precast insulated wall panels, composite shear connectors, reinforced concrete, prestressed concrete


To achieve full or partial-composite action in prestressed concrete sandwich panel walls, the engineer must obtain a percent composite action from a connector manufacturer, making some engineers uncomfortable. Engineers are dependent upon the recommendations given by the connector manufacturers to establish their designs. This project tested six full-scale sandwich panel walls to evaluate the percent composite action of various connectors and compare the results to those provided by the composite connector manufacturers. This study concluded that the reported degrees of composite action from each manufacturer are considered conservative in all instances for the connectors tested in this paper. Additionally, the intensity and type of connectors are important factors in determining the degree of partial composite action in a panel.

Original Publication Citation

Al-Rubaye, S., Sorensen, T., Maguire, M. (2017). “Investigating Composite Action at Ultimate for Commercial Sandwich Panel Composite Connectors.” Proceedings of the PCI Convention and National Bridge Conference. Cleveland, OH.

Document Type

Conference Paper

Publication Date



Proceedings of the PCI Convention and National Bridge Conference




Ira A. Fulton College of Engineering


Civil and Environmental Engineering

University Standing at Time of Publication

Assistant Professor