12.1. Introduction

Try these first

1. 1.

   What does the stiffness method primarily focus on?

   Hint

   Think about what characteristic of a structure is being analyzed.

2. 2.

   What type of indeterminacy arises when the number of unknown forces exceeds the available equations?

   Hint

   Remember the differences between static and kinematic.

3. 3.

   What is the primary variable in the stiffness method?

   • Forces
   • Displacements
   • Both

   Hint

   Consider which unknowns are prioritized.

4. 4.

   True or False: The flexibility method requires that the structure be statically indeterminate.

   • True
   • False

   Hint

   Think about the definitions of flexibility.

5. 5.

   Consider a cantilever beam subjected to a point load. Describe how you would analyze its behavior using both stiffness and flexibility methods?

   Hint

   Reflect on how each method requires different initial conditions.

6. 6.

   You are designing a multi-story building. Discuss how both stiffness and flexibility approaches could impact your design decisions.

   Hint

   Think about how buildings need to withstand forces without collapsing.