Seismic Base Shear Example
Seismic equivalent lateral force (ELF) procedure example per ASCE 7-22 §12.8. Calculates approximate period Ta, seismic response coefficient Cs, base shear V, and vertical distribution of story forces Fx.
Given Parameters
total seismic weight (5 equal floors)
total building height
design spectral accelerations
SFRS per Table 12.2-1
Risk Category II
Calculation Steps
1. Approximate Fundamental Period
2. Seismic Response Coefficient Cs
3. Base Shear
4. Vertical Distribution of Story Forces
ELF Base Shear
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