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• 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)

• P2603.3

  Protection Against Corrosion

  • Metal pipe (other than cast iron, ductile iron and galvanized) can't touch steel framing, concrete, masonry or corrosive soil; plastic sleeving is at least 8 mil and lets the pipe move.

  International Residential Code, 2024 · Chapter 26, General Plumbing RequirementsRead the full text (opens UpCodes in a new tab)

• G2427.6.9.2

  Vent Offsets

  • Type B and L vents sized by draft hood area run mostly vertical with offsets under 45 degrees (one 60 allowed), and horizontal runs no more than 75 percent of height.

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

• R304.4

  Plastic Composites

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

• P3002

  Materials

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

• P2904.6.2.1

  Available Pressure Equation

  • Available pressure equals supply pressure minus service, meter, device and elevation losses and the head's required pressure.

  International Residential Code, 2024 · Chapter 29, Water Supply and DistributionRead the full text (opens UpCodes in a new tab)

• R905.10.4

  Attachment

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

• R802.7.1

  Sawn Lumber

  International Residential Code, 2024 · Chapter 8, Roof-Ceiling 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.