Topic outline

  • General

    • Notice Board Forum
      Welcome to CE 415: Design of Steel Structures!! In this notice board, you will find all important information about quiz & assignments.


    • Course Teacher 172 DE1, DE2

      Saurav Barua, Course Teacher 172 DE1, DE2                                                                                                                              

      Saurav Barua (SB)
      Assistant Professor, Dept. of Civil Engineering,
      Contact No: +8801715334075,  Email: saurav.ce@diu.edu.bd

    • Google classroom codes

      Course teacher: SB
      Sec 172 DE1: o2cme2f,  Sec 172 DE2: w72ewfo. 


    • Announcement

      Class test 2 (both sections)
      Syllabus: Lecture 5 (block shear)
      date: 27.9.22 (Tuesday), respective class time

  • Introduction

    Course Title: Design of Steel Structures
    Course Code: CE 415
    Course Type: Theory course
    Credit hr— 3.0 Cr. hr /week
    Prerequisite—Completion of L-3/T-3 of Civil Engineering
    NB: Students need to attend in 60% classes to appear in the Final Examination.

    L    earning Outcomes:
    • Use of AISC Manual to find required sections & sectional properties
    • Difference between LRFD & ASD design 
    • Students will be able to learn the design principles of tension members considering three limit states: yielding, fracture & block shear
    • How to find the failure path which gives least area in case of staggered fasteners
    • How to find the strength of bolts in case of bearing type bolts
    • How to find the strength of weld & length of weld required
    • Understanding the phenomenon of buckling in slender columns
    • Design of compression member using AISC column design formula & trial method
    • Understanding the concept of compact/non-compact sections & the corresponding criteria
    • Finding the strength of flexural member considering compactness/non-compactness


    Lesson Plan: The following topics shall be covered in this course

    1. Week 1 : Introduction, Properties of Structural Steel, Design Philosophy
    2. Week 2-3: Design of Tension Members : Yielding, Fracture, Block Shear & CT- 1
    3. Week 4: Residual Stress in Steel
    4. Week 5-6 : Bolted connections & CT-2
    5. Week 6 : Review before mid quiz
    6. Week 7: Mid term quiz
    7. Week 8: Welded connections 
    8. Week 9-11: Design of Compression Member : Effective Length, Slenderness ratio, Buckling/Crushing, Local Buckling & CT-3
    9. Week 12-13: Design of Flexural Member : Compact section, Non-compact Section, Slender Section &    CT-4
    10. Week 14 : Review before final quiz

    Referred reading

    1. Steel Structures, Design and Behaviour, Fifth Edition, 2009. Authors: Salmon, Johnshon and Malhas.
    2. Manual for Steel Construction, 14th Edition, 2011. Author: American Institute of Steel Construction (AISC).
    3. Design of Steel Structures, 3rd Ed., 1991, Authors: Gaylord, Gaylord and Stallmeyer, Publisher: McGraw-Hill


    • Course Assessment Plan

      Criteria

      Marks

      Attendance

      7

      Class Test (3 out of 4)

      15

      Mid term

      25

      Presentation

      8

      Assignment

      5

      Final

      40

      Total

      100



    • SB- Class schedule Spring 2021

      http://

  • Text Book and AISC Manual

  • Topic 1: Introduction, Properties of Structural Steel, Design Philosophy

    Introduction
    • Basics of Steel design
    • Terminology related to steel design
     
    Objectives
    • Naming different components of steel structures
    • Describe details of steel joints, gusset plate
    • Distinguish Allowable strength design and Load resistance factor design
     
    Lesson Plan
    • ASD and LRFD design
    • Cold formed and hot rolled shape
    • Advantages and disadvantages of steel structure

     

     


  • Topic 2 : Yielding & Fracture

    Objectives
    • Identify tension member
    • Understand load resisting behavior of tension member
    • Understand different limit states
     
    Lesson Plan
    • Gross area, net area, effective net area 
    • staggered fasteners
    • yielding and fracture


     
     

  • Topic 3: Block Shear

    Objectives
    • Understand block shear 
    • Identify different block shear modes
    • Compare between different block shear modes
     
    Lesson Plan
    • Area in Shear plane and area in tension plane
    • shear yielding & shear rupture
    • tension rupture
    • check capacity based on all 3 limit states


      
      

  • Topic 4: Residual Stress

    Objectives
    • Understand causes and effects of residual stress on stress-strain behavior of steel
     
    Lesson Plan
    • Meaning of residual stress
    • Causes of residual stress
    • Calculation of stress-strain values considering the effect of residual stress





     


     

  • Topic 5: Bolts

    Objectives

    • Learn the different failure modes for bolted connections
    • Finding the strength of bolted connections
    Lesson Plan

    • Bolt designation & different parts
    • Possible modes of failure for bolted connections
    • Types of bolts
    • Limit States of Bearing type bolts - shear & bearing
    • Single shear plane & double shear plane


                                                            

     


  • Midterm Syllabus and Assessment Plan

    Midterm Syllabus
    • Properties of steel (introduction slide)
    • Tension Member - Yielding & Fracture, 
    • Tension Member - Block shear
    • Residual Stress
    • Bolts
    Midterm Assessment Plan

     Question

    Marks

    Theory (1 compulsory)

    5

    Math problem (4 out of a choice of 5)

    20

    Total

    25



    • Midterm Exam (Day batch) Quiz
      View Receive a grade

      Time: 1.5 hours
      Marks: 25
      1. Submit PDF files only as attachment
      2. Write your student ID on exam scripts

      There are essay type questions. Students may answer the essay type questions either through upload in BLC or upload in google classroom attaching the link at BLC. Total time limit is 1hr 30 minutes and exam will be available  at BLC. Students need to have accounts clearance to update grades in ERP system.

    • Midterm Exam (Evening batch) Quiz
      View Receive a grade

      Time: 1.5 hours
      Marks: 25
      1. Submit PDF files only as attachment
      2. Write your student ID on exam scripts

      There are essay type questions. Students may answer the essay type questions either through upload in BLC or upload in google classroom attaching the link at BLC. Total time limit is 1hr 30 minutes and exam will be available  at BLC. Students need to have accounts clearance to update grades in ERP system.


    • Midterm Makeup Exam Quiz
      View Receive a grade

    • Day batch, review class for midterm

      http://

      Evening batch, review class for midterm

      http://

  • Topic 6: Welds

    Objective

    • Learning about different types of weld & symbols used
    • Understanding the limit states governing welded connections
    Lesson Plan

    • Types of welds
    • Defects in welds
    • Symbols used to label welds
    • Limit states - shear, yield and fracture
    • Finding the length of welded connections
    • Eccentric loads



     
     

  • Topic 7 : Compression Member

    Objectives
    • Understand the phenomenon of buckling in slender columns
    • Learn to apply the AISC column design formula
     
    Lesson Plan
    • Types of columns, buckling, crushing
    • Effective length, slenderness ratio, value of 'k'
    • Finding column capacity using AISC formula




     

     

  • Topic 8: Strong & weak axis buckling

    Objectives
    • Understand laterally braced columns 
    • Differentiate between strong & weak axis
     
    Lesson Plan
    • A problem on laterally braced column where both strong and weak axis buckling need to be investigated.

  • Topic 9: Column Design

    Objectives

    • Learning how to find suitable section for a column using from AISC manual
     
    Lesson Plan
    • A design problem which demonstrates 3 trials to find the lightest W section that satisfies both gross area & radius of gyration requirements.

  • Topic 10: Local Buckling in Columns

    Objectives
    • Understand local buckling & its effects on column strength
     
    Lesson Plan
    • Definition of local buckling
    • Consequence of local buckling 
    • Stiffened & unstiffened elements
    • Effect of width to thickness ratio

  • Topic 11 : Flexural Member

     Objective

    • Understanding the concept of compactness/non-compactness
    • Applying appropriate design formula based on compactness of flexural member

    Lesson Plan

    • Review of plastic section modulus & elastic section modulus
    • Definitions of compact/non-compact/slender sections
    • Checking compactness using AISC manual criteria 
    • Using equations for finding strength of compact section & non compact section




     
     

  • Final Assessment Plan

    Final term Syllabus
    • Welds
    • Compression Member- Finding Capacity
    • Compression Member- Laterally braced column
    • Compression Member- Design problem
    • Compression Member - Local Buckling
    • Flexural Member
    Final term Assessment Plan

     Required to answer

    Marks

    4 out of a choice of 5 questions

    		                                    4 x10 = 40
    **Each question will have 2 mark theory + 8 mark math problem

    • Quiz 1

      Syllabus- Lecture 1 to Lecture 3

      The Quiz 1 has 7 sections, marks distribution is given below:

      1.      Quiz 1 (Part A- Quiz), marks - 05

      2.      Quiz 1 (Part B- Assignment), marks - 02

      3.      Quiz 1 (Part C- Forum discussion), marks – 02

      4.      Quiz 1 (Part D- Questionnaire), marks – 02

      5.      Quiz 1 (Part E- Interactive), marks – 02

      6.      Quiz 1 (Part F- Edpuzzle), marks – 01

      7.      Quiz 1 (Part G- feedback), marks -01

      Total marks – 15

      Deadline- 10.6.21


    • Quiz 2

      Syllabus- Lecture 4 to Lecture 6

      The Quiz 2 has 7 sections, marks distribution is given below:

      1.      Quiz 2 (Part A- Quiz), marks - 05

      2.      Quiz 2 (Part B- Assignment), marks - 02

      3.      Quiz 2 (Part C- Forum discussion), marks – 02

      4.      Quiz 2 (Part D- Questionnaire), marks – 02

      5.      Quiz 2 (Part E- Interactive), marks – 02

      6.      Quiz 2 (Part F- Edpuzzle), marks – 01

      7.      Quiz 2 (Part G- feedback), marks -01

      Total marks – 15

      Deadline- 30.6.21

    • Midterm Assessment

      There are separate sections for day batch and evening batch. Each batch have one regular submission and one late submission option. Try to submit your answer by scanning and uploading via cam scanner pdf. Try to upload your answer script in regular submission.  Only use late submission option, if you got some network problems or server problems. Submission time and type in late submission will be monitored carefully. 
      Students should collect exam clearance before sit for the assessment.

      Day batch
      Date: 4.7.21  time: 1:30-4:00PM    duration: 1:30 hr
       
      Evening batch
      Date: 8.7.21  time: 7:15-9:45PM   duration: 1:30 hr

    • Class Test 3

      Total marks 15

      Time 50 minutes

      Syllabus- Lecture 14 (Compression member) and Lecture 16 (Flexural member)

      The Class test will not be available until Tuesday, 10 August 2021, 3:00 PM

      This Class test will close on Tuesday, 10 August 2021, 10:00 PM.

      Time limit: 50 mins

      There are 5 sections: Quiz 3 [10 marks], Assignment 3 [2 marks], Forum [1 mark], interactive [1 mark] and Questionnaire [1 mark] 

      N.B. : There is a section for late submission, if you fail to submit within time limit.



    • Final Exam (Summer 2021)

      All students are requested to collect exam clearance before sit for the examination. Students without clearance will not allow to participate in the exam. Therefore, students are requested to clear dues and collect exam clearance from Departmental office before exam date.

      Day batch Exam: 24.8.21 (1:30-5:00 PM), duration: 2 hr

      Evening batch Exam: 28.8.21 (7:00-10:30 PM), duration: 2 hr

      All students must try to submit within the given link of BLC. There are separate section for late submission is given in the BLC also. Students who will fail to submit their script within the time period for some valid reasons like internet/ network disruption can only submit there. 

    • Class Test 1

      CE 415

      Syllabus: Lecture 2 and Lecture 3

      Start date: 3/10/21

      Deadline: 10/10/21

       

      Class test 1 [Total marks 15]

      Section 1: Quiz 1 [Marks 5 x 2 = 10]

      Section 2: Assignment 1 [Marks 2]

      Section 3: H5P 1 [Marks 1]

      Section 4: Forum 1 [Marks 1]

      Section 5: Questionnaire 1 [Marks 1]


      Quiz 1

      https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054770

      Assignment 1

      https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054771

      H5P 1

      https://elearn.daffodilvarsity.edu.bd/mod/hvp/view.php?id=1054772

      Forum 1

      https://elearn.daffodilvarsity.edu.bd/mod/forum/view.php?id=1054773

      Questionnaire 1

      https://elearn.daffodilvarsity.edu.bd/mod/questionnaire/view.php?id=1054774

      Late submission

      https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054775


    • Presentation

      Presentation

      Prepare Power point presentation on anyone of the following topics. Also prepare a presentation video on the topic. This is an individual effort, i.e. every student have to prepare his own presentation and video presentation. You have to upload power point slide and presentation video in your google drive and provide the link in the presentation assignment as a link in the Online text. Please see the YouTube videos have provided you, if you need any assistance regarding the presentation submission.  
      Your power point slide should not be more than 4 slides. (Maximum 4 slides)
      Your video presentation should not be more than 5 minutes. (Maximum 5 minutes)
      Deadline:  15.11.21
      [Marks distribution— Power point: Structure: 2, completeness: 2. Video presentation: Clarity, delivery, formality: 1, completeness: 1. Uniqueness of topic: 2. 2+2+1+1+2 = 8 marks]
      N.B.: There is some bonus point for choosing unique topic and penalty marks deduction for plagiarism from other students.
      Some sample topics are:
      1. Shear lag
      2. ASD design method
      3. LRFD design method
      4. Steel Tension member
      5. Steel short column
      6. Steel Beam
      7. Maintenance of Steel structure
      8. Construction methods of steel frame
      9.  Compact and non-compact section
      10. Slender column
      11. Flexural member
      12. width-thickness ratio of steel member
      13. Stiffened and non-stiffened member
      14. Fire protection of steel structure
      15. Advantages and disadvantages of steel structures
      And etc.
       It can be beyond the topics I have covered in my lectures.


    • Class test 2

      CE 415

      Class test 2

      Syllabus Lecture 5 and Lecture 6.

      Deadline: October 31, 2021

      Quiz 2 [Marks 10]

      https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054777

      Assignment 2 [Marks 2]

      https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054778

      Forum 2 [Marks 1]

      https://elearn.daffodilvarsity.edu.bd/mod/forum/view.php?id=1054779

      H5P 2 [Marks 1]

      https://elearn.daffodilvarsity.edu.bd/mod/hvp/view.php?id=1054780

      Questionnaire 2 [Marks 1]

      https://elearn.daffodilvarsity.edu.bd/mod/questionnaire/view.php?id=1054781

      Late submission

      Upload your answers if you fail to submit within time limit or problems due to internet.

      https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054782


    • Midterm Exam

      CE 415 Midterm

      Syllabus: Lecture 1 to Lecture 6

      Date and Time of the Exam: 6:00-8:30PM, 15.11.21

      Time: 1 hour 30 minutes 

      Marks: 25      

      Midterm:

      https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054783

      Late Submission: (In case internet problem)

      https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054784


      • Midterm Quiz
        Receive a grade

        Daffodil International University

        Department of Civil Engineering

        Final Examination, Year-Semester: 4th Year -1st Semester (Fall 2021)

                  Program: B.Sc. Engineering (Civil)

         

        Course Code:  CE 415                                                Course Title:   Design of Steel Structure

        Credit hour: 3 credits                                          Time: 1 hour 30 minutes                    Total Marks: 25

        Name & Designation of the Examiner: Saurav Barua, Assistant Professor

        Date and Time of the Exam: 6:00-8:30PM, 15.11.21

        Note: Answer all of the following questions. Assume any reasonable missing data.


      • Late submission Quiz

        Late Submission: (In case internet problem)


    • Class test 3

      CE 415

      Class test 3

      Syllabus: Lecture 14

      Time: 1:30 hour

      Deadline: 13.12.21

      Exam link:

      https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054785

      Late submission link:

       https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054786


    • Presentation Fall 2022

      Presentation

      Prepare Power point presentation on anyone of the following topics. Also prepare a presentation video on the topic. This is an individual effort, i.e. every student have to prepare his own presentation and video presentation. You have to upload power point slide and presentation video in your google drive and provide the link in the presentation assignment as a link in the Online text. Please see the YouTube videos have provided you, if you need any assistance regarding the presentation submission.  
      Your power point slide should not be more than 4 slides. (Maximum 4 slides)
      Your video presentation should not be more than 5 minutes. (Maximum 5 minutes)
      Deadline:  30.10.22
      [Marks distribution— Power point: Structure: 2, completeness: 2. Video presentation: Clarity, delivery, formality: 1, completeness: 1. Uniqueness of topic: 2. 2+2+1+1+2 = 8 marks]
      N.B.: There is some bonus point for choosing unique topic and penalty marks deduction for plagiarism from other students.
      Some sample topics are:
      1. Shear lag
      2. ASD design method
      3. LRFD design method
      4. Steel Tension member
      5. Steel short column
      6. Steel Beam
      7. Maintenance of Steel structure
      8. Construction methods of steel frame
      9.  Compact and non-compact section
      10. Slender column
      11. Flexural member
      12. width-thickness ratio of steel member
      13. Stiffened and non-stiffened member
      14. Fire protection of steel structure
      15. Advantages and disadvantages of steel structures
      And etc.
       It can be beyond the topics I have covered in my lectures.