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Imagine two 900 triangles back to back with their bases horizontal making a straight line.

The bases are half of the bridge; one of the two sides is supporting the weight of the bridge the other is anchored to a solid point. The weight of the bridge is pulling the apexes of the two back to back triangles downwards; these two vertical sides of the triangles are the supporting column at one end of the bridge. Now imagine a mirror image of what I have described and you will see a suspension bridge.

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18y ago

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