Question

The effective width of hot-rolled and welded plates is given by

(a) be/b = α √(fy/fcr)

(b) be/b = α √(fcr x fy)

(c) be/b = α √(fcr +fy)

(d) be/b = α √(fcr/fy)

I had been asked this question in class test.

Query is from Behaviour and Ultimate Strength of Plates and Possible Failure Modes topic in chapter Plastic and Local Buckling Behaviour of Steel of Design of Steel Structures

Answer 1

Correct choice is (d) be/b = α √(fcr/fy)

Easy explanation: The effective width of hot-rolled and welded plates is given by be/b = α √(fcr/fy), where α is the parameter that indicates the inclusions of influence of initial curvatures and residual stress. Generally α=0.65.