Q.

As per IS specification, the beam sections should be

A. not symmetrical about any principal axes
B. at least symmetrical about one of the principal axes
C. symmetrical about all principal axes
D. unsymmetrical about all principal axes
Answer» B. at least symmetrical about one of the principal axes
Explanation: the beam sections should be at least symmetrical about one of the principal axes as per is specification. angle and t- sections are inherently weak in bending while channels can only be used for light loads.
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