Q.

The modes of failure of plate girder are

A. by yielding of compression flange only
B. by buckling of tension flange only
C. by yielding of tension flange and buckling of compression flange
D. by yielding of compression flange and buckling of tension flange
Answer» C. by yielding of tension flange and buckling of compression flange
Explanation: the limit states considered for plate girder are yielding of tension flange and buckling of compression flange. the compression flange buckling can take place in various ways, such as vertical buckling into the web or flange local buckling. flange buckling can also be caused due to lateral- torsional buckling.
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