chapter  5
37 Pages

PLATE GIRDERS

To be competitive and cost effective, the web of a plate girder is made relatively thin compared to rolled section, and stiffeners are introduced to prevent buckling either due to compression from bending or shear. Tension field action is utilized to increase the shear buckling resistance of the thin web. Stiffeners are also required at load points and supports. Thus the side elevation of a plate girder has an array of stiffeners as shown in Figure S.l(b).