A rolled ISMB 350 section (depth = 350 mm, width of flange = 140 mm, thickness of web = 8.1 mm, thickness of flange = 14.2 mm) is used as a compression member. Considering the buckling about Y-Y axis as per IS 800 : 2007, the corresponding buckling class to which the beam belongs to is:
1
d
2
a
3
c
4
b