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CE $634$ Structural Vibrations

$)-$ Peak ground characteristics $($displacement$,$ velocity, and acceleration$)$ of an earthquake are $6\mathrm{.}0in,16i\frac{n}{sec},$ and $0\mathrm{.}40g,$ respectively. Develop $84\mathrm{.}1\%$ smoothed response spectra $($RS$)$ on the paper provided on the back. Assume $5\%$ damping and firm ground. Using the RS$,$ for a single story one$-$bay frame assuming a rigid girder determine drift and column forces $($shear and moment$)$ if total $m=0\mathrm{.}05$ kips$-s\frac{e{c}^2}{in},k=40$kip$\frac{s}{?}$ in $($both columns$)$ with story height of $9-$ft$.$ If the period is increased threefold what is the effect on drift and column forces using the same RS$?$