In the two$-$storey building given below, storey shear forces according to the

information given below,

Find the lateral displacements of the floors and their first natural voting period.

Stiffnesses will be used without reduction in the calculations. Base shear force is $75kN,$

$W1=240kN,W2=260kN$ duration. All columns have a square section and the side edge

is $35cm.$ All

For beams, $I=36dm4.$ On the $zth$ floor, $h=3\mathrm{.}8m,$ and on the normal floor, $h=3\mathrm{.}2m.$

Material C $30$