Toothpick bridges
The rules: "The bridge must be built only of round wooden toothpicks and glue for woodwork. Total mass of the bridge cannot exceed 100 grams. The bridge must span a 500mm gap of the loading platform."
This one holds over 500 pounds:
Here's an article on building bridges like this: Toothpick Bridge Building Contests. And another: The Toothpick Bridge
Here is another, simpler one for a high school class:
posted by Marshall Brain @ 1:55 AM
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