Lateral torsional buckling (LTB) occurs when a beam under bending about its strong axis deflects laterally and twists. For LTB to be analyzed accurately, it is crucial to assume certain conditions. If the beam has no initial imperfections and behaves elastically, it simplifies the analysis because the material properties are consistent and predictable under loading. When loaded by unequal and opposite end moments in the plane of the web, the beam experiences a bending moment causing potential buckling. Residual stresses and boundary conditions like simply supported ends influence the critical buckling moment. Simplified conditions help in understanding and predicting LTB behavior more effectively.