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• M2001.1.1

  Standards

  • Boilers are listed to UL 726 (oil), UL 834 (electric) or UL 2523 (solid fuel), built to ASME Section I or IV, with ASME CSD-1 controls up to 12.5 million Btu/h; gas per Chapter 24.

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

• R313

  Ceiling Height

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

• R905.2.3

  Underlayment

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

• R310.2.2

  Alterations, Repairs and Additions

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

• R404.5.1

  Design

  International Residential Code, 2024 · Chapter 4, FoundationsRead the full text (opens UpCodes in a new tab)

• IBC 909.21.4

  Fan system

  • Per 909.21.4.1 to 909.21.4.4.

  International Building Code, 2024 · Chapter 9, Fire Protection and Life Safety SystemsRead the full text (opens UpCodes in a new tab)

• IBC 722.5.1.1

  General

  • W is weight per foot, D the heated perimeter.

  International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

• M2301.2

  Design and Installation

  • Solar thermal design and installation meets M2301.2.1 through M2301.2.13.

  International Residential Code, 2024 · Chapter 23, Solar Thermal Energy 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.