Problem : Calculate the seismic base shear using the simplitied

static lateral force procedure for a two$-$story concrete building assuming that the

first$-$floor weight is $w_1=35k,$ and the second$-$floor weight is $40k.$ The height of

the first floor is $h_1=15ft,$ and the second floor is $12$ ft $.$ The seismic force$-$resisting

system is ordinary reinforced shear wall system. $S_S$ is $2\mathrm{.}02$ g and $S_1$ is $0\mathrm{.}6$ g $.$ The

building is located on soft rock site.

Calculate the vertical distribution of base shear to stories.