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• M1411.11

  Auxiliary Drain Pan

  • Category IV condensing appliances need an auxiliary pan where a blockage could cause damage, unless they shut down on blockage.

  International Residential Code, 2024 · Chapter 14, Heating and Cooling Equipment and AppliancesRead the full text (opens UpCodes in a new tab)

• R302.3.6.1

  Opening Protection

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

• IBC 1402.7

  Exterior wall veneers manufactured using combustible adhesives

  • Type I–IV walls over 40 ft with metal-core veneer laminated with combustible adhesive must pass NFPA 285.

  Works withIBC 703.3IBC 1402.8

  International Building Code, 2024 · Chapter 14, Exterior WallsRead the full text (opens UpCodes in a new tab)

• N1106

  Energy Rating Index Compliance Alternative

  International Residential Code, 2024 · Chapter 11, Energy EfficiencyRead the full text (opens UpCodes in a new tab)

• R405.2

  Wood Foundations

  • Wood basements sit on at least 4 in of drained gravel or sand under 6-mil poly; outside Group I soils, a sump at least 24 in across and 24 in deep drains it.

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

• R703.14.1.1.1

  Starter Strip

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

• R804.3.2.3

  Roof Rafter Splice

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

• G2439.3

  Exhaust Installation

  • Dryer ducts end outside with a backdraft damper and no screen, no flow-blocking screws, never into vents, ducts or plenums, sealed per M1601.4.1.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead 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.