This report is an update of the original state-of-the-art report published in the March–April and May–June 1997 issues of the
PCI Journal. The original report was later published as a reprint (JR-403). After the publication of the original report, the use of
precast/prestressed concrete sandwich wall panels became more widespread in the United States. Also, the publication led to a
better understanding of the proper use, performance, and technical aspects of these specialty panels.