40.14.1. Storey Drift Limit

Try these first

1. 1.

   What is the formula for calculating the Storey Drift Limit?

   Hint

   Think about what h represents in a building.

2. 2.

   Why is it important to limit storey drift?

   Hint

   Consider what could happen if buildings sway too much.

3. 3.

   What is the maximum allowable drift for a building with a storey height of 5 meters?

   • 0.02 meters
   • 0.004 meters
   • 0.04 meters

   Hint

   Use the formula we discussed.

4. 4.

   True or False: The Storey Drift Limit is only relevant for buildings over 10 stories tall.

   • True
   • False

   Hint

   Consider whether small buildings also experience lateral forces.

5. 5.

   You are designing a 25-meter tall building with a permissible drift limit. Calculate the maximum drift and discuss the implications of this limit on structural design.

   Hint

   Make sure to apply the formula correctly and consider what it means for construction.

6. 6.

   How would P-Delta effects alter your design calculations for a building reaching its drift limit during an earthquake?

   Hint

   Think about how forces change when lateral movement occurs.