", NSF /C EE- 820 37 P B8 3-127845 PMFSEL REPORT NO. 82-3 JULY 1982 SHEAR STRENGTH AND DETERIORATION OF SHORT REINFORCED CONCRETE COLUMNS UNDER CYCLIC DEFORMATIONS By H. UMEHARA 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 , PFR·7720816 DEPARTMENT OF CIVIL ENGINEERING / Phil M. Ferguson Structural Engineering Laboratory THE UNIVERSITY OF TEXAS AT AUSTIN Rt:PROOUCED BY NATIONAL TECHNI CAL INFORMATION SERVICE U,S. D£PARTMENI OF COM MERCE SPR1NGF 1 HD, VA. 22161 INFORMATION RESOURCES NATIONAL SCIENCE FOUNDATION