truss bridge due in 2 days

Insufficient data for a meaningful answer.

>>1115255
>inb4 OP is a chinese engineer who is responsible for building an actual bridge and hasn't started yet

>>1115252
FEA
done in 2 seconds.

>>1115252
I would say it is c)

Truss bridges are simple as fuck. I literally made mine the night before strength testing and it was somehow three times as strong as the next strongest design in the class. Of course, I learned nothing from the experience and my continued misplaced laziness and smugness meant that I dropped out not long afterwards.

TLDR do your fucking projects and study properly you lazy shit

After looking at the sticky, I'm surprised this isn't a thing: "No homework threads". Although, this thread is already covered in the hints and, as another anon pointed out, there's insufficient data. The only recommendation I can give is to shove the pieces up your butt.

>>1115255
im planning on going with the warren design as it looks easiest. im going to have to design the whole thing on google sketchup and write a paper with the calculations for the estimated forces (i hope to carry about 20 kg = 44 pounds at the center of the bridge), then i have to build the actual thing with sticks of balsa wood and woodglue