Which Design Should I Use for a Paper Bridge

[petern]

I'm trying to build a bridge but I have no clue where to start. I need to make a poster first but I don't know which design to use.

I have found a website with the exact same project I need to make. For all the details, please go to www.gravitykills.net.

It has to be made of paper, hold 105 kg, and weigh no more than 125 g.

What I'm trying to do now is select a design and make a poster. The instructions for the poster are on that website.

 

[Pyrrhus]

The bridge's design in the webpage is a truss. It's basicly 2 plane trusses that hold a deck, and joined together by members.

 

[petern]

Is there a particular design that will work well for this? http://www.jhu.edu/virtlab/bridge/truss.htm

 

[Pyrrhus]

Well a good design need to take into account mechanical properties of the construction material such as young's modulus. You take one of the members and see what is rupture stress of the paper and such. Basically a Stress-Strain diagram of the material will be useful.