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• IBC 602.4.2.1

  Exterior protection

  • Outside faces of mass timber exterior walls need at least 40 minutes of noncombustible protection.

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead the full text (opens UpCodes in a new tab)

• IBC 602.4

  Type IV

  • Type IV uses mass timber or noncombustible elements meeting Table 601 via 703.2; IV-A, IV-B and IV-C need noncombustible protection per 703.6 and 722.7; CLT labeled to ANSI/APA PRG 320. Above 12 stories or 180 ft, exit and hoistway enclosures are noncombustible.

  Works withIBC 703.2IBC 703.6IBC 722.7IBC 2304.11IBC 2303.1.4

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead the full text (opens UpCodes in a new tab)

• R302.2

  Townhouses

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

• R903.4.1

  Secondary (Emergency Overflow) Drains or Scuppers

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

• IBC 2103.2.3.1

  Dry-set Portland cement mortars

  • Requirements for dry-set Portland cement mortars.

  International Building Code, 2024 · Chapter 21, MasonryRead the full text (opens UpCodes in a new tab)

• R704.2.2

  Fiber-Cement Exterior Soffit Panels

  International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

• IBC 2304.11

  Heavy timber construction

  • Heavy timber minimum sizes per Table 2304.11: floor-supporting columns 8×8 sawn (6¾×8¼ glulam); floor beams 6×10; roof-only columns 6×8; roof framing 4×6 (3 in with sprinklers).

  Works withIBC 602.4IBC 2304.11.1IBC 2304.11.4IBC 2304.11.2IBC 2304.9IBC Table 2304.11

  International Building Code, 2024 · Chapter 23, WoodRead the full text (opens UpCodes in a new tab)

• R603

  Cold-Formed Steel Wall Framing

  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.