This is a WELDED PART, the welding is marked in the drawing at the left side. http://img94.imageshack.us/img94/5414/torsionp.jpg [Broken] My lecturer claims that the moment here causes torsion! How come? I can't imagine torsion working without a 3D model! http://img690.imageshack.us/img690/9803/stresses.jpg [Broken] Bending, on the other hand, I can imagine without a 3D model. How did he determine it's torsion?