor Bolts

  International Residential Code, 2024 · Chapter 6, Wall ConstructionRead 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.