Which of the following sections should preferably be used at places where torsion occurs?
A. Angle section
B. Channel section
C. Box type section
D. Any of the above
Answer: Option C
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A. Bottom chord area
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For 45 degree fillet K=0.7
Effective thickness =t=ks
=0.7*s
Here,
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= 1/0.7
=1.414