Recent content by Lambro6

Yes there is Kevlar holding the arches together from either end so they can't spread apart. If you look at my other thread I've explained it slightly better. Thanks

No I'm not sure how to draw a bending moment diagram for such a shape. We've only covered simple beams and truss structures.

Thanks very much for the effort you've put in here, I appreciate it. Can I ask, what is the formula(s) you used to put all those numbers into?

(1) by placing the arch in hot water for an hour then bending it and leaving it to dry in the bent form. And yes, then wrapping and knotting the string around the arches. (2) yes it is a 9x9 cross section spanning the distance of approximately 520mm

I can give you all the dimensions which you've stated as missing, but we're really looking for a simple analysis of the load that will be put on the arches (hopefully achieving around 20kg - as the test for our bridge is one to destruction). The 2 arches are simply 2 long beams of balsa wood...

Anyone?

Hi all, basically we're building a model bridge (30 grams) for a mechanical engineering project out of balsa wood and kevlar (for the strings). I've attatched a pdf file of the bridge design, although it doesn't show the strings. We are wanting to do some basic load compression calculations...