The New OBC Subsection 5.10.4 ‘Other Fenestration Assemblies’

How does the 2015 NBCC and the January 2020 OBC Amendment change your practice? Watch this webinar to learn about new code requirements, identify how they depart from approaches used and give background information to help teams understand this code change.

Event Information

The 2015 NBCC and the January 2020 OBC revision introduced a new category of defined products and assemblies in Division B, Part 5 ‘Environmental Separation’. Subsection 5.10.4 ‘Other Fenestration Assemblies’ addresses window wall, curtain wall, storefront, and glazed architectural structures, all of which fall outside of the North American Fenestration Standard, AAMA/WDMA/CSA 101/I.S.2/A440 (aka NAFS), but are not otherwise dealt with by standards recognized by Canadian building codes. It defines structural and environmental loads and test methods and performance levels for heat transfer, air leakage and water penetration control. This presentation will offer a summary of the new requirements, identify how they depart from approaches commonly used previously, and give background information to help designers and builders understand intents and limitations of this important Code change.

Learning Objective 1:
Learn recent changes to the National Building Code of Canada and the Ontario Building Code, to address fenestration systems excluded from the North American Fenestration Standard, AAMA/WDMA/CSA 101/I.S.2/A440.

Learning Objective 2:
Learn the definitions of these systems, addressed in Division B, Part 5, Subsection 5.9.3 and of the NBCC and 5.10.4 of the OBC, ‘Other Fenestration Assemblies’.

Learning Objective 3:
Learn about mandated test methods and performance requirements that now apply to these systems.

Learning Objective 4:
Gain an understanding of limitations of these code changes, and what could be done to overcome them.

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Anik Teasdale-St. Hilaire, Ph.D., P.Eng.

Anik has worked on a variety of projects, including: design and construction review of new residential, commercial, institutional and recreational buildings; building envelope condition assessments; glazing, glazing systems, sealant and roof failure investigations; building envelope rehabilitation projects, and; hygrothermal simulations of building envelope assemblies. Anik has written many scientific papers on the topic of her Ph.D. thesis, which investigated the hygrothermal performance of wood-frame wall assemblies wetted by wind-driven rain infiltration both experimentally and using a numerical simulation tool.