Seismic Base Shear Calculator

Ss (short period)

S1 (1-sec period)

Site Class

Occupancy Category

Building Height

Number of Stories

SFRS Type

Total Building Weight

kips

Weight Per Floor

kips

Base Shear V648.0 kips

SDS0.800

SD10.480

Seismic Design CategoryD

Approximate Period Ta0.741 sec

Cs Coefficient0.0810

Fa / Fv1.20 / 1.80

Vertical Force Distribution

Story↕	Height (ft)↕	Cvx↕	Fx (kips)↕
1	15.0	0.0883	57.2
2	30.0	0.1920	124.4
3	45.0	0.3024	195.9
4	60.0	0.4174	270.4