Dr. S K Duggal is Retd. Professor in the Civil Engineering Department at Motilal Nehru National Institute of Technology (MNNIT), Prayagraj. He obtained his BE, ME and PhD degrees from Allahabad University, and has an experience of more than 40 years in teaching at both undergraduate and postgraduate levels. He also wrote Strength of Materials (Mechanics of Solids) for the undergraduate students, GATE, AMIE, etc. Apart from this, he has presented and published numerous research papers in several national and international conferences and journals, respectively.