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• M2105.11.3

  Stab-Type Insert Fittings

  • Stab-type joints are clean and dry, with chamfered pipe pushed to full depth into ASTM F1924 fittings.

  International Residential Code, 2024 · Chapter 21, Hydronic PipingRead the full text (opens UpCodes in a new tab)

• G2415.3

  Prohibited Locations

  • Gas pipe may not run in ducts, chutes, chimneys, vents or shafts, or through another townhouse unit.

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

• M1601.5.3

  Furnace Connections

  • The furnace supply duct runs at least 6 in below the framing, with a noncombustible catch pan under floor openings, hung within 18 in, 3 in larger all round, with a 1 in lip.

  International Residential Code, 2024 · Chapter 16, Duct SystemsRead the full text (opens UpCodes in a new tab)

• M1601

  Duct Construction

  International Residential Code, 2024 · Chapter 16, Duct SystemsRead the full text (opens UpCodes in a new tab)

• M1801.11

  Multiple-Appliance Venting Systems

  • Appliances sharing a natural-draft vent are on the same floor (unless engineered per G2427), have staggered inlets, and natural-draft connectors never join positive-pressure mechanical draft.

  International Residential Code, 2024 · Chapter 18, Chimneys and VentsRead the full text (opens UpCodes in a new tab)

• G2438

  Clothes Dryers

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

• M2105

  Ground-Source Heat-Pump System Loop Piping

  International Residential Code, 2024 · Chapter 21, Hydronic PipingRead the full text (opens UpCodes in a new tab)

• M1504

  Exhaust Ducts and Exhaust Openings

  International Residential Code, 2024 · Chapter 15, Exhaust SystemsRead 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.