Guided Online Courses

Week 1: Introduction and seismic risk

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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

Learning outcomes:

  • 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.

Topics:

  • 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.