calculate the story drift level for the structure

 

S1 S2 S1 5.0m S2 S4 S2 Plan Layout 5.0m Floor $1 $2 $3 54 4-3 25x35 40x40 30x30 45x45 2-1 25x40 40x40 40x30 45x45 S3 S3 3.5m 3.5m Floor 3x3.0-9.0m Elevation Layout Roof Normal 4.0m Dead Load (kN/m) 4.50 4.50 0.121 beff 1.00 2.00 0.25 Live Load (kN/m) 0.5