I -. t:. SE ",,, ... c. \-\ -1 UILU - ENG - 90 - 2001 • "'- ii - L ENGINEERING STUDIES <. .Q -' '" • w= r--.. bl = • I I I I I I I I I I I I I I I RR1422 7567 ISSN: 0069-4274 LATERAL BUCKLING OF SHORT I-BEAMS UNDER CYCLIC LOADING By - Keith D. Hjelmstad '---an d Sang-Gab Lee A repo rt to sponsors: The National Science Foundation The American Institute of Steel Construct ion Department of Civil Engineering University of Illinois at Urbana-Champaign Urbana, Illinois April 1990