Technical Changes by Subject

National Building Code

Protection against Radon Ingress (18 changes)

This document contains all the proposed changes related to radon to facilitate your review. Please use individual proposed change forms to submit your comments.

Division B Acceptable Solutions  (18 changes)

Part 5 Environmental Separation (2 changes)

• 5.4.1.1. Required Resistance to Air Leakage
  • A-5.4.1.1. Resistance to Air Leakage

Part 6 Heating, Ventilating and Air-conditioning (2 changes)

• 6.2.1.1. Good Engineering Practice
  • A-6.2.1.1. Building Pressurization

Part 9 Housing and Small Buildings (14 changes)

• 9.13.4. Soil Gas Control
  • A-9.13.4., 9.13.4.3., 9.13.4.5. and 9.13.4.7. Soil Gas Barriers
  • A-9.13.4. Exclusion of Soil Gas
• 9.13.4.1. Required Soil Gas Control
• A-9.13.4.2. Buildings Other than Dwelling Units
• 9.13.4.3. Soil Gas Control in Masonry Walls
  • A-9.13.4.3. Providing the Rough-in for a Subfloor Depressurization System
  • A-9.13.4.3.(1) to (3) Providing Performance Criteria for the Depressurization of the Space Between The Air Barrier And The Ground
  • A-9.13.4.3.(2) and (6)(a) Effective Depressurization
• 9.13.4.6. Providing for Subfloor Depressurization
  • A-9.13.4.6. Soil Gas Control by Depressurization
• 9.14.5.2. Sump Pits
• 9.16.2.1. Required Installation of Granular Material
• 9.18.6.2. Ground Cover in Heated Crawl Spaces
• 9.32.3.8. Protection Against Depressurization