Strength of materials involves massive variations in scale (e.g., forces in Kilonewtons, dimensions in millimeters, stresses in Megapascals). Always convert values to a standard system (like SI units) before calculating.
Unlike many introductory texts, Bedi introduces "bending moments" and "twisting moments" as vector quantities to help students distinguish between different mechanical effects. Comprehensive Stress Analysis: strength of materials d s bedi pdf