Firstly this is Solid Mechanics not statics. Secondly the orientation does not matter as long as you are consistent. When you use Bending stress equation make it negative if the point you are examining is in compression. That’s it
@@seabasschukwu6988 hi guys. does anyone of you know why his Shear Diagram has negative value (under the X-axis i meant)? if i do the tearing method, it results in positives, i mean above X-axis. It's like his diagram but mine just mirrored above X-axis