S.K. Duggal 's Limit State Design of Steel Structures is a foundational text centered on the IS: 800-2007 code, which transitioned Indian steel design from the Working Stress Method to the more rational Limit State Method (LSM). Core Philosophy of Limit State Design (LSM)
Beams (Flexural Members): Distinguishing between laterally supported and unsupported beams and calculating their design strength against bending and shear.
Limitations
Limit State of Strength (Collapse): Focuses on the maximum load-carrying capacity before failure due to fracture, buckling, or overturning.
Limit State Design of Steel Members
The design strength of a steel member is calculated using the characteristic strength of the material and the partial safety factor for material strength.
Critical Evaluation: Limitations However, no text is without flaws. For a book published in the 21st century, Limit State Design of Steel Structures is surprisingly reticent on advanced computational tools. There is minimal discussion of Finite Element Method (FEM) validation or the use of software like STAAD.Pro or ETABS. In an era where graduate engineers must validate software outputs, the book’s exclusive focus on hand-calculations, while essential for learning, feels incomplete. limit state design of steel structures by sk duggal
Suggested citation for the article: Duggal, S.K. (2025 Reference). Limit State Design of Steel Structures (Standard Edition). New Delhi: Oxford University Press. (Based on IS 800:2007).