How do i build a 60cm bridge made of plywood strongest?

Question

what kinda structure should i use if the plywood is 70cmx7cmx2mm. Other materials can be included.

Answer 1

Build a truss to reinforce it. If you can cut a strip off each edge of the plywood, and glue it vertically to the edge with a strip to increase bonding area, you'll have a very, very rigid bridge.

Answer 2

I saw one hold 125kg,

Take a  wood and stick smaller pieces on it evenly then stick another big one on the smaller pieces (hard to explain)

It must look like a ladder with very short flat steps?

then create 2 big triangles (the 2 sides of the bridge) with that doubled wood.

And then just reinforce it with lots ofsmaller triangles placed at good points to support each other

Answer 3

use triangles