Lesson 1: Introduction to Shearwalls
Lesson 2: Adjusting Units, Snap Increments, and Site Information
Lesson 3: Diaphragm Analysis
Lesson 4: Shearwall Design: Capacity vs. Deflection Based Force Distribution
Lesson 5: Shearwall Design: Deflection Analysis
Lesson 6: Hold-Down Design
Lesson 7: Single Shearwall Design: An Example
Lesson 8: Outputs, Data and Information Management
Lesson 9: Modelling Techniques and Tips
Lesson 10: The Speed of Structural Design in Shearwalls
Course Summary
Part 7: Seismic Information and Seismic Irregularities
Introduction
This video explains seismic information and irregularities in shearwall design. It introduces two key tables: Seismic Information, which details mass, forces, and story shear capacity, and Seismic Irregularities, which identifies structural irregularities per NBC. A key focus is ensuring the overcapacity ratio between the first and second stories remains within a given rangeto prevent soft story conditions.
Learning Outcomes
By the end of this lesson, you will be able to:
- Interpret seismic design results by analyzing the Seismic Information and Seismic Irregularities tables in Shearwalls Program.
- Evaluate overcapacity ratios between building stories to ensure compliance with CSA O86 and prevent soft story conditions.
- Identify seismic irregularities in accordance with NBC, understand their impact on structural stability, and determine if they cause design failures.
- Recognize Program limitations in detecting certain irregularities and understand when alternative analysis methods may be required.
Instructional Video (Part 7 of 7)
Video Run Time: 04:04 minutes
This video utilizes two project files and they are available for download below.