Design Of Steel Structures

IIT Guwahati Course , Prof. Damodar Maity

Lecture 34: Gantry Girders

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Lecture Details :

Lecture Series on Design of Steel Structures by Dr.Damodar Maity, Department of Civil Engineering, IIT Guwahati. For more details on NPTEL visit

Course Description :

I. Introduction
Properties of Structural Steel, I. S. Rolled Sections, I. S. Specifications
II. Design Approach
Factor of Safety, Permissible and Working Stresses, Elastic Method, Plastic
Method, Introduction to Limit States of Design
III. Connections
Type of Connections, Riveted, Bolted and Welded Connections, Strength, Efficiency
and Design of Joints, Modes of Failure of a Riveted Joint, Advantages and
Disadvantages of Welded Joints, Design of Fillet and Butt Welds, Design of
Eccentric Connections
IV. Tension Members
Net Sectional Area, Permissible Stress, Design of Axially Loaded Tension Member,
Design of Member Subjected to Axial Tension and Bending
V. Compression Members
Modes of Failure of a Column, Buckling Failure: Eulers Theory, Effective Length,
Slenderness Ratio, Design Formula: I.S. Code Formula, Design of Compression
Members, Design of Built-Up Compression Members: Laced and Battened Columns
VI. Beams
Design Procedure, Built-Up Sections, Plate Thickness, Web Crippling, Web
Buckling, Connections and Curtailment of Flange Plates
VII. Beam Column
Eccentricity of Load, Interaction Formulae, Design Procedure, Eccentrically Loaded
Base Plates
VIII. Column Base
Slab Base, Gusseted Base, Grillage Foundation

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