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8 detail was developed and tested. Review of some connection 1.4 Summary of Experimental details resulted in recommended details that were ready for Specimens implementation for limited ductility connection applications. These limited ductility details were the grouted duct connection, During the course of this research program, a number of grouted sleeve coupler connection, and partially precast promising precast bent cap details were investigated through shell connection. The proposed connections for testing and experimental testing. These specimens were developed to meet validation were presented as well as a rigorous experimental a variety of performance objectives for sites located throughout and analytical program for performing the required validation U.S. seismic regions. A summary of these specimens is provided studies. in Table 1.1. Table 1.1. Summary of experimental specimens. Code Specimen Name Specimen Specimen Purpose Type CIP Cast-in-place Beam-to- Control specimen detailed in accordance control specimen column with Recommended LRFD Guidelines for emulative the Seismic Design of Highway Bridges (2) for high seismic applications. GD Grouted duct Beam-to- Grouted duct specimen designed to specimen column provide high ductility response with emulative similar response to CIP specimen. CPFD Cap pocket full Beam-to- Cap pocket specimen designed to provide ductility column high ductility response with similar specimen emulative response to CIP specimen. Detail uses a corrugated metal pipe to provide stay-in- place form and joint shear reinforcement. CPLD Cap pocket Beam-to- Cap pocket specimen design with limited ductility column alleviated seismic detailing intended to specimen emulative provide limited ductility for regions of low to moderate seismicity. Detail uses similar corrugated metal pipe detail to CPFD. HYB1 Conventional Beam-to- Hybrid specimen detailed with hybrid specimen column conventional spiral confinement hybrid reinforcement and full-length mild reinforcement. Detail is intended to be a hybrid detail most similar to traditional CIP construction. HYB2 Concrete filled Beam-to- Hybrid specimen using full length steel pipe hybrid column shell acting as confinement and shear specimen hybrid reinforcement. Mild reinforcement used only at joint to provide energy dissipation and terminated into the column. HYB3 Dual steel shell Beam-to- Hybrid specimen using two full length hybrid specimen column shells (outer steel and inner corrugated hybrid metal pipe) acting as confinement and shear reinforcement. Mild reinforcement utilized only at joint. Dual shell detail intended to reduce weight of column section for precasting. INT Post-tensioned Girder-to- Integral specimen using precast post- integral specimen beam tensioned girders spliced through the emulative precast bent cap. Girders are discontinuous at bent cap leaving a cold joint between the members. Intended to provide a constructible precast option for high seismic regions requiring integral response.