IPC 2021 · Model

Chapter 9: Vents

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

901.1 Scope The provisions of this chapter shall govern the materials, design, construction and installation of vent systems.

  1. 901.1Scope
  2. 901.2Trap seal protection
  3. 901.2.1Venting required
  4. 901.3Chemical waste vent systems
  5. 901.4Use limitations
  6. 901.5Tests
  7. 902.1Vents
  8. 902.2Sheet copper
  9. 902.3Sheet lead
  10. 903.1Vent terminal required
  11. 903.1.1Roof extension unprotected
  12. 903.1.2Roof used for recreational or assembly purposes
  13. 903.2Frost closure
  14. 903.3Flashings
  15. 903.4Prohibited use
  16. 903.5Location of vent terminal
  17. 904.1Required vent extension
  18. 904.1.1Installation
  19. 904.2Vent stack required
  20. 904.3Vent termination
  21. 904.4Vent connection at base
  22. 905.1Connection
  23. 905.2Grade
  24. 906.1Size of stack vents and vent stacks
  25. 906.2Vents other than stack vents or vent stacks
  26. 907.1Vent for horizontal offset of drainage stack
  27. 907.2Upper section
  28. 908.1Where required
  29. 908.2Size and connection
  30. 909.1Distance of trap from vent
  31. 909.2Venting of fixture drains
  32. 910.1Individual vent permitted
  33. 911.1Individual vent as common vent
  34. 911.2Connection at the same level
  35. 912.1Horizontal wet vent permitted
  36. 912.1.1Vertical wet vent permitted
  37. 913.1Waste stack vent permitted
  38. 913.2Stack installation
  39. 914.1Circuit vent permitted
  40. 914.2Vent connection
  41. 915.1Type of fixtures
  42. 915.2Installation
  43. 916.1Limitation
  44. 916.2Vent connection
  45. 916.3Vent installation below the fixture flood level rim
  46. 917.1Single-stack vent system permitted
  47. 918.1General

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 →

IPC 2021 Chapter 9: Vents — Model Code | BuildSpec