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• R801.3

  Roof Drainage

  • On expansive or collapsible soils, homes need gutters or another controlled roof drain that discharges at least 5 ft from the foundation or into an approved system.

  Local review: San Antonio's expansive clays make this apply to most homes: plan gutters and downspouts that discharge 5 ft or more from the foundation.

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

• R609.6.1

  Fenestration Testing and Labeling

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

• R502.5

  Allowable Girder and Header Spans

  • Lumber girder and header spans follow Tables R602.7(1) to R602.7(3).

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

• R307.1

  General

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

• R507.5.1

  Deck Beam Bearing

  • Deck beam plies are continuous between bearings, cantilever no more than a quarter of the span, and bear 1-1/2 in on wood or 3 in on concrete.

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

• R301.2

  Climatic and Geographic Design Criteria

  • The local jurisdiction publishes the climate and site design values every house is built to.

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

• R610.5.3

  Panel-to-Panel Connection

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

• R905.5.3

  Underlayment

  International Residential Code, 2024 · Chapter 9, Roof AssembliesRead 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.