A suspension bridge's cables are beautiful to look at, but they also enable the bridge to cross large spans. Make a model suspension bridge to see how it works. After you test the strength of the beam ...
overall: 16 in x 70 in x 13 1/2 in; 40.64 cm x 177.8 cm x 34.29 cm ...
(CNN) — It's just physics. Friendly civil engineering. Take a load bearing deck held by vertical suspender cables attached to larger main support lines anchored by a pair of towers and the ground -- ...
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