By Elizabeth A. Hnatiw, AIA, LEED AP, and Kristen T. Anderson, AIA, Hoffmann Architects + Engineers
Detailing and joining individual material components into a unified whole is essential to the technical art of building enclosure design. Even basic enclosure details consist of multiple components, each with distinct material properties and performance characteristics that demand thoughtful consideration. To construct a long-lasting assembly, the designer must consider each of the parts, their connections to one another, and how they behave as a unified whole.
LEARNING OBJECTIVES
After reading this article, you should be able to:
+ IDENTIFY the key principles and challenges associated with detailing and joining dissimilar materials in building enclosure design.
+ UNDERSTAND the importance of material compatibility, sacrificial components, and prevention of galvanic action in ensuring the longevity and performance of building elements.
+ LEARN strategies for addressing differential movement between materials, including the selection and implementation of appropriate joint designs and connections.
+ GAIN knowledge of effective techniques for surface preparation, system terminations, moisture and air infiltration mitigation, and the use of isolation joints and membranes in building enclosure design.
About the Authors
Elizabeth A. Hnatiw, AIA, LEED AP BD+C, is a Senior Architect with Hoffmann Architects + Engineers in Virginia, where she often investigates and resolves building enclosure distress stemming from material interactions.
Kristen T. Anderson, AIA, Staff Architect with Hoffmann Architects + Engineers in New York, is experienced with transitions and details for a wide range of construction types.
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