Section # 0847 MWF 2nd Period, Lab Thursday 3-6 p.m.
SPRING 2001 - C. O. HAYS (Room
419 Weil, coh@ce.ufl.edu)
Syllabus
Catalog Description - CES 3102
- Mechanics of Engineering Structures
Credits 4; Coreq : EGM 3520.
Stress and deformation analysis of framed structures. Influence lines,
criteria for critical loading, moment area, Virtual work, slope deflection,
and consistent deformations.
Goals: Train the student in the analysis of statically determinatestructures subjected to fixed and moveable loads. Train the student in the use of classical methods of deflection computation, and to visualize the relationships between forces and deformations in structures. Train the student to solve for the redundant reactions of one and two degree statically indeterminate structures. Introduce the student to the Slope
Deflection Method as an introduction to the Stiffness Method of Structural Analysis. Train the student to draw shear and moment diagrams using several methods.
Objectives: The student will be able to determine the reactions and internal forces in a statically determinate structures such as beams, frames, trusses and arches due to the application of static forces and assess the effect of the placement of the loads on the structure using influence lines. The student will be able to draw freebody diagram of the individual members of simple structures and demonstrate the equilibrium of the members and the joints connecting the members. The student will not only learn how to calculate displacements of simple structures; but will learn how to relate the applied forces, their corresponding deformations, and the final displaced shape of simple structures in both an intuitive and mathematical manner. The student will be able to solve simple indeterminate structures and demonstrate the equilibrium of the members and joints. The student will be able to solve simple continuous structures using the Slope-Deflection method and understand the relations between loads, member end-moments and member end-rotations. The student will be able to draw shear and moment diagrams for the members of both simple and continuous structures.
Outcomes: The student will be able to apply basic math, science and engineering principles to solve structural engineering problems. The student will be able to identify, formulate and solve statically determinate and simple statically indeterminate beams and frames using several basic methods. The student will be prepared to learn how to use modern engineering tools to solve more complicated structures in a subsequent course.
YOU MUST HAVE PASSED EGM 3500 -STATICS WITH a C or BETTER. YOU MUST HAVE EITHER PASSED EGM 3520-STRENGTH WITH a C or BETTER OR YOU MUST BE REGISTERED FOR THAT COURSE CONCURRENTLY WITH CES 3102. IF YOU DROP EGM 3520, YOU MUST DROP CES3102.
Textbook: Structural Analysis, R.C.Hibbler, Fourth Edition, plus instructor notes.
STUDENT INVOLMENT/ SOME PRELIINARY COMMENTS
The material presented in this first course in structures is surprisingly similar to the material in your Engineering Statics course. However, there are all so some major differences in emphasis and the degree of mastery required. Thus students are often lulled into a false sense of security in the first few weeks when we review the basics and then rudely disappointed when the applications become more challenging. It should be apparent to even the novice that a building or bridge is much more complex than a single rigid body. The laws of mechanics that are typically taught on single rigid bodies in your statics course apply to the larger and more complex systems of bodies; but the applications of these laws becomes more challenging for real world structures. Thus students who want to fully master the applications of statics to large and complex systems need to become actively involved in the learning process and be challenged by applying the material to progressively more complex and interesting structures. The class procedures were developed to keep the student continuously involved and thus always building on the previously learned concepts and applications.
CLASS PROCEDURES
Typical Classes-About half of the classes will have a 50-minute lecture. The other half will have either a 10-minute quiz or a 25-minute work session. there will be no regular pattern of the sequencing of the lectures, quizzes, and work sessions. The mixing of the lectures with the works sessions is done to require that the student do some preparatory work before coming to class and maximize the benefits of the class time. The 10-minute quiz may be given at the beginning or the end of the hour. If given at the beginning of the hour it will be a very easy quiz on the reading material assigned for that day. If given at the end of the hour, it will be over the material discussed that day and be moderately difficult. The 10-minute quiz will be given closed book and closed notes. All other work, exams included will be open book and open notes. This means that approximately every 4th class you will be given a ten-minute closed book quiz on the material you were supposed to have read for that class period (a pop quiz if you like).
The 25-minute work session will involve breaking up the students into Groups of 3-4 students and working on a more difficult problem on the day’s material. These sessions will all be given at the end of the class.
Weekly Lab - Each week problems will be assigned that will be due at the end of the lab section. Assignments will be such that the three-hour lab session will not generally be sufficient to solve the problems. These assignments will be done and turned in individually but students may work with their group or others and the instructor and a lab assistant will be available to answer questions. Students may work together; however each student must turn in their own work. Copying will not be tolerated.
Grade Evaluation
Weekly Labs - 12 %
10 Minute Quizzes - 10%
Class Work Sessions 6%
3 Quizzes - 54 %
Final - 18 %
CLASS/LAB SCHEDULE
Date Topics Text Assignment/ LESSON #
1-08 Introduction & Loads
Chapt 1/ I
1-10 Equilibrium & Supports
& Static Indeterminacy 2.1-2.4/ II
1-11 (In place of lab this week,
students will do a take-home review
quiz on basic statics due at beginning of class 1-12)
1-12 Loads & Reaction &
Calculations & SI Units 2.5 / III
------------------------------------------------------------------------
1-15 Martin Luther King's Birthday
1/17 More Examples/Shear and
Moment at a Point 4.1/IV
1/18 LAB I - Reactions
1/20 "CUTTING SECTIONS NEAR
THINGS" / More Reactions 4.1/V
------------------------------------------------------------------------
1-22 Shear and Moment Equations
Using FBD 4.2/VI
1-24 Integration & Area
Principles 4.3/VII
1-25 LAB II - Reactions, Shear
and Moment Equations
1-26 Statically Determinate
Beams /Inflection Points 4.3/VIII
------------------------------------------------------------------------
1-29 Statically Indeterminate
Beams IX
1-31 Frames/Force Transformations
4.4/X
2-01 LAB III-Shear and Moment
Diagrams
2-02 Examples 4.4/XI
------------------------------------------------------------------------
2-05 Trusses - Introduction/Method
of Joints 3.1-3.4/XII
2-07 Method of Sections 3.5/
XIII
2-08 Exam # 1
2-09 Compound Trusses/Review
3.6/XIII
------------------------------------------------------------------------
2-12 Stability and Static Indeterminacy
& Instant Center XIV
2-14 Stability and Determinacy
Examples XIV
2-15 LAB IV Trusses and Stability
2-17 Influence Lines !!!!!!!
6.1/ XV
------------------------------------------------------------------------
2-19 Examples 6.1/ XVI
2-21 Properties of Influence
Lines 6.2/XVII
2-22 LAB V Influence Lines
2-23 Muller Breslau Principle
6.3/XVIII
------------------------------------------------------------------------
2-26 Influence Lines for Trusses
6.5/XIX
2-28 More on Moving Loads 6.6-6.8/XX
3-01 Exam# 2 Wednesday Night
3/3
3-02 Deformations/Displacements
8.1-8.3/XXII
------------------------------------------------------------------------
3-5 through 3-09 SPRING BREAK
- DRIVE CAREFULLY
------------------------------------------------------------------------
3-12 Moment Area Theorems 8.4/XXIII
3-14 Moment Diagrams by Superposition
8.4/XXIV
3-15 Lab VI Beam Deflections
3-16 Locating Tangent Lines
8.4/XXV
------------------------------------------------------------------------
3-19 Maximum Deflections XXVI
3-21 Introduction to Frame Deflections
XXVII
3-22 Lab VII Beam Deflections
3-23 Energy Theorems/Virtual
Work 8.6-8.8/XXVIII
------------------------------------------------------------------------
3-26 Virtual Work For Truss
Deflections 8.9/XXIX
3-28 Virtual Work For Beam Deflections
8.10/XXX
3-29 LAB VIII Virtual Work
3-30 Virtual Work For Frame
Deflections 8.10/XXX
------------------------------------------------------------------------
4-2 One Degree S.I. Structures
Chapter 9/XXXI
4-4 Examples XXXI
4-5 Exam # 3
4-6 Trusses One Degree S.I.
XXXII
------------------------------------------------------------------------
4-09 Flexibility Coefficients
XXXIII
4-11 No S. I. Structures Chapter
9 XXXIV
4-12 LAB-IX Statically Indeterminate
Structure
4-13 Slope Deflection 10.1-10.3
XXXV
------------------------------------------------------------------------
4-16 Slope Deflection Examples
XXXV
4-18 Slope Deflection for Frames
10.4,10.5/XXXV
4-19 LAB-X Slope Deflection
4-20 Three Dimensional Structures
3.8,2.6
------------------------------------------------------------------------
4-23 Load Distribution XXXVI
4-25 Review
------------------------------------------------------------------------
5-3 Final Exam Thrusday May
3rd 7:30 - 9:30 AM
------------------------------------------------------------------------
Mechanics of Mechanics of Engineering Structures
1, Exams will be given during
the labs and are open books and open notes.
2. All homework assigned prior
to a lab and the lab assignment will be due at the end of each lab. Assignments
not turned in at this time will be accepted at the beginning of the next
class with a 20% late penalty. Assignments will not generally be accepted
at any other time.
3. In lieu of a lab, the first
week you will be given a take home review quiz on basic concepts in statics.
This quiz will only count as a regular lab assignment.
4. Most of the labs will not
have a full lecture in them, unless we fall behind. Generally there will
be a short review at the beginning of the lab and there will time for you
to work on the lab problems for the day. The instructor will answer questions
freely during the lab and assist the student with any difficulties in solving
the lab problems or homework problems. Note - You will NOT have
time to do both the homework and the lab problems in the lab. Generally
you should have about half of the total problems from the homework plus
the lab assignment completed before coming to the lab. You are responsible
for turning in all assignments, on time, at the end of the labs.
5. The lab/homework must represent
your work and copying will not be tolerated. However, you may work with
other students in and out of the lab on these assignments as long as they
are clearly your own work.
6. Grading System A = 91- 99
B+ = 87-90
B = 81- 86 C+ = 77-80
C = 71- 76 D+ = 67-70
D = 61- 66
7. Office Hours will be posted
and I will do my best to be available during those hours. However, unforeseen
emergencies arise that may cause me to be absent occasionally during those
hours. Also, I understand that you may from time to time need some help
during other times. Because of the above, I will see students at times
other than my office hours, if I am in my office and if I am not inordinately
busy. Please knock and ask. Also, feel free to email me questions at any
time. I will respond as quickly as possible.
8. Class attendance is not taken,
However, since the 10-minute quizzes and class work sessions count 18%
of your grade, you must be there the majority of the time. You will be
allowed to drop the lowest grades on about 10% of the 10 minute quizzes,
class work sessions and one of the labs. Thus excessive class cuts can
cost you points on your final grade.
9. Course overview: The course
starts out by reviewing some very basic concepts of statics; but gets progressively
more demanding. Do not be misled by the amount of material in the syllabus
that is similar to what you have had in statics. Techniques you learn here
will be essential to you in many of your later courses in Civil Engineering.
The key to success in this course is to work problems and then work some
more problems. The theoretical concepts are relatively straightforward.
However, you are expected to able to correctly apply them to a variety
of applications. If a coastal condominium is undermined and turns over
on its side during a hurricane, it doesn't matter if the structural engineer
the foundation engineer, the hydraulics engineer, and the construction
engineer all understood the laws of statics and dynamics. The building
has toppled and one of you must have missed something. All of you will
be sued.