minimum weight

minimum depth

maximum weight

minimum thickness of web

vertical intermediate stiffener

horizontal stiffener at neutral axis

bearing stiffener

none of the above

shear buckling of web plate

compression buckling of web plate

yielding

all of the above

5 mm

6 mm

8 mm

10 mm

increasing the web thickness

providing suitable stiffeners

increasing the length of the bearing plates

none of the above