Question

Which of the following is not true?

(a) for optimum bending resistance, beam material should be near neutral axis

(b) for optimum bending resistance, beam material should be far away from neutral axis

(c) for optimum bending resistance, web area of beam has to be adequate for resisting shear

(d) maximum bending and maximum shear usually occur at different cross section

The question was asked during a job interview.

This interesting question is from Beam Types and Sections in portion Design of Beams of Design of Steel Structures

Answer 1

The correct option is (a) for optimum bending resistance, beam material should be near neutral axis

Best explanation: For optimum bending resistance, beam material should be far away from neutral axis and web area of beam has to be adequate for resisting shear. Maximum bending and maximum shear usually occur at different cross section. in continuous beams, they may occur at same cross section near interior supports, but interaction effects are normally neglected.