Hello My suggestions; --Take Rx=7, Ry=8, --Do not accept the ladder as a support for S2-S4 columns, (remove stiffness ticks) --In the beam-wall junction, the beam width is 25 cm, the curtain is 20 cm, make the curtain width 25 cm, --Staircase Make the platform live load 0.350 t/m2, -- Complete the analysis by making all finite element widths 0.25 m, Ünver ÖZCAN