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• IBC 1805.4.1

  Floor base course

  • Basement floors sit on 4 in of gravel or crushed stone (≤10% passing No. 4), except in well-drained gravelly soil.

  Works withIBC 1805.1.1

  International Building Code, 2024 · Chapter 18, Soils and FoundationsRead the full text (opens UpCodes in a new tab)

• N1102.5.1.2

  Air Leakage Testing

  • Every building or dwelling unit is blower-door tested at 50 Pa (RESNET 380, ASTM E779, E1827 or E3158) after all penetrations are sealed, with a signed report; heated private garages may be visually verified instead.

  International Residential Code, 2024 · Chapter 11, Energy EfficiencyRead 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)

• R1001.7.1

  Damper

  • Masonry fireplaces have a ferrous metal damper at least 8 in above the opening, in the fireplace or its chimney, operable from the room.

  International Residential Code, 2024 · Chapter 10, Chimneys and FireplacesRead the full text (opens UpCodes in a new tab)

• R606.6.4.2.2

  Floor Diaphragms

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

• M2103

  Floor Heating Systems

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

• M1305.1.1

  Appliances in Rooms

  • Appliances in closets, alcoves or basements are reached through a door and a passage at least 24 in wide that fits the largest unit, with a level space 30 in deep and appliance height (30 in min) in front.

  International Residential Code, 2024 · Chapter 13, General Mechanical System RequirementsRead the full text (opens UpCodes in a new tab)

• R329.7.1

  PV Panels Installed Over Open-Grid Framing or Noncombustible Deck

  International Residential Code, 2024 · Chapter 3, Building PlanningRead 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.