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3 cards from this section. Quick, good the night before a test.
What does lateral force mean in the context of seismic design?
Think about how buildings respond when shaken.
Define storey shear in simple terms.
Consider what happens to weight and force at different heights.
What is the primary purpose of calculating lateral forces in seismic design?
Think about why we need buildings to withstand earthquakes.
True or False: Storey shear is only a concern in buildings above 10 stories.
Recall that all structures need to withstand lateral forces.
A six-storey building has the following weights and heights: Storey 1: 50 kN (2m), Storey 2: 70 kN (3m), Storey 3: 80 kN (4m), Storey 4: 90 kN (4m), Storey 5: 100 kN (5m), Storey 6: 110 kN (5m). Calculate the lateral force at Storey 4 given a base shear of 350 kN.
Remember to sum the forces properly.
Discuss the implications of ignoring storey shear in a tall building. What failure modes might occur?
Consider how well the bottom can support the top.
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