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This report presents the findings from the NEESR-II project, which examined the system behavior factors for composite and mixed structural systems, focusing on concrete-filled tubes (CFTs). Four types of CFT specimens were tested at the Georgia Institute of Technology MAST Laboratory: RCFT20x12x0.3125, CCFT20x0.25, CCFT12.75x0.25, and HSS12.75x0.25. A total of 18 specimens were created, utilizing A-500 Grade B steel, with a combined weight of 20 kips. The results include an analysis of steel details and mill certification, providing insights for future structural innovations.
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NEESR-II: SYSTEM BEHAVIOR FACTORS FOR COMPOSITE AND MIXED STRUCTURAL SYSTEMS CFT Specimens Roberto Leon Tiziano Perea Georgia Institute of Technology
CCFT12.75x0.25 Specimen HSS12.75X0.25 SPECIMEN
Steel details in the Specimens(A-500 Gr. B steel) CCFT Specimens RCFT Specimens Number of specimens: 18 HSS Total Weight: 20 kips