For finding the buckling resistance of a stiffener in a plate girder, the area of the web to be added is
- A20 t w from one side
- B20 tw from each sideCorrect
- C28 t w from one side
- D28 t w from each side
Solution
Concept
Effective section of a stiffener
Step-by-step solution
1. A stiffener acts as a column with the web strip 20 tw on each side.
Explanation
The web portion of 20 tw on either side of the stiffener is added to the stiffener area.
Why the other options are wrong
28 tw is for bearing stiffeners in some codes.
Shortcut
20 tw each side.
Correct answer: B) 20 tw from each side