Design of Connections in Steel Structures | NPTEL Course Guide
Course Details
| Exam Registration | 140 |
|---|---|
| Course Status | Ongoing |
| Course Type | Core |
| Language | English |
| Duration | 4 weeks |
| Categories | Civil Engineering, Structural Design |
| Credit Points | 1 |
| Level | Postgraduate |
| Start Date | 16 Feb 2026 |
| End Date | 13 Mar 2026 |
| Enrollment Ends | 16 Feb 2026 |
| Exam Registration Ends | 27 Feb 2026 |
| Exam Date | 17 Apr 2026 IST |
| NCrF Level | 4.5 — 8.0 |
Mastering the Design of Connections in Steel Structures
The integrity and safety of any steel structure hinge not just on the strength of its beams and columns, but critically on the design of the connections that hold them together. A poorly designed connection can become the weak link, leading to catastrophic failure. The NPTEL course "Design of Connections in Steel Structures", instructed by Prof. Anil Agarwal of IIT Hyderabad, provides an essential deep dive into this specialized field of structural engineering.
Course Overview and Instructor Profile
This is a postgraduate-level course spanning four weeks, designed to demystify the complex behavior of steel connections. The course moves from fundamental principles to advanced applications, ensuring a robust understanding of both analysis and design processes.
The course is led by Prof. Anil Agarwal, a distinguished expert in the field. With a B.Tech. and M.Tech. from IIT Kanpur and a Ph.D. from Purdue University, Prof. Agarwal's research focuses on the behavior and design of steel and composite structures, with significant contributions to fire resistance design. His academic and practical insights bring immense value to the course content.
Who Should Enroll?
This course is meticulously crafted for a wide audience:
- Undergraduate and Graduate Students of structural engineering seeking to solidify their theoretical knowledge with practical design skills.
- Practicing Structural Engineers and Consultants looking to update their knowledge with current codes and best practices, especially in seismic design.
- Architects who wish to understand the implications of connection design on architectural form and feasibility.
Prerequisites and Industry Relevance
To fully benefit from this course, a foundation in Structural Analysis, Construction Materials, and Mechanics of Solids is recommended. The course finds strong support from key industries, including:
- Structural Design and Architectural Firms
- Steel Construction Companies
- Steel Fabricators
Detailed Course Layout
The curriculum is structured to build knowledge progressively over six comprehensive modules:
Week 1-2: Foundation Principles
The course begins with the bedrock of connection design.
- Basic Principles of Bolted Connection Design: Covers types of bolts, failure modes (bolt shear, bearing, tear-out), slip-critical connections, and design as per codes like IS 800.
- Basic Principles of Welded Connection Design: Explores weld types (fillet, groove), electrodes, effective areas, and the design of welded joints for various load conditions.
Week 3: Connections in Static Framing
- Connections in Non-Seismic Frames: Focuses on the design of simple connections (transferring shear only) and ordinary moment connections (transferring shear and moment) for buildings in non-seismic zones. Includes practical solved examples.
Week 4: Advanced and Seismic Design
- Connections in Seismic Frames: Delves into the crucial design of ductile moment connections (e.g., Reduced Beam Section - RBS). This module teaches how to design connections that can yield and dissipate energy during an earthquake, preventing brittle failure.
- Connections in Braces and Truss Members: Addresses the unique challenges in designing connections for axially loaded members, including the detailed design of gusset plates considering yield, buckling, and block shear.
- Additional Topics: May cover special connections, fatigue considerations, or design for fire resistance, reflecting the instructor's expertise.
Key Learning Outcomes
Upon completion, participants will be able to:
- Understand the fundamental load transfer mechanisms in different connection types.
- Analyze and design bolted and welded connections for strength and serviceability.
- Differentiate between design philosophies for seismic versus non-seismic regions.
- Perform the design of critical elements like moment-resisting frames and gusset plates.
- Apply relevant code provisions from standards like IS 800 and AISC manuals.
Essential Reference Materials
The course draws upon authoritative texts and codes, including:
| Category | Reference Books & Codes |
|---|---|
| Indian Standard | IS 800:2007 (General Construction in Steel - Code of Practice) |
| Textbooks | Design of Steel Structures by N. Subramaniam; Ductile Design of Steel Structures by Bruneau, Uang, & Sabelli |
| Teaching Guides | INSDAG Teaching Material |
| International Guides | AISC Design Guide 4 & 5; AISC Seismic Design Manual; ECCS - Joints in Steel and Composite Structures |
In conclusion, "Design of Connections in Steel Structures" is more than just a course; it's a critical skill-building program for anyone involved in creating safe, efficient, and resilient steel structures. By bridging the gap between theoretical analysis and practical, code-compliant design, it empowers engineers and architects to master the connections that truly hold our built environment together.
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