Question

The check for design bending strength for cantilever beams is given by

(a) Md = 2.4Zpfy/γm0

(b) Md ≤ 1.5Zpfy/γm0

(c) Md ≤ 1.2Zpfy/γm0

(d) Md ≥ 1.5Zpfy/γm0

I got this question in exam.

Origin of the question is Design Strength of Laterally Supported Beams topic in division Design of Beams of Design of Steel Structures

Answer 1

Correct choice is (b) Md ≤ 1.5Zpfy/γm0

For explanation I would say: The check for design bending strength for cantilever beams is given by Md ≤ 1.5Zpfy/γm0 to ensure that onset of plasticity under unfactored loads – dead loads, imposed loads and wind load- is prevented.