Lesson 1: Introduction to Shearwalls
Lesson 4: Shearwall Design: Capacity vs. Deflection Based Force Distribution
Lesson 9: Modelling Techniques and Tips
Course Summary

Part 3: Rigid Diaphragm Analysis

Introduction

This video focuses on rigid diaphragm distribution, contrasting it with the previously covered flexible diaphragm method. Guidelines from CSA O86 and ASCE 7-16 determine when a diaphragm is considered rigid or flexible based on deflection criteria. While the program does not calculate diaphragm deflection, users can perform a rigid analysis by disabling the flexible diaphragm analysis feature. The results include torsional analysis details for wind and seismic loads, which will be further explored in the next video.

Learning Outcomes

By the end of this lesson, you will be able to:

  • Differentiate between rigid and flexible diaphragm distribution methods in shearwall analysis.
  • Apply CSA O86 and ASCE 7-16 criteria to determine whether a diaphragm should be considered rigid or flexible based on deflection criteria.
  • Demonstrate how to perform a rigid diaphragm analysis in Shearwall Program by adjusting the appropriate settings.
  • Interpret torsional analysis results for wind and seismic loads in the log file after running a rigid diaphragm design.

Instructional Video (Part 3 of 4)

Video Run Time: 02:35 minutes

This video utilizes one project file and it is available for download below.