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• M2005.1

  General

  • Water heaters follow Chapter 28 and the instructions; attic units meet M1305.1.2; listings are UL 174 electric, UL 732 oil, UL 2523 solid fuel, and solar per Chapter 23 and ICC 900/SRCC 300.

  International Residential Code, 2024 · Chapter 20, Boilers and Water HeatersRead the full text (opens UpCodes in a new tab)

• P2713.3

  Bathtub and Whirlpool Bathtub Valves

  • Tub and whirlpool fillers have an ASSE 1070 temperature limiter set to 120 F, accessible unless non-adjustable and integral.

  International Residential Code, 2024 · Chapter 27, Plumbing FixturesRead the full text (opens UpCodes in a new tab)

• R606.2.3

  AAC Masonry

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

• G2442.6

  Furnace Plenums and Air Ducts

  • When a furnace supplies other spaces, its return is ducted, sealed to the casing and ends outside the furnace room.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• N1113

  Change of Occupancy or Use

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

• P3007.3.2

  Sump

  • Sewage sumps are at least 18 in across and 24 in deep, accessible, solid-bottomed, with a gastight cover within 2 in of the floor, vented per Chapter 31.

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

• R603.1

  General

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

• R702.4.2

  Backer Boards

  International Residential Code, 2024 · Chapter 7, Wall CoveringRead 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.