Problem

A $3-$story steel momen$-$resisting$-$frame is subjected to thre following kateral loods at each level, together with each stiffress $K.$

$(1)$ Determine the displacement at level. $1.$

a$)8mm$

c$)10mm$

b$)5mm$

d$)13mm$

$(3)$ Determine the displacement at level $2.$

a$).18mm$

c$)22mm$

b$)25mm$

d$)13mm$

a$)$ Defermine the displacement al level $3.$

a$)40mm$

c$)35mm$

b$)25mm$

d$)30$mm