Question

Which among the following comparison between angle and flat bars is not true?

(a) for light loads, angles are preferred over flat bars

(b) flat bar tension members tend to vibrate during passage of load in light bridges

(c) flat bars are used instead of angles in case of stress reversal

(d) angles are used instead of flat bars in case of stress reversal

The question was posed to me in homework.

The above asked question is from Tension Members and their Types in division Design of Tension Members of Design of Steel Structures

Answer 1

Right answer is (c) flat bars are used instead of angles in case of stress reversal

The best explanation: For light loads, angles are preferred over flat bars. In many light bridges, flat bar tension members tend to vibrate during passage of load. In case of stress reversal angles are more suitable whereas flat bars are unfit to carry compressive load on reversal due to their small radius of gyration in one direction.