34.7.2. Storey Shear and Overturning Moment

Try these first

1. 1.

   What is storey shear?

   Hint

   Think of how forces are distributed in different parts of a building.

2. 2.

   Explain why overturning moment is significant.

   Hint

   Consider how height influences the forces acting on an object.

3. 3.

   What is the purpose of calculating storey shear in a building?

   • A. To determine seismic weight
   • B. To assess lateral force resistance
   • C. To calculate material costs

   Hint

   Storey shear relates directly to how buildings respond to lateral loads.

4. 4.

   True or False: Overturning moment is calculated using the lateral forces acting across all floors of a building.

   • True
   • False

   Hint

   Consider what contributes to an overturning moment.

5. 5.

   A structure has a total height of 20 m with an applied lateral load of 25 kN. If the building is divided into four equal storeys, calculate the storey shear for each storey and discuss how it might change across the heights.

   Hint

   Think about how forces are transferred within a structure.

6. 6.

   Analyze how an increase of 5 m in height affects the overturning moment of a building subjected to the same lateral force of 50 kN, originally acting at 15 m height.

   Hint

   Overturning moment is directly related to height, so anticipate increases with added height.