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• P2909.2

  Reverse Osmosis Drinking Water Treatment Units

  • Residential RO units meet NSF 58 or CSA B483.1 and drain through an air gap.

  International Residential Code, 2024 · Chapter 29, Water Supply and DistributionRead the full text (opens UpCodes in a new tab)

• R602.6

  Drilling and Notching of Studs

  • Notches are at most 25% of stud depth in exterior or bearing walls and 40% in partitions; holes are at most 60% of depth, 5/8 in from the edge, and not where there's a notch.
  • Holes over 40% in exterior or bearing studs need doubled studs, and no more than two doubled studs in a row may be bored that way.

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

• R703.8.6

  Weepholes

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

• G2417.3

  Test Preparation

  • Joints stay exposed during the test, except previously tested concealed end joints.

  International Residential Code, 2024 · Chapter 24, Fuel GasRead the full text (opens UpCodes in a new tab)

• R603.9.4.1

  Ultimate Design Wind Speeds Greater Than 130 mph

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

• M2301.7

  Solar Thermal Systems for Heating Potable Water

  • Solar systems heating potable water follow M2301.7.1, M2301.7.2 and P2902.5.5.

  International Residential Code, 2024 · Chapter 23, Solar Thermal Energy SystemsRead the full text (opens UpCodes in a new tab)

• R610.3.2

  SIP Screws

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

• R505.1

  Cold-Formed Steel Floor Framing

  International Residential Code, 2024 · Chapter 5, FloorsRead 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.