Spaghetti bridges

Building a spaghetti bridge is an educational experiment that demonstrates how bridges work. If you participate in a spaghetti bridge building contest, the contest rules are likely to specify allowable materials, the size of your bridge and how it will be judged. Success is typically determined by how many times its own weight your bridge can hold without breaking. Thus, your goal is to build a lightweight bridge that can support a heavyweight load.
This annual competition, hold at Amirkabir university in Tehran. The students from important universities of Iran participate in this competition every year.
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