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Steel Structure Design - Engineering

Q1:

The thickness of the web of a mild steel plate girder is less than d/200. If only one horizontal stiffener is used, it is placed at

A the neutral axis of the section

B 2/3rd of the depth of the neutral axis from the compression flange

C 2/5th of the depth of the neutral axis from the compression flange

D 2/5th of the height of the neutral axis from tension flange

E none of these.

ANS:C - 2/5th of the depth of the neutral axis from the compression flange

T<d/200.
200<d/t implies d/t>200.

1st Stiffener. 2d from compression flange.

2nd Stiffener. 5d from compression flange.