Bridge truss Static Equilibrium

[pegasus24]

Homework Statement

A bridge truss extends x = 214 m across a river (Fig. P12.68) where θ = 35°. The structure is free to slide horizontally to permit thermal expansion. The structural components are connected by pin joints, and the masses of the bars are small compared with the mass of a 1270 kg car at the center. Calculate the force of tension or compression in each structural component.

Homework Equations

Lami's Theorem
A/sin a = B/sin b = C/sin c

The Attempt at a Solution

I found the forces in most of the members except T_AC and T_CE.
How do i find the force? Should I use moment equation? Is so how should I apply it?

 

[PhanthomJay]

If you have correctly solved for the force in AB, then T_AC is just the horizontal component of the force in AB. Use the method of joints.

Welcome to PF!

 

[pegasus24]

If you have correctly solved for the force in AB, then T_AC is just the horizontal component of the force in AB. Use the method of joints.

Welcome to PF!

Thanks a lot.. I got it right now.. T_AC = T_AB cos 35