Step by step, he followed Khurmi’s method. First, find the reaction. Then the shear force diagram. Then the maximum bending moment at the fixed end. He calculated the moment of inertia for a square section. Then the section modulus. Then stress.
And then, in a small note at the bottom of a page—something he’d skipped for months—Khurmi had written in italics: “In practical design, stress concentration at the fixed support often doubles the nominal stress. Always check the joint detail.”
And somewhere, in the great library of engineering souls, R. S. Khurmi nodded once, turned a page, and smiled. R S Khurmi Strength Of Materials
He paused. The number was high—too high for mild steel.
Arjun had always hated this book. It was too thick, too dry, and the problems were sadistically progressive—just when you understood simple tension, it hit you with compound stress and principal planes . But tonight, desperation forced respect. Step by step, he followed Khurmi’s method
“Thank you, sir,” he whispered.
Khurmi listed them like a judge delivering verdicts: Maximum principal stress theory (Rankine). Maximum shear stress theory (Guest’s). Arjun chose the latter for ductile materials. He recalculated. Still failure. Then the maximum bending moment at the fixed end
“Factor of safety,” he muttered, and flipped to Chapter 14: Theories of Failure .