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Facades+: WORKSHOP C: Building Envelope Thermal Bridging Guide: Whole Building Energy Modeling

December 3, 2021

Facades+: WORKSHOP

Facades+ is back and this year it is in person. The conference will focus on the latest facades recently finished or under construction and the innovative techniques at play. From climate-responsive facades to the future of regional building, Facades+ Seattle offers a great way to learn and connect with fellow AEC professionals.  Join us December 3, 2021. More information and registration here.

Session Overview: Building Envelope Thermal Bridging Guide: Whole Building Energy Modeling

Both the Washington State Energy Code and the Seattle Energy Code have introduced restrictions on UA trade off limiting this to 20% and 10% of the baseline building respectively. Learn how to use the clear field values in the Building Envelope Thermal Bridging Guide to accurately account for thermal bridging in UA calculations. The latest publication of the Building Envelope Thermal Bridging Guide is by far one of the most complete industry reference for building enclosure U-factors. Develop an understanding on the type of building typologies that may struggle to meet this new requirement and how parametric envelope studies can help identify potential compliance path including leveraging new enclosure technologies. Explore the process for incorporating the impact of linear transmittance at key enclosure interfaces to further dial in the performance of enclosure on projects pursuing the Target Performance Path, Passive House, Living Building or net zero performance. Learning Objectives: Discuss how and where thermal bridges occur and how they can be mitigated. Describe the impacts of thermal bridging and effective R-values on building energy use. Identify a combination of passive design strategies (including thermal bridging reduction) and design process strategies (such as parametric energy modelling) as part of integrated design that can lead to high performance low energy and low carbon buildings. Summarize available design resources to apply the above concepts to design higher performance buildings.

This session will be presented by Stéphane Hoffman, Vice President & Senior Building Science Specialist; Jamie Mckay, PE, LEED Fellow, Building Envelope Commissioning Specialist; Ivan Lee, P.Eng., LEED AP BD+C, Building Science Specialist, Geoffrey Yamasaki, LEED AP, BEMP.


December 3, 2021
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