IRC 2021 · Model

Chapter 31: Means Of Egress

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

3101.4 Extension outside a structure In climates where the 97.5-percent value for outside design temperature is 0°F (-18°C) or less (ASHRAE 97.5-percent column, winter, see Chapter 3), vent pipes installed on the exterior of the structure shall be protected against freezing by insulation, heat or both. Vent terminals shall be protected from frost closure in accordance with Section P3103.2.

Plain-English guides for this chapter
  1. 3101.4Extension outside a structure
  2. 3101.5Flood resistance
  3. 3103.1.1Roof extension
  4. P3101.1General
  5. P3101.2Trap seal protection
  6. P3101.3Use limitations
  7. P3102.1Required vent extension
  8. P3103.1Vent pipes terminating outdoors
  9. P3104.1Connection
  10. P3104.4Vertical rise of vent
  11. P3105.1Distance of trap from vent
  12. P3105.3Crown vent prohibited
  13. P3106.1Individual vent permitted
  14. P3107.1Individual vent as common vent
  15. P3108.1Horizontal wet vent permitted
  16. P3108.2Dry vent connection
  17. P3109.1Waste stack vent permitted
  18. P3110.1Circuit vent permitted
  19. P3111.1Type of fixtures
  20. P3112.1Limitation
  21. P3114.1General

The full text is for BuildSpec members

Read the complete section, search across every adopted code, run the calculators and ask Copilot — free for 14 days, no card required.

  • Full text of every section in this chapter
  • Plain-English summaries and cross-references
  • Compare this chapter across jurisdictions
  • Ask Code AI about any section, with citations
Start your free 14-day trialSign in →

Our previews are real data — live counts, no placeholders. We publish our error log →

IRC 2021 Chapter 31: Means Of Egress — Model Code | BuildSpec