Limit State Design Of Steel Structures By Sk Duggal

, which ensures structures remain safe under extreme loads (Ultimate Limit State) while remaining functional during everyday use (Serviceability Limit State). Adherence to Standards : The text is strictly aligned with IS: 800-2007

Style and target audience

Despite these limitations, Duggal’s text performs a crucial cultural function. It has standardized the teaching of steel design across dozens of Indian universities. By moving decisively away from the empirical, WSM-heavy texts of the 1980s, Duggal empowered a generation of engineers to design leaner, more economical steel structures. The book’s emphasis on code-based reasoning —justifying each design choice with a clause number—instills professional discipline. It teaches not just how to design, but why a particular thickness, bolt spacing, or stiffener location is chosen. limit state design of steel structures by sk duggal

The design focuses on the laterals-torsional buckling of un-restrained beams, the effective length factor, and the bending moment reduction factor ($\alpha_LT$). Duggal’s examples highlight how LSM allows for higher utilization of steel’s plastic reserve compared to WSM. , which ensures structures remain safe under extreme

In limit state design, a structure is designed to satisfy several limit states, which are: By moving decisively away from the empirical, WSM-heavy