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This course is part of the Structural Earthquake Engineering for Buildings Certificate Program.

INSTRUCTORS: 
Finley A. Charney, Ph.D., P.E., F.ASCE F.SEI
Justin D. Marshall, Ph.D., P.E., M.ASCE

Purpose and Background

This course will familiarize practitioners with the four seismic analysis methods in ASCE 7: Equivalent Lateral Force (ELF), Modal Response Spectrum (MRS), Linear Response History (LRH), and Nonlinear Response History Analysis (NRHA). In addition, the process to generate floor response spectra to determine the accelerations and required attachment forces for nonstructural components and systems will be presented.

Benefits and Learning Outcomes

Upon completion of this course, you will be able to:

• Describe the analysis process and requirements for the Equivalent Lateral Force, the Modal Response Spectrum, Linear Response History, and Nonlinear Response History Analysis methods.
• Determine which analysis methods are permitted for seismic analysis in accordance with ASCE 7 for a given structure based on the structure characteristics and seismic hazard.
• Apply the Equivalent Lateral Force method of analysis to determine seismic demands on building structures as a final design or as a preliminary design for more rigorous analysis methods.
• Describe the similarities and differences in Modal Response Spectrum Analysis and Linear Response History Analysis and explain how these methods can be formulated into a “unified” seismic analysis methodology.
• Perform unified linear dynamic seismic analysis of structures using either the Modal Response Spectrum or Linear Response History Analysis method to determine seismic force and displacement demands in structures.

Assessment of Learning Outcomes

Achievement of the learning outcomes by attendees will be assessed through (3) exams.

Who Should Attend?

Practicing engineers with a basic background in seismic design looking to further develop their skills in the three linear seismic analysis methods in ASCE 7.

How to Earn your CEUs/PDHs

This course is worth 2.4 CEUs/24 PDHs. To receive your certificate of completion, you will need to complete (3) exams and receive a passing score of 70% or higher.

How do I convert CEUs to PDHs?

1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]

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Course Outline

Week 1: Introduction and Basic Structural Dynamics
Course and Week Introduction
Overview of ASCE 7-16 Analysis Methods
Mathematical Basis of Dynamics Methods I
Mathematical Basis of Dynamics Methods II
Learning Exercise
Ductility-Based Design Concepts
Development of Multi-Degree of Freedom System Equations
Solution of Dynamic Equations of Motion
Learning Exercise
Conclusion

Week 2: Structural Dynamics and ASCE 7 Analysis Methods
Week Introduction
Solving the Single DOF System
Modal Properties of Dynamic Systems
Learning Exercise
Influence Vector and Rigid Body Modes
Preliminary Modeling Considerations
Preliminary Analysis using Equivalent Lateral Force Method
Learning Exercise
Conclusion

Week 3: Modeling Considerations Part 1
Week Introduction
Modal Response Spectrum Analysis
Modal Response History Analysis
Learning Exercise
Top-Down Modeling and Unified Analysis
Modeling for Static and Dynamic Analysis
Modeling P-Delta Effects
Learning Exercise
Conclusion

Week 4: Modeling Considerations Part 2
Week Introduction
Modeling Diaphragms
Modeling System Mass
Learning Exercise
Modeling Damping
Issues Specific to Modal Response Spectrum Analysis
Issues Specific to Linear Response History Analysis
Learning Exercise
Conclusion
Exam: Week 1-4

Week 5: Seismic Loads and Ground Motion Records
Week Introduction
Ground Motion Properties
Ground Motion Selection Criteria and Disaggregation of Hazard
Learning Exercise
Using the PEER NGA Database
Using the PEER NGA Database II
Basics of Ground Motion Modification
Learning Exercise
Conclusion

Week 6: Overview of ASCE 7-16 Analysis and Design
Week Introduction
Spectral Matching of Ground Motions
Overview of the Seismic Analysis Procedures
Learning Exercise
Load Combinations
Redundancy and Overstrength
Analysis Requirements and Acceptance Criteria
Learning Exercise
Conclusion

Week 7: Modal Response Spectrum Analysis
Week Introduction
ASCE 7-16 Modal Response Spectrum Requirements, Part 1
ASCE 7-16 Modal Response Spectrum Requirements, Part 2
Learning Exercise
ASCE 7-16 Modal Response Spectrum Requirements, Part 3
ASCE 7-16 Modal Response Spectrum Requirements, Part 4
Simple Case Study
Learning Exercise
Conclusion

Week 8: Modal Response History Analysis
Week Introduction
ASCE 7-16 Modal Response History Requirements, Part 1
ASCE 7-16 Modal Response History Requirements, Part 2
Learning Exercise
ASCE 7-16 Modal Response History Requirements, Part 3
Simply Case Study
Simply Case Study and Metod Comparison
Learning Exercise
Conclusion
Exam: 5-8

Week 9: Case Study Structure and ELF Preliminary Analysis
Week Introduction
Building Description
Description of Seismic Hazard
Learning Exercise
Development of ELF lateral forces
Preliminary System Modeling
Evaluation of Irregularities, Redundancy, Drift and Stability
Learning Exercise
Conclusion

Week 10: ELF Preliminary Checks and Modal Response Spectrum Analysis
Week Introduction
ELF Drift and Accidental Torsion
Mass and P-Delta Modeling
Learning Exercise
Modal Properties including Semirigid Diaphragm Modeling
Running the Modal Analysis and Displacement Results
Force Results, Modifying and Scaling
Learning Exercise
Conclusion

Week 11: Accidental Torsion and Linear Response History Analysis
Week Introduction
Review of Accidental Torsion in Modal Response Spectrum
Development of Spectrally Matched Ground Motions
Learning Exercise
Overview of Analysis Procedures
MRH Displacement Results
MRH Force Results
Learning Exercise
Conclusion

Week 12: Analysis Results Comparison, Floor Spectra and Course Review
Week Introduction
Additional Results from MRH
Comparison of Results from MRH, MRS, ELF
Learning Exercise
Determination of Floor Spectra and Calculation of Nonstructural Component Forces
Overview of Nonlinear Response History Analysis
Review of Course Materials
Learning Exercise
Conclusion
Exam: Week 9-12