Presentation Overview
Wednesday, MAY 6, 2:15PM-3:15PM
Nicollet Ballroom
The presentation will provide a basic overview of a building’s structural expansion joints as they slice through to the building envelope’s air, moisture (water and vapor), and thermal control layers. Expansion joints are one of building envelope’s most misunderstood components that are required to accept a broad range of movements while integrating as part of fire, acoustic, and pressure rated assemblies. The presentation will follow the evolution of building expansions joints from design through final construction and testing. Examples are provided of how this evolution is typically less than desirable as well as suggested best practices are discussed. The expansion joint must overcome complexities created by connecting numerous build envelope systems, installed by various trade partners, containing a wide variety of materials with challenging geometries. An overview of the several types of expansion joints and their limitations is included. Several critical transitions to adjacent systems are identified and their details reviewed. The presentation concludes with some humorous examples of how the as-built condition does not always match the design assumptions.
Learning Objectives:
- Locate the building expansion joints that slice through the building envelope.
- Identify the available types of expansion joints and discuss their benefits and limitations.
- Discuss challenges associated with detailing and installation of expansion joints
- Review suggested best practices for the design and installation of expansion joints.
John Posenecker, Terracon Consultants
Mr. Posenecker is the Senior Principal and the Building Enclosure Practice Leader for Terracon Consultants, Inc. He is a registered engineer in the State of Texas and Oklahoma. His experience includes design, construction, testing and diagnostic investigation of building envelope systems. Previously he spent 10 years with a large regional waterproofing and roofing contractor, 8 years with an acoustic specialty contractor, and 15 years in the commercial nuclear power industry. Throughout his career, Mr. Posenecker has participated in a wide variety of projects associated with the building envelope and he specializes in waterproofing. He is the Vice Chair of the National Building Enclosure Council and is a board member for the Air Barrier Association of America (ABAA) and the ABAA Standards Institute (ASI).
Trevor Brown, JE Dunn Construction
Trevor has been with JE Dunn Construction for 19 years and has dedicated 26 years to the Construction Quality profession. As an experienced Quality Director, he has a proven track record in the construction industry, showcasing his expertise in Building Envelope Design, Constructability Reviews, Mock-ups, Construction Processes, Pre-construction Activities, Team Leadership, Teaching/Training, and Contract Management.
Trevor is a highly skilled quality assurance professional, holding multiple industry certifications specializing in building structures, envelope systems, testing, and performance. He is a respected member of the building enclosure community. Acting as technical resource for structure systems, building envelope design, general construction, and code compliance.
“My passion as a quality expert is to provide solutions to the most complex problems on our projects.”
