This article explores why this book is considered an indispensable resource for engineering students, competitive exam aspirants (IES, GATE, UPSC), and practicing structural consultants. To appreciate SK Duggal’s work, one must first understand the philosophy it teaches. Traditional Working Stress Design assumed materials were linear-elastic and buried safety factors within allowable stresses. This method failed to predict actual collapse behavior.
In the world of civil engineering, where safety and economy dance on a knife-edge, the choice of design philosophy is paramount. Gone are the days of the simplistic "Working Stress Method" (WSM), which wrapped structural integrity in an overly thick blanket of conservatism. Enter the modern era: Limit State Design (LSD) . And when it comes to mastering LSD for steel structures in the Indian subcontinent, one textbook has emerged as the definitive bible: "Limit State Design of Steel Structures" by SK Duggal. limit state design of steel structures by sk duggal
Whether you are calculating the net area of a double-angle tension member or designing a gantry girder for a 50-ton crane, Duggal’s text ensures you never lose sight of the physical behavior of steel—elastic, plastic, and ultimate. This article explores why this book is considered
For the civil engineer building India’s next skyscraper, bridge, or factory shed, this book is not just a reference; it is a foundation. Duggal, S.K. (2025 Reference). Limit State Design of Steel Structures (Standard Edition). New Delhi: Oxford University Press. (Based on IS 800:2007). This method failed to predict actual collapse behavior