40.8. Shear Walls and Dual Systems

Try these first

1. 1.

   What is a shear wall?

   Hint

   Think about what keeps a building from swaying.

2. 2.

   Define a dual system in seismic design.

   Hint

   Consider how different elements work together to resist forces.

3. 3.

   What is the main purpose of a shear wall?

   • To resist lateral forces
   • To provide insulation
   • To support the roof

   Hint

   Focus on the function of the wall in seismic activities.

4. 4.

   True or False: A dual system can include both shear walls and moment-resisting frames.

   • True
   • False

   Hint

   Recall the different components of a dual system.

5. 5.

   Given a design case for a 10-story building in a seismic zone, outline a dual system that includes shear walls and moment-resisting frames, detailing the reasoning behind your placements.

   Hint

   Consider how the building’s weight and lateral forces interact.

6. 6.

   If a shear wall is found to be under-strength during inspection, outline a retrofitting method that could help strengthen the wall while maintaining overall building integrity.

   Hint

   Retrofitting aims to enhance existing structures without significant alterations.