The OAA provides licensed members with free viewing access to a collection of CSA standards, including all standards referenced in the National Building Code of Canada (NBC), Ontario’s Building Code (OBC), as well as other pertinent standards.
The following are the Top 10 accessed documents from the OAA’s NBC/OBC Standards Collection in 2025, by CSA Standards Access Program users:
1. CSA/ASC B651:23, Accessible Design for the Built Environment.
2. ASME A17.1-2022/CSA B44:22, Safety Code for Elevators and Escalators.
3. CSA A23.1:24/CSA A23.2:24, Concrete Materials and Methods of Concrete Construction / Test Methods and Standard Practices for Concrete.
4. CSA Z317.2:24, Special Requirements for Heating, Ventilation, and Air-Conditioning (HVAC) Systems in Health Care Facilities.
5. CSA B149.1:25, Natural Gas and Propane Installation Code.
6. CSA B355:24, Platform Lifts and Stair Lifts for Barrier-free Access.
7. CSA S304:24, Design of Masonry Structures.
8. CSA A460:19 (R2024), Bird-friendly Building Design.
9. CSA A371:14 (R2024), Masonry Construction for Buildings.
10. CSA Z240 MH SERIES:16 (R2025), Manufactured Homes.
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