Q2

The portal frame carries vertical and horizontal forces as shown in the figure below. If Mp is

equal to 40 kNm determine the upper and the lower load factors against collapse. Consider at

least 2 combined mechanisms.

2 m

60 KN

2 m

B

E

2M₂

A

2 m

30 kN/m

Mp

2 m

с

Mp

D

2 m