Stability aspects of structural steel design: Concepts and applications

By Prof. Mahendrakumar Madhavan | IIT Hyderabad

Learners enrolled: 407 | Exam registration: 10

ABOUT THE COURSE:

Structural stability and the design of steel structures are commonly perceived as distinct fields in structural engineering. However, the core philosophy behind the development of design provisions available in IS 800:2007 can be directly traced back to the fundamental understanding of structural stability. This course seeks to bridge the gap between these two domains by formulating stability equations based on fundamental principles. The course commences with simple spring bar models,introducing stability concepts, and then progresses to one-dimensional members like columns,beams, and beam-columns. Additionally, it covers two-dimensional elements such as plates, directly applicable to designing long-span structures like plate girders. Upon completing this course, students are expected to confidently navigate global steel design standards. The course structure will ensure that students gain a profound understanding of the origin of design provisions. This will enable them to comfortably apply the concepts learned to design safe and stable steel structures with an inherent understanding of the limitations and their applicability. Upon completing this course, students are expected to confidently navigate global steel design standards. The course's emphasis on tracing these standards back to fundamental principles in structural stability will significantly enhance the understanding of the students, equipping them to be industry-ready on a global scale.

INTENDED AUDIENCE: UG Civil Engineering students (3 rd year and above)/PG Structural Engineering /Industry Person

PREREQUISITES: Basic Design of Steel Structures

INDUSTRY SUPPORT:

TATA
Steel
SAIL
JSW
JSPL
L&T
Kirby Industry
Pennar Industry
Zamil
TATA BlueScope

Summary

Course Status :	Upcoming
Course Type :	Core
Language for course content :	English
Duration :	12 weeks
Category :	Civil Engineering Structural Design
Credit Points :	3
Level :	Postgraduate
Start Date :	20 Jan 2025
End Date :	11 Apr 2025
Enrollment Ends :	27 Jan 2025
Exam Registration Ends :	14 Feb 2025
Exam Date :	26 Apr 2025 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1: Introduction to stability: Concepts of stability, Types of stability, Methods of analyses in stability, Small deflection theory, Large deflection theory, Spring bar models

Week 2: Columns: Classical column theory, Pin-Ended columns, End-restrained Columns, Eccentrically loaded columns, Secant’s formula

Week 3: Imperfections in columns: Initially crooked columns, Effect of residual stresses, Experimental stub-column stress-strain curve, Perry-Robertson Formula

Week 4: Design curves for steel columns: Design equation as per IS:800, Column research council curve, Structural stability research council, Single column curve as per AISC, Design curves as per Eurocode

Week 5: Members under subjected to torsional loading: Types of torsion - St. Venant torsion and Warping torsion, Torsional and Flexural-Torsional buckling of columns – The three critical loads of members, Tutorial problem

Week 6: Members under subjected to transverse loading: Elastic critical moment for simply supported beams subjected to uniform bending moment – With closed (Rectangular section) and open cross-sections (I section); With different loading conditions {Unequal end moments, Central concentrated load}, Generic solution of Mcr for a generic loading case

Week 7: Members under subjected to transverse loading (Cont.): Elastic critical moment for beams - With different support conditions {Effective length factors for Lateral Torsional Buckling of Cantilever beams, Fixed beams}, Mcr equation for continuous beams, Beam with generic support conditions

Week 8: Design of beams: Based on Structural Stability Research Council Approach, Tutorial problem on laterally unsupported beam

Week 9: Plated structures: Introduction to stability of plates- Strength of plates underuniform edge compression -Shear buckling equations-PostOnline critical methods-Tension field method

Week 10: Design of Plate Girder: Introduction - Elements of Plate Girder – General Considerations-Stiffeners-Design Procedure-Tutorial problem

Week 11: Members under combined Axial load and Moments: Beam Column with Concentrated and Distributed Lateral Load; Effect of Axial Load on Bending Stiffness-Slope Deflection Equation- Moment magnification factors

Week 12: Behaviour of Beam-column - Nominal Strength-Instability in the Plane of Bending - Interaction Equation- Code design procedures- Design of Beam Column (Tutorial Problem)

Books and references

1. “Steel structures design and Behavior” by Salmon& Johnson
2. “Principles of structural stability theory” by Alexander Chajes.
3. “Structural stability – Theory and Implementation”by Chen and Liu.
4. “Design of steel structures” by Edwin Gaylord &Charles Gaylord.
5. IS 800:2007 GENERAL CONSTRUCTION IN STEEL - CODE OF PRACTICE

Instructor bio

Prof. Mahendrakumar Madhavan

IIT Hyderabad

Mahendrakumar Madhavan is a Professor in the Department of Civil Engineering, Indian Institute of Technology (IIT) Hyderabad, India. Prof. Madhavan teaches at both undergraduate and postgraduate levels, provides industry training by conducting short courses and seminars, assists practicing structural engineers by offering consultancy services, and leads the structural steel research group at IITH with the goal of enabling sustainable construction practices at home in India and around the globe. He obtained his Ph.D. from the University of Alabama at Birmingham, USA, and a Masters’s Degree from The National University of Singapore, Singapore. Prior to joining IIT Hyderabad, Prof.Madhavan worked as a Structural Engineer at Alabama Power Company, Birmingham, and is a Registered Professional Engineer (PE) in the State of Alabama USA. Prof. Madhavan’s principal research interests lie in the area of physical testing of structural members and systems, numerical modeling through the use of commercially available finite element packages,and the development of new design methods for steel-intensive structures. He has published more than 60 peer-reviewed internationally reputed journals and is the Chair of the "American Society of Civil Engineers (ASCE) Structural Engineering Institute (SEI) Structural Members Committee on Metals"and a member of “ASCE SEI Cold-Formed Steel Members Committee". He is an Editorial board member of the Journal of Structures and is an Associate Editor for ASCE Journal of Structural Engineering. Prof. Madhavan is a Fellow of the American Society of Civil Engineers (ASCE), USA, a Fellow of the Institution of Civil Engineers (ICE), London, and is also the first Indian to be elected as a Fellow of ASCE’s Structural Engineering Institute (SEI).

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.

The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).

Date and Time of Exams: EXAM DATE : April 26, 2025 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.

Registration url: Announcements will be made when the registration form is open for registrations.

The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.

Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

Please note that assignments encompass all types (including quizzes, programming tasks, and essay submissions) available in the specific week.

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Hyderabad .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team