Section outline
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Welcome to CE 415: Design of Steel Structures!! In this notice board, you will find all important information about quiz & assignments.
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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.
Learning 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
- Week 1 : Introduction, Properties of Structural Steel, Design Philosophy
- Week 2-3: Design of Tension Members : Yielding, Fracture, Block Shear & CT- 1
- Week 4: Residual Stress in Steel
- Week 5-6 : Bolted connections & CT-2
- Week 6 : Review before mid quiz
- Week 7: Mid term quiz
- Week 8: Welded connections
- Week 9-11: Design of Compression Member : Effective Length, Slenderness ratio, Buckling/Crushing, Local Buckling & CT-3
- Week 12-13: Design of Flexural Member : Compact section, Non-compact Section, Slender Section & CT-4
- Week 14 : Review before final quiz
Referred reading
- Steel Structures, Design and Behaviour, Fifth Edition, 2009. Authors: Salmon, Johnshon and Malhas.
- Manual for Steel Construction, 14th Edition, 2011. Author: American Institute of Steel Construction (AISC).
- Design of Steel Structures, 3rd Ed., 1991, Authors: Gaylord, Gaylord and Stallmeyer, Publisher: McGraw-Hill
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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
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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
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Tension member
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Fall 2021
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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
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Block shear
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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
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Residual Stress
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Residual stress
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Objectives
- Learn the different failure modes for bolted connections
- Finding the strength of bolted connections
- 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
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Bolts
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Bolts (Contd.)
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Time: 1.5 hours
Marks: 25
1. Submit PDF files only as attachment
2. Write your student ID on exam scriptsThere 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.
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Time: 1.5 hours
Marks: 25
1. Submit PDF files only as attachment
2. Write your student ID on exam scriptsThere 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.
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Objective
- Learning about different types of weld & symbols used
- Understanding the limit states governing welded connections
- 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
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Welding
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Welding (Contd.)
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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
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Compression member (Crushing)
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Compression member (buckling)
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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.
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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.
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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
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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
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Steel beam W section
1 marks will be added with assignment and 1 attendance extra
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Flexural member (Contd.)
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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
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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
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Only submit screenshots or attachments of all the above 7 section answers, if the student submit after 10.6.21.
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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
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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 -
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.
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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.
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Day batch (Summer 2021)
Students must have exam clearance to sit for the examination.
Please answer all of the following questions. Assume any reasonable missing data.
Attempts allowed: 1
The quiz will not be available until Tuesday, 24 August 2021, 1:30 PM
This quiz will close on Tuesday, 24 August 2021, 5:00 PM.
Time limit: 2 hours
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Answer all of the following questions.Assume any reasonable missing data.
Students must have exam clearance to sit for the examination.
Attempts allowed: 1
The quiz will not be available until Saturday, 28 August 2021, 7:00 PM
This quiz will close on Saturday, 28 August 2021, 10:30 PM.
Time limit: 2 hours
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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
https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054775
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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. -
CE 415
Class test 2
Syllabus Lecture 5 and Lecture 6.
Deadline: October 31, 2021
https://elearn.daffodilvarsity.edu.bd/mod/quiz/view.php?id=1054777
https://elearn.daffodilvarsity.edu.bd/mod/assign/view.php?id=1054778
https://elearn.daffodilvarsity.edu.bd/mod/forum/view.php?id=1054779
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
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
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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
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
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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.
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CE 415
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
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Syllabus: Lecture 7 and Lecture 10
Deadline: November 5, 2022
Marks: 15 [5 marks in quiz +10 marks in assignment segment]
Write only answer in the quiz segments and upload/submit calculations in assignment segment.
Quiz (result only) [5 marks]
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Upload your calculations in this segment. Questions are available in quiz/ Class test 3 segment.
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Assignment [5 marks]
Deadline 6 December
What are the challenges as a site engineer for steel construction. Mention at least 5 issues. Write within 200 words. Avoid plagiarism.
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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.