Steel part 3 slides 25-50

End stiffeners in plate girders are also known as

• Horizontal stiffeners

• Bearing stiffeners

• Buckling stiffeners

• Intermediate stiffeners

End stiffeners are located

• At mid-span of girder

• Only on top flange

• At both ends of the girder

• Along the web randomly

Main function of end stiffeners is to

• Improve aesthetics

• Take load from beam and transfer to support

• Connect flange and web

• Reduce flange thickness

Crushing of web near girder supports is resisted by

• Horizontal stiffeners

• Web splices

• End stiffeners

• Top flanges

Intermediate stiffeners improve

• Flange resistance

• Web buckling strength

• Aesthetic value

• Bolt grip

Intermediate stiffeners are needed when web thickness is less than

• 1/45 of web depth

• 1/85 of web depth

• 1/20 of flange width

• 1/100 of web depth

Horizontal stiffeners are also called

• Cross stiffeners

• Longitudinal stiffeners

• Corner stiffeners

• Diagonal stiffeners

Continuous horizontal stiffeners

• Are placed randomly

• Connect all transverse stiffeners and carry load

• Are only for decoration

• Are not recommended in girders

Discontinuous horizontal stiffeners

• Connect all ends

• Do not touch transverse stiffeners

• Carry loads from flanges

• Are welded to the supports

Discontinuous stiffeners function to

• Transfer bending moment

• Provide buckling resistance

• Improve rivet shear

• Reduce span