Week 1: Introduction and seismic risk
- Summarize the history of the development of seismic design provisions in the U.S.
- Accurately define the difference between seismic risk and seismic hazard.
- Correctly identify the seismic risk associated with a given project location.
- Course and instructor introduction
- Course objectives/outcomes
- Course content
- Seismic building codes in the U.S.
- Seismic risk analysis
- Weekly summary
Week 2: Influence of soil stiffness on ground motions
- Correctly define the different spectral parameters used to define the seismic hazard in ASCE 7.
- Determine the site classification given the geotechnical parameters.
- Accurately summarize the impact site classification has on the seismic hazard response spectrum.
- Quantification of ground motions
- ASCE 7 ground motion parameters
- Influence of soil stiffness on site response
- Site class determination
- Determination of site class coefficients Fa, Fv, and Cv
- Influence of site class on spectral shape
Week 3: Ground motion parameters, seismic design category, and response spectra
- Determine the spectral accelerations for a given site using ASCE 7 or the online tools.
- Compute the site coefficients used to modify spectral accelerations to account for the site class.
- Establish the seismic design category using the design spectral accelerations.
- Develop the design response spectrum for a given project site using ASCE 7 or the online tool.
- Determination of spectral accelerations and site coefficients
- Determination of the seismic design category
- Development of the design response spectrum
Week 4: Structural systems and combinations of systems
- Define the three seismic performance factors assigned to lateral resisting systems.
- Determine the acceptability of a given lateral system based on the seismic design category and structure height.
- List and describe the different types of steel and reinforced concrete lateral resisting systems.
- Summarize the advantages and disadvantages of different lateral resisting systems.
- Seismic performance factors
- Bearing wall, building frames, and moment frames
- Structural steel lateral resisting systems
- Reinforced concrete lateral resisting systems
- Combination lateral resisting systems
Week 5: Horizontal and vertical structural irregularities
- List and define the horizontal and vertical irregularities in ASCE 7.
- List the penalties which affect seismic analysis and design of structures with structural irregularities in ASCE 7.
- Correctly determine the presence of horizontal and vertical irregularities in a structure in accordance with ASCE 7.
- Impact of irregularities on seismic response
- Analysis and design penalties associated with irregularities
- Horizontal structural irregularities
- Vertical structural irregularities
Week 6: Diaphragm flexibility, accidental torsion, and analysis requirements
- Define the three different diaphragm idealizations used in ASCE 7.
- List and describe the four analysis methods specified in ASCE 7.
- Specify which analysis method can be used to determine seismic demands for a given project.
- Calculate accidental torsion and determine when it needs to be applied in seismic design.
- Idealization of diaphragm behavior in ASCE 7
- Selection of structural analysis procedure for seismic load determination
- Inherent and accidental torsion
- Requirements for including torsion in seismic analysis
Week 7: Load combinations, redundancy & overstrength, effective seismic weight
- Correctly calculate and apply the redundancy factors in load combinations with seismic forces.
- Determine the elements that must be designed using the load combinations including the overstrength factor.
- Accurately calculate the seismic weight of a building structure for determination of the seismic base shear.
- Load combinations with seismic load effects
- Calculating and using the redundancy factor
- Overstrength factors and where they apply to structural design
- Orthogonal load effects
- Calculating the effective seismic weight
Week 8: Modeling requirements, period of vibration, and drift
- List the requirements of the computational model used to analyze the structure for seismic forces.
- Calculate the approximate fundamental period that can be used to determine the seismic forces.
- Compute amplified story drifts and verify they are less than ASCE 7 prescribed drift limits.
- Requirements of the computational model for determining seismic force demands
- Methods to approximate the period of vibration of the structure
- Calculating the period of vibration using an analytical model
- Determining elastic story drifts from an analysis model
- Calculating amplified story drifts
- Checking amplified story drifts against ASCE 7 prescribed limits
Week 9: Equivalent lateral force and modal response spectrum analysis
- Select which of the four analysis methods is allowable for a given structure in accordance with ASCE 7.
- Correctly compute the seismic force demands in accordance with the equivalent lateral force method.
- Accurately calculate the seismic force demands in accordance with the modal response spectrum analysis method.
- Selection of appropriate analysis methods in ASCE 7
- Basis for the equivalent lateral force method
- Application of the equivalent lateral force method
- Basis for modal response spectrum analysis method
- Application of the modal response spectrum method
Week 10: Linear and nonlinear response history analysis
- Discuss the differences between response spectrum and response history analysis in determining seismic forces.
- Apply the linear response history analysis method to compute seismic force demands in structures in accordance with ASCE 7.
- List the steps in the nonlinear response history analysis method.
- Basis for response history analysis
- Selection of ground motions for response history analysis
- Basis for linear response history
- Application of the linear response history method
- Basis for nonlinear response history
- When to use nonlinear response history analysis
- Summary of steps for nonlinear response history analysis
Week 11: Analysis comparisons and diaphragm forces
- Discuss the differences between the equivalent lateral force, modal response spectrum, and linear response history analysis methods for determining seismic design demands.
- Accurately calculate diaphragm forces for all levels of a building using the provisions of ASCE 7.
- Compute the design forces in the diaphragm, chords, and collectors using the equations in ASCE 7.
- Comparison of ELF, MRSA, and LRH
- Elements of structural diaphragms
- Calculation of diaphragm forces
- Load path from diaphragm to lateral resisting system
Week 12: Non-structural components and nonbuilding structures
- Summarize the analysis and design process used for seismic design of nonbuilding structures.
- Determine when seismic design of non-structural components and systems is required.
- Compute the seismic forces used to design the anchorage for non-structural components and systems.
- Different types of non-building structures
- Seismic design non-building structures
- Types of non-structural components
- Seismic design of non-structural components
This course outline is subject to change.