Reference Source for mechanical engineers. This webiste currently includes information about strengths of materials. The subjects under strengths of materials that are included are axial stress and deflection. It also discusses torsional stress and rotation. Beam theory is al included. The subjects that are included under beam theory include, area moment of inertia, shear and moment diagrams, how to calculate normal stress and transverse shear stress, and how they differ. It also shows how to calculate beam deflection. It also goes over how to solve statically indeterminate problems for axial loaded structures, torionally loaded structures and beams. Finally, each page includes a video to provide further detail to each page.