CE 305: Steel Design - Spring 2022

Table of Contents

Basic Information

Class timings Monday 09:05-10:00, Tuesday and Thursday, 08:05-09:00
Class location AB 3/205
Online class Class link / Live Notes / Resource
Instructor Gaurav Srivastava (gauravs@iitgn.ac.in)
TA Vimal Panara (vimalp@iitgn.ac.in).

Course objectives, syllabus, books, pre-requisites

Objective

  • To learn the basics of analysis and design of steel structures.

After finishing this course, you will

  • know how to analyze structural steel components
  • know how to design structural steel members (members under tension, compression and bending)
  • understand the basic philosophy behind the limit state method of design of structures

Syllabus

Design of tension members; Design of beams; Design of compression members; Analysis of eccentrically loaded columns; Design of beam-columns; Design of connections (riveted, bolted and welded); Single and built-up sections.

Text Books

  • Design of Steel Structures by N. Subramanian.
  • Structural Steel Design by McCormac and Csernak.

Relevant codes

  • IS 800:2007 (main design code)
  • IS 875 (specification of design loads)
  • IS 808:1989, 1732:1989, 1173:1978 (dimensions of hot rolled sections)
  • IS 2062:2011 (specifications of hot rolled structural steel)

Codes can be downloaded free of charge from the BIS website: https://standardsbis.bsbedge.com/.

  • Please ensure that you have a copy of all of these codes BEFORE the first class.

Pre-requisites

  • CE 302 - Structural Analysis
  • Mechanics of Solids

Course Policies

Etiquette

  • Please be considerate about everyone's time.
  • In all emails pertaining to this course, please have "CE305" in the subject line.
    • (note that there is no space or hyphen or anything between CE and 305)

Cheating

Cheating cases (assignments/codes/exams/project) will be awarded an F grade and will be reported to academic office. It is expected that this will never happen and everyone will uphold the honor code.

Late submissions

All delays beyond the defined deadlines will attract reduction in marks as per the following curve. The reduction factor, \(R\) will be multiplied to the obtained marks. Mathematically, it is given by: \(R = \exp(-D^2)\), where \(D\) is the total delay in days (will be counted hourly, i.e. fractional days are possible). deadline-delay-reduction.png

Grading

Following will be the weightage of different components of assessment

Component Weightage
Homework assignments 25%
Spot quizzes 25%
Exam 25%
Project 25%

Modes of formal assessment

  • Assignments will involve detailed analysis and design questions.
  • Expect one assignment per week.
  • Spot quizzes will primarily be objective type, primarily based on concepts and codes. Expect one quiz per week.
  • Exam will primarily be subjective type. It may be in-class or take-home.

Emphasis on self-learning

It is important to develop the habit of self-learning. A number of reading assignments and self-exercises will be given during the course. These will not be formally graded and it will be expected that students will go through them on a regular basis on their own.

Project

The project will entail designing the roof truss of the IITGN's sports complex (Badminton Hall). Existing drawings will be made available. The challenge will be to come up with alternative possibilities.

Timeline

Project is to be done in groups of not more than 3. Following timeline must be adhered to for all submissions. (this timeline will be updated during the first week of classes)

Date Task Marks
Jan 21 Formation of groups. 10
Jan 28 Providing drawings of existing truss.  
Feb 12 Submission of preliminary report after design review. 20
Feb 24 Submission of final report. 20

Guidelines on the final report

This report should be organized as follows:

  1. Discussion of the existing design (critical review of existing design).
  2. Description of alternative proposal.
  3. Detailed analysis and design of alternative proposal.
  4. Highlighting improvements of the alternative proposal over existing design.
  5. Conclusions.
  6. References.

Calendar (tentative)

Lec No Date Topic Attachments
1 4 January, Tuesday Introduction to design. Concept of LRFD. Limit states.  
2 6 January, Thursday Analysis of members in tension - yielding of gross section, rupture of net section A1 (due 13 Jan)
3 10 January, Monday Analysis of members in tension - shear lag. V4.2
4 11 January, Tuesday Design of members in tension. Block shear. Method for design. V4.3 / V5.1
5 13 January, Thursday Design of members in tension. A2 (due 20 Jan) / V5.2
6 17 January, Monday Analysis of members under uniaxial compression - column curves. Quiz 1 / V6.1
7 18 January, Tuesday Analysis of members in uniaxial compression - design strength calculations. V6.2 / V6.3
8 20 January, Thursday Analysis of members in uniaxial compression - design strength calculations. A3 (due 27 Jan) / V6.4
9 24 January, Monday Design of compression members. Quiz 2
10 25 January, Tuesday Design of compression members.  
11 27 January, Thursday Analysis of members under flexure. A4 (due 3 Feb)
12 31 January, Monday Design of members under flexure. Quiz 3
13 1 February, Tuesday Design of members under flexure and other actions.  
14 3 February, Thursday Design of members under flexure and other actions. A5 (due 10 Feb)
15 7 February, Monday Bolted connections. Quiz 4
16 8 February, Tuesday Bolted connections.  
17 10 February, Thursday Bolted connections. A6 (due 17 Feb)
18 14 February, Monday Welded connections. Quiz 5
19 15 February, Tuesday Welded connections.  
20 17 February, Thursday Welded connections. A7 (due 25 Feb)
21 21 February, Monday Design of systems under combined actions. Quiz 6
22 22 February, Tuesday Design of systems under combined actions.  
23 24 February, Thursday Design of systems under combined actions.  
  26 February - 5 March Mid Semester Exam Week  
  5 March, 2-4 PM Mid Semester Exam (3/211)