Notes From Class
Week 1: August 31. September 2 and 4, 2020.
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Topic (2020-08-31): Welcome to ENCE 353:
(zoom video).
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Topic (2020-09-02): Overview of Structural Analysis and Design (Part 1):
( pdf )
(zoom video)
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Topic (2020-09-04): Overview of Structural Analysis and Design (Part 2):
( pdf )
(zoom video)
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Millennium Tower (San Francisco):
See Wikipedia writeup on Millennium Tower,
a 58 story building that is sinking in San Francisco.
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Jakarta is home to 10 million people and the capital city of Indonesia.
It is also the fastest sinking city in the World (sinking 10 inches per year in places).
Google: Jakarta sinking
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YouTube: Simple demonstration of
liquefaction .
Week 2: September 9 and 11, 2020.
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Topic (2020-09-09): Introduction to Structural Analysis (Part 1):
( pdf )
(zoom video)
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Topic (2020-09-11): Introduction to Structural Analysis (Part 2):
( pdf )
(zoom video)
Week 3: September 14, 16, and 18, 2020.
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Topic (2020-09-14): Introduction to Structural Analysis (Part 3):
( pdf )
( zoom video )
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Click here to download
Introduction to Structural Analysis, Parts 1-2-3 (a few minor typos have been fixed).
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Topic (2020-09-16): Statically Determinate Structures (Part 1) (Trusses and Planar Structures):
( pdf )
( zoom video )
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Topic (2020-09-18): Statically Determinate Structures (Part 2) (Beams and Frames):
( pdf )
( zoom video )
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Homework 1:
Homework 1
Please see the class web page for instructions on submission of homework.
Due: September 25.
Week 4: September 21, 23, and 25, 2020.
Week 5: September 28, 30, and October 2, 2020.
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Homework 2:
Homework 2
Please see the class web page for instructions on submission of homework.
Due: October 2.
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Topic (2020-09-28):
Analysis of Beam Structures (Part 1) (Connection to Mechanics)
( pdf )
( zoom video )
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Topic (2020-09-30):
Analysis of Beam Structures (Part 2) (Shear and Bending Moment)
( pdf )
( zoom video )
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Topic (2020-10-02):
Analysis of Beam Structures (Part 3) (Examples)
( pdf )
( zoom video )
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Midterm I from Fall Semester, 2016.
Midterm I from Fall Semester, 2017.
Midterm I from Fall Semester, 2018.
Midterm I from Fall Semester, 2019.
Midterm I from Spring Semester, 2020.
Week 6: October 5, 7 and 9, 2020.
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Topic (2020-10-05): Review of Midterm I, Fall Semester 2018.
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Whiteboard Pics (from 2018-10-15):
Pic01 ,
Pic02 and
Pic03 .
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Topic (2020-10-05): Review of Midterm I, Fall Semester 2019.
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Whiteboard Pics (from 2020-03-02):
Pic01 ,
Pic02 ,
Pic03 and
Pic04 .
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Topic (2020-10-05): Review of Midterm I, Spring Semester 2020.
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Whiteboard Pics (from 2020-03-09):
Pic01 and
Pic02 .
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Midterm 1: October 7, 9 am.
Here is the midterm exam .
NOTE: You have 12 hrs to complete and return the exam.
Please make sure your name and e-mail are clearly written on the first page.
Open book and open notes. University rules on academic integrity apply.
Three questions covering computation of indeterminacy, support reactions,
shear and bending moment diagrams, tensile and compressive element-level forces.
Instructions for Submitting Midterm I: See details on ENCE353 home page.
NOTE ON EXAM DATE: I am proposing October 7 for Midterm I, but I realize there
might be conflicts with religious commitments. So please let me know.
This semester we also need to navigate around a schedule of computer maintenance shutdowns.
If October 7 will not work, am happy to move to October 14.
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Topic (2020-10-09): Solutions to Midterm I (pdf) (I will post in a few days).
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Solutions to
Homework 1 .
Week 7: October 12, 14 and 16, 2020.
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Homework 3:
Homework 3
Please see the class web page for instructions on submission of homework.
Due: October 23.
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Sample Midterm II Exams:
Midterm II from Fall Semester, 2016.
Midterm II from Fall Semester, 2017.
Midterm II from Fall Semester, 2018.
Midterm II from Fall Semester, 2019.
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Topic (2020-10-12): Qualitative Sketching of Displacements
(pdf)
(zoom video).
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Topic (2020-10-14): Principle of Superposition
( pdf )
(zoom video).
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Topic (2020-10-16): Superposition (Examples)
(pdf)
(zoom video).
Week 8: October 19, 21 and 23, 2020.
Change of topic: for the next two weeks we will cover analysis of arch structures followed by analysis of cable structures.
See, in particular, the notes and video on parabolic arches -- definitely the coolest part of this course.
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Topic (2020-10-19): Analysis of Arch Structures (Introduction)
(pdf)
(zoom video).
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NY Times Article: Here's an
article (and video)
on collapse of an Arch Bridge in Taiwan.
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Topic (2020-10-21): Analysis of Arch Structures (Circular and Parabolic Arches)
(pdf)
(zoom video).
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Topic (2020-10-23): Solution to Arch Problems from Recent (2017 and 2020) Exams
(pdf) (zoom video)
Week 9: October 26, 28 and 30, 2020.
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Topic (2020-10-26): Analysis of Cable Structures (Ignore Self-Weight of Cable)
(pdf)
(zoom video).
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Topic (2020-10-28):
Analysis of Cable Structures (Include Self-Weight of Cable)
(pdf)
(zoom video).
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Topic (2020-10-30): Solution to Cable Problem, Final Exam, 2018
(pdf)
(zoom video).
Week 10: November 2, 4 and 6, 2020.
Homework 4:
Homework 4
Please see the class web page for instructions on submission of homework.
Due: November 11.
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Topic (2020-11-02): Elastic Curve for Beam Deflection
(pdf)
(zoom video).
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Topic (2020-11-04): Integration of Beam Differential Equations (pdf)
(zoom video).
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Topic (2020-11-06): Moment Area Method (Introduction)
(pdf)
(zoom video).
Week 11: November 9, 11 and 13, 2020.
Week 12: November 16, 18 and 20, 2020.
Week 13: November 23 and 25, 2020.
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MIDTERM 2: November 23, 9 am.
Here is the Midterm 2 exam.
NOTE: There was a small typo in question 2c. It should read: y(x) = -P/6EI (...).
NOTE: You have 12 hrs to complete and return the exam.
Please make sure your name and e-mail are clearly written on the first page.
Open book and open notes. University rules on academic integrity apply.
Three questions covering: (1) computation of displacements via integration of
beam differential equations and/or moment area, and (2) arches and cables.
Virtual work will not be covered.
Instructions for Submitting Midterm II: See details on ENCE353 home page.
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No class on November 25.
If possible, spend the day travelling to your family.
Happy Thanksgiving!
Week 14: November 30, December 2 and 4, 2020.
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Homework 5:
Homework 5
Please see the class web page for instructions on submission of homework.
Due: December 9 (no extensions).
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Topic (2020-11-30): Method of Virtual Forces (Truss Examples)
(pdf)
(zoom video).
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Topic (2020-12-02): Force and Displacement Methods
(pdf)
(zoom video).
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Topic (2020-12-04): Solutions to Midterm II Exam
(pdf)
(zoom video)
Week 15: December 7, 9 and 11, 2020.
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Topic (2020-12-07): Flexibility Method and Matrices
(pdf)
(zoom video).
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Topic (2020-12-09): Flexibility Method and Matrices (Solved Problems) (pdf) (zoom video)
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Topic (2020-12-11):
Solutions to Final Exam, Spring Semester, 2020
(pdf) (zoom video).
Note -- See this handout for solutions to Homework 5.
Week 16: December 14, 2020.
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Topic (2020-12-14): Review of Recent Final Exams and Solutions
Final Exams:
2016 (pdf),
2017 (pdf),
2018 (pdf)
(zoom video)
and 2019
(pdf)
(zoom video).
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Please fill out the Maryland Course Evaluation -- believe it or not, over time
we do try to improve the content and way in which courses are taught.
Looking ahead to next semester, this class will be online again. Am thinking of moving
office hours (11 am -12 pm this semester) to a new time spot and would welcome suggestions.
Our "regular class time" is 9-10 am, so that's a possibility?
Would 6-7 pm work better for most people?
Final Exam
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December 19, 9 am.
Here is the final exam. Good luck!
NOTE: You have 12 hrs to complete and return the exam.
Please make sure your name is clearly written on the first page.
Cross out the two questions that you do not want marked.
Open book and open notes. University rules on academic integrity apply.
Six questions: Question 1 is compulsory. Do three of the remaining five questions.
Topics include: Moment area, virtual forces, virtual displacements, force method,
analysis of cables, flexibility matrices.
Submitting the Final Exam: See details on ENCE353 home page.
Last Modified: September 23, 2020,
Copyright © 2020, Department of Civil and Environmental Engineering, University of Maryland.