Alright so I have to build a bridge for school, and it has to be able to hold 75 pounds does anyone know of any good ideas or structures they've used before or any ideas on design or structure? Any ideas would be assume +K for good responses.
Would that be balsa wood? If so i did the exact same project and yea i stand by triangles for strength. Its the strongest shape other than an arch if i remember correctly. And yea a classic truss bridge will do fine.