Why are arch bridges stronger than beam ones?

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Arch bridges are stronger than beam bridges because their design allows for the distribution of weight along the curve, effectively transferring loads to the supports. This shape minimizes tension and maximizes compression, making arches more efficient in supporting weight. Pasta, like many materials, is typically stronger in compression than in tension, which aligns with the arch design's advantages. The amount of pasta used in an arch structure is generally more than in a flat beam, contributing to its strength. Understanding these principles can enhance the design and performance of a pasta bridge in a physics project.
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When building a pasta bridge, why are arches or triangular peaks able to support more weight than flat beam bridges? Assume the weight would be attached to the base/deck of the bridge.

I'm building a pasta bridge for my Physics class and I was curious. Thank you!
 
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Is pasta stonger in compression or tension?

Also, is there more pasta in an arch/peak or a flat beam?
 
I believe pasta would be stronger in tension, but weak in compression.
 
Oh, one more thing to think about: if you take a flat noodle (e.g. linguini) is it stronger with "edge" vertical or the "flat"?

PS, I am not 100% sure about pasta, but most brittle materials are weak in tension and strong in compression
 
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