According to IS 800, the maximum effective slenderness ratio for a member carrying compressive loads resulting from dead loads and imposed loads is:

Compression members carrying loads due to dead loads and imposed (live) loads

Members subjected to compressive forces due only to wind or earthquake loads, provided the resulting deformations do not adversely affect stresses in any part of the structure

Compression flange of a beam restrained against lateral–torsional buckling

Members normally acting as ties in roof trusses or bracing systems, not considered effective when subjected to stress reversal due to wind or earthquake forces