Answer
It will not hold this amount of tension.
Work Step by Step
We can see that the force will be due to tension. We now need to see what the force will be. We first find the angle of the walls:
$\theta=tan^{-1}(4/4.8)=39.8^{\circ}$
Using this value, we see that the x center of mass of each beam is 2.78 meters away from where the beam attaches to the ceiling. Thus, we find the overall tension is:
$=(2\ beams)(2.78)(170)(9.81)=9290 \ N$
It will not hold this amount of tension.
