IRC 2021 · Model

Chapter 16: Structural Design

10 sections in this chapter of the IRC 2021 model text — not Model's amended edition.

1601.4 Installation Duct installation shall comply with Sections M1601.4.1 through M1601.4.10.

  1. 1601.4Installation
  2. M1601.1.1Above-ground duct systems
  3. M1601.1.2Underground duct systems
  4. M1601.2Vibration isolators
  5. M1601.3Duct insulation materials
  6. M1601.4.1Joints, seams and connections
  7. M1601.5Under-floor plenums
  8. M1601.6Independent garage HVAC systems
  9. M1602.1Outdoor air openings
  10. M1602.2Return air openings

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IRC 2021 Chapter 16: Structural Design — Model Code | BuildSpec