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4 cards from this section. Quick, good the night before a test.
What is the formula for calculating the lateral force at each storey?
Think about how base shear and weight contribute to lateral forces.
Define seismic weight.
Remember it relates to the floor's loading.
What does Qᵢ represent in the formula for calculating lateral force?
Think about what you’re trying to calculate with the formula.
True or False: The base shear can be calculated without knowing the total seismic weight.
Link it back to the formula for base shear.
Calculate the lateral force at each storey for a building with three floors: Floor 1 has 1000 kg at 3m, Floor 2 has 2000 kg at 6m, Floor 3 has 3000 kg at 9m. Assume a base shear of 2000 N.
Let’s sum contributions of weight and height first!
Discuss how incorrect lateral force calculations could lead to failures in a building’s design. Give examples from case studies of seismic zones.
Look into historical examples of building failures during earthquakes.
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