6.15.2. Ductility Demand

Try these first

1. 1.

   Define ductility demand.

   Hint

   Think about how much a structure can bend before it fails.

2. 2.

   What is the response reduction factor?

   Hint

   Remember the R in the design equations!

3. 3.

   What defines ductility demand?

   • A measure of material type
   • Maximum displacement divided by yield displacement
   • Total weight of structure

   Hint

   Think about what happens before failure.

4. 4.

   True or False: Ductility demand is only relevant for steel structures.

   • True
   • False

   Hint

   Consider different structures, not just steel.

5. 5.

   A structure experiences a maximum displacement of 12 inches with a yield displacement of 4 inches. Calculate its ductility demand and discuss its implications for design.

   Hint

   Remember the formula for ductility demand.

6. 6.

   Consider a seismic design scenario where structural materials can achieve 10% ductility. If the expected maximum displacement during an earthquake is 8 inches, calculate the yield displacement and discuss the implications.

   Hint

   Think about how ductility impacts material choice.