asymmetric gambrel 02

The gambrel truss shown is dimensioned and loaded as indicated below.

Dimensions and Loads:

a
b
c
d
  130 cm    182 cm    52 cm    218 cm    4 kN    5.9 kN  

The line of action of force is co-linear with member DG. Member BI is perpendicular to both AI and CI; member DG is perpendicular to both CG and EG. Find the forces carried in the members indicated in the table below.

Reactions:
(Denote rightward or upward forces applied to the truss as positive; leftward or downward forces applied to the truss as negative.)

Members:
(Denote tension forces with positive values; compressive forces with negative values.)

Member
Force

be sure to include units with your answers

You can earn partial credit on this problem.