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Night School Past Course Details
Night School 20: Classical Methods of Structural Analysis
This course will address many of the classical methods used in the analysis of structures before the advent of the computer. It will illustrate how use of those methods can aid the engineer in understanding the modern analysis and design requirements for structural steel found in the AISC Specification, AISC 360-16. The course will start with a brief discussion of the history of structural analysis in order to place into context the development of these methods and to illustrate how they have influenced approaches currently used. The portal and cantilever methods, influence lines, slope-deflection method, and more will be reviewed. The method of moment distribution will be introduced and its link to the approximate second-order analysis approach of AISC 360-16 Appendix 8 will be discussed. The course will then discuss the “modern methods” of analysis and illustrate how they may be understood and developed from the classical methods already discussed.
We've prepared a few problems to whet your appetite for this upcoming Night School. Have some fun and solve these refresher problems to prepare for course topics such as virtual work, slope deflection, moment distribution and more. And if you don't get a perfect score, this course is perfect for refreshing your knowledge on these fundamental methods. Solutions will be posted by May 24, 2019.
Practice problems can be found here.
Note: This course is an encore presentation of Night School 5: Classical Methods of Structural Analysis.
The session will start with a brief discussion of the history of structural analysis in order to place into context the development of classical methods of analysis and to illustrate how they have influenced approaches currently used. Such topics as equilibrium, superposition, first- and second-order analysis, determinate and indeterminate structures, shear and moment diagrams, and deflected shapes will be reviewed. AISC specification requirements will also be discussed.
This lesson will begin with developing a definition for work and the principles of real work and virtual work. The lesson will continue with formulating the equations for strain energy. Calculating deflections by real work will be discussed and a systematic notation for deflections and the Law of Reciprocal Deflections will be developed.
This lesson will address calculating deflections by virtual work. The process for applying the principle of virtual work will be developed. Calculating deflections due to axial forces, shear and flexure will be covered as well as the relationship between flexural and shear deflections. The influence of temperature change on the structure will be introduced. Approaches for writing moment equations will be also reviewed.
This lesson will continue the discussion of deflection calculations and the principles upon which the various available methods are based. It will include discussion of direct integration, elastic weights, moment area, and conjugate beam. Slopes and deflections will be calculated at specific points on a beam span and slope and moment diagrams will be sketched. The use of the conjugate beam method for determining redundant moments will be introduced.
This lesson will continue the analysis of indeterminate structures by conjugate beam. Calculated deflections will be used with the method of consistent deflections to analyze indeterminate structures. The AISC 360-16 Specification for Structural Steel Buildings requirement that all deformations be considered in an analysis will be discussed and examples will be presented to illustrate the relative influence of these deformations on redundant forces and moments.
This lesson will continue the analysis of indeterminate structures. Analysis of indeterminate structures by the slope-deflection method will be developed using the principles previously developed for deflection calculations. Sidesway and non-sidesway frames will be presented and discussed. Approaches for modeling structures will be illustrated, including continuous beams and multi-story sway- and nonsway-frames.
The portal and cantilever methods of approximate frame analysis will be presented. The method of moment distribution will be introduced and the special approach for treatment of frames that exhibit sidesway will be presented. In addition, an approach that permits a somewhat independent checking of the moment distribution process will be developed.
This lesson will discuss the “modern methods” of analysis and illustrate how they may be understood and developed from the classical methods. It will also include a discussion of second-order analysis. The classical methods of analysis will be used in an iterative way to carry out a second-order analysis and to help explain the concepts of second-order analysis. The link between moment distribution and the approximate second-order analysis approach of AISC 360-16 Appendix 8 will be discussed.
Quiz and Attendance Records
Quiz 1: 1. a, 2. d, 3. c, 4. d, 5. e, 6. b, 7. c, 8. d, 9. d, 10. d Quiz PDF
Quiz 2: 1. e, 2. d, 3. a, 4. b, 5. e, 6. a, 7. b, 8. c, 9. c, 10. d Quiz PDF
Quiz 3: 1. d, 2. d, 3. c, 4. b, 5. d, 6. a, 7. d, 8. b, 9. d, 10. b Quiz PDF
Quiz 4: 1. d, 2. c, 3. d, 4. d, 5. b, 6. c, 7. b, 8. a, 9. d, 10. c Quiz PDF
Quiz 5: 1. a, 2. e, 3. c, 4. b, 5. b, 6. d, 7. b, 8. b, 9. c, 10. a Quiz PDF
Quiz 6: 1. c, 2. c, 3. d, 4. b, 5. c, 6. b, 7. a, 8. c, 9. c, 10. a Quiz PDF
Quiz 7: 1. c, 2. e, 3. d, 4. c, 5. b, 6. b, 7. d, 8. d, 9. c, 10. a Quiz PDF
Quiz 8: 1. d, 2. a, 3. b, 4. a, 5. e, 6. b, 7. a, 8. b, 9. c, 10. c Quiz PDF
Final Exam: 1. c, 2. a, 3. b, 4. a, 5. a, 6. c, 7. d, 8. a, 9. b, 10. d, 11. c, 12. c, 13. e, 14. b, 15. a, 16. b, 17. c, 18. d, 19. b, 20. a, 21. a, 22. d, 23. d, 24. b Quiz PDF
Night School 19: Connection Design: Tips, Tricks and Lessons Learned
The first Night School course of 2019, Connection Design: Tips, Tricks, and Lessons Learned, tackles everything you need to know about steel connection details. Taught by five of our industry’s foremost experts, this course will provide instruction on the connection design process and the latest design methods. There will be a special focus on delegated design – not just “how to design it.” These eight sessions will cover what information to provide on construction documents and the complications that arise from insufficient information. The course starts with an overview of delegated connection design, and then proceeds to go in depth on the most useful connection types. The final session will be a rare opportunity to hear stories on lessons learned from the unmatched experience of our speakers. This course will provide instant benefit to you and your practice, whatever role you have in connection design.
This session will focus on the responsibilities, relationships and communication among the various parties involved in the delegated design process. It will discuss how delegated connection design is addressed in the AISC Code of Standard Practice. Ways in which proper communication between the engineers can be maintained to ensure the safety of the structure while also addressing concerns about contract management will also be presented. Finally some general tips for those wishing to perform delegated connection design will be provided.
The cost of connections is a significant percentage of the total cost of steel-framed structures. This webinar reviews how designers can efficiently delegate connection design in a manner that saves time, reduces RFI’s, reduces cost, and conforms with the requirements of the Code of Standard Practice. This session discusses the EOR’s responsibility regarding delegation of connection design as stipulated by the COSP and reviews how decisions made relative to framing configuration during design can substantially affect connection cost. Tips, guidelines, suggestions, and examples will be presented to provide designers of all levels of experience a better understanding on how to properly delegate connection design in a manner that will result in safer, more constructable, and more economical steel-framed building structures.
Indisputably, beam end shear connections comprise the bulk of the total connections in a structural steel package. Connection designers have a plethora of options in regard to the type of shear connections to use. Magnitude of load, geometry, main member type, erection ease, shop schedule, and project specifications are just some of the considerations that impact the decision on the type of connection to use.
This presentation will present the information that a delegated connection designer will: (1) need to make an informed decision on connection type and design, and; (2) need to provide to the EoR to facilitate the review process.
Bolted or welded; should the EoR and delegated connection designer collaborate on this decision? Gravity or Lateral; does it make a difference in the design of the connections? Beam axial load equals transfer force; should it be obvious to the connection designer where, and for what magnitude, transfer forces are required in design?
This presentation will present the information that a delegated connection designer will: (1) need to in order to make an informed decision on connection type and design, and; (2) need to provide to the EoR to facilitate the review process.
Don’t waste time showing too much information that isn’t used or that can unnecessarily complicate your design. This session will include tips for successful delegated vertical bracing design and what information should be included on drawings, which will help you limit RFIs and resubmittals.
V- and inverted V-type braced frames are common brace configurations. Generally referred to as chevron systems, the configuration requires braces to frame to braced frame beams away from the beam-column joint. Typically, the effects of the brace forces on the beam and the impact on the beam end connections are overlooked. Standard practice in connection design is to assume that the joint is isolated from the frame, and to assume that the impact of the brace forces on the beam is isolated to the connection region. If the algebraic sum of the vertical components of the braces forces is zero, this assumption is generally valid. However, connection designers rarely deal with a zero summation of vertical force components. When the summation of the vertical components of the brace forces is non-zero, the location of the work point along the length of the beam and the span of the beam can significantly impact how beam shear and moment is distributed along the span of the beam, especially in the region of the connection. This is referred to as the chevron effect.
This webinar presents discussion on how brace forces are distributed through a chevron connection, and explores the impact of the brace forces on the design of the beam . Formulas are presented which allow the designer to determine if the Chevron Effect will impact the beam design.
From mechanistic design forces to critical welds to protected zones to prequalified connections to exceptions, the SEoR and delegated connection designer need to be in phase with one another before connection design begins. Documented communication on all aspects of the project between the SEoR, fabricator, erector, and inspector is paramount in order to avoid unwelcome shaking of project schedule and budget.
This presentation will present the information that a delegated connection designer will: (1) need to in order to make an informed decision on connection type and design, and; (2) need to provide to the EoR, fabricator, erector, and inspector to facilitate the review and quality processes.
In this session, the speakers will share stories, from their respective careers, that have shaped their views on how delegated connection design can be successfully implemented on structural steel projects.
Quiz and Attendance Records
Quiz 1: 1. c, 2. a, 3. b, 4. a, 5. b, 6. b, 7. c, 8. c, 9. b, 10. c Quiz PDF
Quiz 2: 1. b, 2. a, 3. a, 4. d, 5. d, 6. a, 7. b, 8. d, 9. c, 10. b Quiz PDF
Quiz 3: 1. d. 2, b, 3. c, 4. b, 5. b, 6. c, 7. d, 8. b, 9. b, 10. a Quiz PDF
Quiz 4: 1. c, 2. c, 3. b, 4. b. 5. b, 6. c, 7. a, 8. d, 9. c, 10. c Quiz PDF
Quiz 5: 1. b, 2. d, 3. b, 4. b, 5. b, 6. c, 7. c, 8. d, 9. a, 10. b Quiz PDF
Quiz 6: 1. a, 2. a, 3. b, 4. b, 5. h, 6. a, 7. e, 8. d, 9. a, 10. b Quiz PDF
Quiz 7: 1. c, 2. b, 3. d, 4. c, 5. a, 6. b, 7. c, 8. a, 9. a, 10. c Quiz PDF
Quiz 8: 1. b, 2. b, 3. a, 4. c, 5. a, 6. b, 7. a, 8. c, 9. a, 10. c Quiz PDF
Final Exam: 1. c, 2. b, 3. c, 4. b, 5. c, 6. b, 7. c, 8. d, 9. a, 10. b, 11. d, 12. a, 13. b, 14. c, 15. c, 16. a, 17. b, 18. c, 19. b, 20. c, 21. a, 22. a, 23. c, 24. k Quiz PDF