Upcoming Events

Nov 19 2020 Online Learning /

OAA Webinar | The Intent of OBC 5.10.4 Other Fenestration Assemblies

11:00 AM - 12:30 PM

OAA Architect, LTOAA $39 + HST, OAA Interns $29 + HST, Non-Members: $59 + HST

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Webinar Description

The design, construction, and installation of smaller punch or ganged glazing systems have been regulated through standards and building codes for decades. However, glazing systems like window wall, curtain wall, sloped glazing, storefront, and the newer glazed architectural structures from other countries are not strictly covered by these codes. Architects, designers, and AHJs have haphazardly turned to various standards developed in North America and other countries in an attempt to regulate their use, but with limited success and inconsistent results.

This shortcoming in regulation was addressed in the 2015 NBC under Sub-section 5.9.3 Other Fenestration Assemblies. The OBC adopted these changes for projects starting in January 2020 under Sub-section 5.10.3. Requirements include resistance to structural and environmental loads, air leakage, water penetration, heat transfer, and condensation resistance. Guidance in Appendix A describes background and intent behind the requirements, as well as definitions. This session will explain the intent and application of these requirements by those who were directly involved in their development in the NBC.

Learning Objectives

  1. Gain awareness of the new OBC requirements for curtain wall, window wall, storefront glazing, and glazed architectural structures.
  2. Understand how performance criteria can be demonstrated through code-accepted standards for laboratory and field testing.
  3. Gain the ability to change architectural practice to reflect these new provisions.
  4. Learn the definitions of these systems.


David Kayll, FMA, P.Eng.

David Kayll is a senior building science specialist, project manager, and principal in Morrison Hershfield’s Ottawa office. He has over 30 years of experience in building science, building envelope performance, energy performance, and facility management on multidisciplined architectural/engineering teams in new and renovation construction on heritage, institutional, industrial, commercial, and residential facilities. His experience includes 10 years on the East Coast, five on the West Coast, and more than 15 in the National Capital Area. David provides facility management consulting expertise on carbon-neutral studies, asset management plans, strategic accommodation strategies, and recommissioning plans. He is a member of the National Codes Commission Standing Committee on Environmental Separation and has served on the 2015 and 2020 code cycles, and will continue into the 2025 cycle.

Registration Fee

OAA Architect, LTOAA $39 + HST
OAA Interns $29 + HST
Non-Members: $59 + HST

To register, click here. 

** Registration will be closed on November 18 at 11:59 PM. **