4.5. Dynamic Amplification Factor (DAF)

Try these first

1. 1.

   What does DAF stand for?

   Hint

   What does each letter represent?

2. 2.

   What does a DAF value greater than 1 indicate?

   Hint

   Higher than what's normal?

3. 3.

   What does a DAF of greater than 1 indicate?

   • No amplification
   • Amplified motion
   • Static behavior

   Hint

   Think about whether the motion increases.

4. 4.

   True or False: DAF only applies to static loads.

   • True
   • False

   Hint

   Consider if DAF relates to dynamic forces.

5. 5.

   A structure experiences a maximum dynamic displacement of 15 cm and a static displacement of 5 cm. Calculate the DAF and discuss its implications in earthquake engineering context.

   Hint

   Use the ratio of the two given displacements.

6. 6.

   Examine a scenario where two buildings with different natural frequencies are subjected to the same dynamic load during an earthquake. How would their DAF values differ? Discuss the potential outcomes.

   Hint

   Think about how frequency relations affect DAF.