CE 302: Structural Analysis - Fall 2023

Table of Contents

Basic Information

Class timings Tuesday 11:30-12:50, Thursday 8:30-9:50
Class location AB 7/101
Tutorial timings Monday 10:00-11:20
Tutorial location AB 7/101
Instructor Gaurav Srivastava (gauravs@iitgn.ac.in)
TAs Bhuvesh Jaiswal (jaiswal.bhuvesh@iitgn.ac.in)
  Ashmita Dey (ashmita.dey@iitgn.ac.in)

Course objectives, syllabus, books, video lectures, pre-requisites

Objectives

  • To learn fundamentals of structural analysis.
  • To develop simple computer programs to perform structural analysis.

After finishing this course, you will

  • know how to analyse simple structures by hand
  • know how to use computer programming to analyze large structural systems
  • understand linear analysis of structures

Syllabus

  • Review of some concepts from Mechanics of Solids.
  • Degrees of indeterminacy (static and kinematic).
  • Types and analysis of trusses, cables, arches, beams, columns and frames.
  • Specific methods to be covered: moment area theorem; conjugate beam method; principle of virtual work; energy method; Castigliano’s theorems; unit-load and unit-displacement theorems; reciprocal theorems; Betti's and Maxwell's theorem; method of consistent deformations; slope-deflection method; displacement based methods; moment distribution method; column analogy method
  • Influence lines; Muller-Breslau's principle
  • Matrix method of analysis (if time permits)

Text Book

  • Structural Analysis 5th edition - Devdas Menon, Narosa Publishing House Pvt. Ltd.

Reference Books

  • Structural Analysis - R.C. Hibbeler, Prentice Hall.
  • Structural Analysis - Aslam Kassimali, Cengage Learning.
  • Matrix Structural Analysis - W. McGuire, R.H. Gallagher, R.D. Ziemian (available here: http://www.mastan2.com/textbook.html).

Software

  • Simple computer codes for analysis will be developed in Python.
  • SAP2000 will be used for more complicated analyses.
  • Another useful software tool is MASTAN2 (http://www.mastan2.com/)

Video lectures

  • Recorded lectures covering most of the syllabus are available here.
  • Notes used for the video lectures can be downloaded from this link.
  • You may use these to revise/learn in advance certain topics.

Pre-requisites

  • Curiosity about how structural systems (buildings, bridges, dams, etc.) are designed – analysis is essential for design.
  • Good background of solid mechanics and any programming language.

Course Policies

Etiquette

  • Please be considerate about everyone's time.
  • In all emails pertaining to this course, please have "CE302" in the subject line.
    • (note that there is no space or hyphen or anything between CE and 302)

Cheating

Cheating (in assignments/quizzes/exams) is unacceptable. 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 30%
Spot quizzes 20%
Class participation 10%
Midsem exam 20%
Endsem exam 20%

Extra credit

Earn up to 20% extra credit by creating problem-solving videos.

  • Choose a problem (to be shown to the instructor for confirmation)
  • Create a detailed solution.
  • Create a video of 2-3 minutes explaining the detailed solution.
  • Quality of the video should be good so that it can be shared online (e.g. on youtube).
  • This activity can be taken up in groups of up to 2 persons.
  • Each video can earn up to 2% extra credit subject to the overall 20% limit (both group members to get the same credit).
  • Each video will be rated by rest of the class. Grading of the video will include these ratings.
  • Last date to submit videos: 25 November 2023

Modes of formal assessment

  • Assignments will involve detailed analysis and hands-on 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.

Calendar (tentative)

[L1] Aug 03, Thu

  • Introduction. Discussion on mechanics of solids.

[L2] Aug 07, Mon

  • Idealization of structural members. Support reactions. Stability and determinacy.

(T1) Aug 08, Tue

[L3] Aug 10, Thu

  • Principle of virtual work for computing support reactions.

(T2) Aug 14, Mon

Aug 15, Tue – no class

  • Independence Day.

[L4] Aug 17, Thu

  • Analysis of trusses.

(T3) Aug 21, Mon

[L5] Aug 22, Tue

  • Internal forces in beams. Shear force and bending moment diagrams.

[L6] Aug 24, Thu

  • Deflection of beams by direct integration. Singularity functions.

(T4) Aug 28, Mon

[L7] Aug 29, Tue

  • Moment area theorems.

[L8] Aug 31, Thu

  • Moment area theorems.

Sep 02 - Sep 06 – Examination 1 duration

  • Sep 06 from 16:30 - 18:00 in AB 3/215.
  • Exam 1 solutions
  • Highest: 74, Average: 32, Median: 30, Range: 71

Sep 07, Thu – no class

  • Janmashtami (Vaishnavi)

(T5) Sep 11, Mon

[L9] Sep 12, Tue

  • Conjugate beam method.

[L10] Sep 14, Thu

  • Energy and complimentary energy.
  • Castigliano's theorems. Energy methods.
  • Quiz 1.

(T6) Sep 18, Mon

[L11] Sep 19, Tue

  • Use of energy methods for structural analysis.

[L12] Sep 21, Thu

  • Principle of virtual work. Unit load and displacement methods.
  • Unit load and displacement methods.

(T7) Sep 25, Mon

[L13] Sep 26, Tue

  • Maxwell's and Betti's theorems.
  • Theorem of three moments.

Sep 28, Thu – no class

  • Milad-un-Nabi (Id-e-Milad)

Oct 02, Mon – no class

[L14] Oct 03, Tue

  • Theorem of three moments.

[L15] Oct 05, Thu

  • Generalization of force-based methods. Flexibility matrix.

(T8) Oct 09, Mon

[L16] Oct 10, Tue

  • Slope-deflection equations.

Oct 11 - Oct 15 – Examination 2 duration

(T9) Oct 16, Mon

[L17] Oct 17, Tue

  • Slope-deflection equations.

[L18] Oct 19, Thu

  • Slope-deflection equations.

Oct 21 - October 29 – Mid semester recess

(T10) Oct 30, Mon

[L19] Oct 31, Tue

  • Moment distribution method.

[L20] Nov 02, Thu

  • Moment distribution method.

(T11) Nov 06, Mon

[L21] Nov 07, Tue

  • Moment distribution method.

[L22] Nov 09, Thu

  • Moment distribution method.

(T12) Nov 13, Mon

  • Session on SAP2000 conducted on Nov 09.

[L23] Nov 14, Tue

  • Influence line diagrams.

[L24] Nov 16, Thu

  • Session on SAP2000.

(T13) Nov 20, Mon

[L25] Nov 21, Tue

  • Muller-Breslau's principle.

[L26] Nov 23, Thu

  • Cables and arches.

Nov 25 - Nov 30 – Examination 3 duration

  • Nov 30 from 14:00 - 15:30 in AB 3/216.

Final exam