Introduction

The final video in Lesson 2 introduces torsional analysis under the rigid diaphragm assumption. It explains how eccentricities in mass and stiffness can cause torsional effects and emphasizes the importance of modelling shearwalls on both sides of the building to ensure lateral stability. The video demonstrates how the software distributes lateral forces based on stiffness when using a rigid diaphragm, showing how wall layout and stiffness influence load paths. It also shows how to interpret the analysis results to identify torsional behavior and potential design concerns.

Résultats de l'apprentissage

A la fin de cette leçon, vous serez capable de :

• Describe how torsional effects arise in buildings with rigid diaphragms due to asymmetrical stiffness or mass distribution.
• Explain how the Shearwalls Program performs torsional analysis using stiffness-based force distribution.
• Recognize the importance of balanced wall placement and stiffness to minimize torsional irregularities.
• Interpret torsional analysis results within the program to inform lateral design decisions.

Vidéo d'instruction

Video Run Time: 02:16 minutes

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