In Princeton's Civil Engineering class, everyone teamed up to build the strongest bridge they could, and then test to see if a car could drive across it, and how much weight it would support. They built it with three pieces of cardboard, held together by tape and popsicle sticks, with suspension cables made out of string to hold the bridge up from the top and supports on the bottom made out of paper rolled into tubes to hold the bridge up. The final verdict was that a car could, in fact, drive across the bridge, and that it could support 87 nuts (like nuts and bolts) before collapsing.
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