EFFECT OF AXIAL LOAD ON SHEAR BEHAVIOR OF SHORT RC COLUMNS UNDER CYCLIC LATERAL DEFORMATIONS By H. Ramirez and J. O. Jirsa Report on a Research Project Sponsored by National Science Foundation Directorate for Applied Science and Research Applications Division of Problem-Focused Research Applications Grant No. ENV77-208l6 Phil M. Ferguson Structural Engineering Laboratory The University of Texas at Austin June 1980 I i