Calculate seismic base shear and lateral forces on solar structures using ASCE 7 equivalent lateral force procedure.
Input Parameters
Results
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Seismic Coeff (Cs)
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Base Shear (V)
lbs
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Lateral per Post
lbs
--
Overturning Moment
ft-lbs
Note: Solar arrays are typically Seismic Design Category A-C. Ground-mount arrays use R=2.5 (non-building structures). SDS values come from USGS seismic hazard maps.
Reference
Cs = SDS / (R/Ie) (ASCE 7-22 Eq 12.8-2)
Cs_min = 0.01 (ASCE 7-22 Eq 12.8-5)
Base Shear V = Cs × W
Overturning M = V × height
R = 2.5 for non-building structures (solar)