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• R903.1

  General

  • Roof decks get approved coverings secured per this chapter and the maker's instructions so the roof protects the building.

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

• R305.3

  Barriers

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

• R1003.2

  Footings and Foundations

  • Chimney footings are concrete or solid masonry at least 12 in thick, extending 6 in beyond the wall on all sides, below frost depth on undisturbed soil or engineered fill, and at least 12 in below grade where there is no frost.

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

• R1006.2

  Exterior Air Intake

  • The air intake draws from outdoors or a naturally vented crawl or attic, not from the garage or basement, sits no higher than the firebox (unless listed), and has a 1/4 in corrosion-resistant screen.

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

• R607.9

  Reinforcement

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

• R804.3.4

  Headers

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

• R507.2.2.3

  Decay Resistance

  International Residential Code, 2024 · Chapter 5, FloorsRead the full text (opens UpCodes in a new tab)

• R603.9

  Structural Sheathing

  • Steel walls are sheathed on every exterior surface with 7/16 in OSB or 15/32 in plywood, and full-height panels at least 48 in wide make up a set share of each wall, never under 20%.

  International Residential Code, 2024 · Chapter 6, Wall 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.