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Partially Composite Insulated Walls Overview and General Behavior

September 17, 2021 from 2:00pm to 3:00pm Central Standard Time

Marc Maguire, PhD

An overview of partially composite insulated walls that covers general information regarding structural and envelope performance as well as overview of the testing program and generalized conclusions.

LEARNING OBJECTIVES

  • What are partially composite insulated walls
  • Advantages of partially composite insulated walls
  • Overview on behavior of partially composite wall testing program
  • General engineering of partially composite insulated walls

Since the early 1980s, insulated concrete sandwich panels have been utilized as a design and construction technique for tilt-up. These types of panels are comprised of an inner and outer wythe of concrete, separated by a layer of rigid foam insulation. Connectors are used to fasten the two wythes of concrete together. To date, the majority of the insulated panels have been designed using non-composite action, meaning that only one wythe of concrete was considered for the panel’s structural integrity. The widespread acceptance and adoption of the International Energy Conservation Code (IECC) has reinforced the insulating benefits of sandwich panel systems and motivated many in the tilt-up industry to take a closer look at ways to maximize performance and constructability by creating a standard for composite behavior of insulated systems. To that end, the Tilt-Up Concrete Association (TCA) has collaborated with the University of Nebraska’s Durham School of Architectural Engineering and Construction to conduct what is believed to be the largest, full-scale field testing of this type with the goal of developing a slender wall design methodology to predict composite behavior under combined axial and bending forces. Learn more >