Based on the static equivalent seismic load concept $(f_s=m*a_s),$ calculate $f_s$ using the spectral

acceleration value in $0\mathrm{.}000378s$

Note: This static equivalent force is the maximum load that your structure will be subjected to during

your earthquake. It is also equal to the maximum base shear $V_{\text{t}\text{s}\text{o}\text{e}\text{x}}($as defined in seismic codes$)$ in your

structure during the earthquake.

$f_s(=f_{\text{m}\text{a}\text{x}})=m*a_s=m*PS{A}_a$

$(PS{A}_a=a_{s,\text{m}\text{a}\text{x}}={}^2{u}_{\text{m}\text{a}\text{x}}={}^{2}S{D}_e)$

where the subscript $s$ refers to static equivalent load procedure, $a$ to acceleration and $e$ to elastic

analysis. The structure has a damping ratio of $5\%.$