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How does ideCAD define equivalent lateral load, according to ASCE 7-16, for two earthquake directions?

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  • Equivalent earthquake force procedure; it is used to control irregularities as indicated in Table 12.3-1 and 12.3-2.

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  • Seismic effects are calculated automatically with the Modal Response Spectrum Analysis.

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Seismic loads acting on buildings; the floor level, assumed to accumulate the story masses, is accepted as the horizontal load acting on the floors. Seismic effects determined for two perpendicular directions are combined as specified in the regulation. The total equivalent lateral force is known as the base shear force and is used in the earthquake-resistant design of structures.

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