4.2.1. Examples

Try these first

1. 1.

   What is the difference between a pin and a roller support?

   Hint

   Think about how much movement each support allows.

2. 2.

   Define internal forces in the context of frame structures.

   Hint

   Consider what happens inside the beams and columns.

3. 3.

   What is an example of an internal force?

   • Tension
   • Weight
   • Pressure

   Hint

   Think about forces that act within the members.

4. 4.

   True or False: A roller support can resist lateral forces.

   • True
   • False

   Hint

   Consider what movement a roller allows.

5. 5.

   Given a frame structure with a fixed end and a roller at the opposite end, compute the internal forces in the beam under a point load applied at mid-span.

   Hint

   Sketch a free body diagram and label all forces.

6. 6.

   Design a multi-story building using frame structures and specify how you would determine internal forces in each frame member.

   Hint

   Consider dynamic loads like wind and seismic activity.