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|What is the most important shape?
|Why is the triangle a better shape?
|It supports the weight better.
|Why not the square?
|You can use a square but you need a crossbar.
|Why the triangle?
|The load on a triangle is on the point. The point directs the weight down the sides into the ground.
|Steel,Wood,Stone,Concrete, and Reinforced Concrete
|What material is the best?
|It depends. If you want a short bridge it is Stone or Wood. If it is longer. Steel, Concrete, and Reinforced Concrete.
|What types of bridges are there?
|There are the Beam, Truss, Cantilever, Arch, Tied-Arch, Suspension, and the Cable-Stayed Bridges.
|What is the best bridge
|That also depends. If short the Beam, Arch, Tied-Arch, or the Cantilever. If long the Truss, Suspension, or the Cable-Stayed
|Why is the bridge the best bridge?
|Well that is hard to answer. It all depends.
|What is a bridge?
|A bridge is a structure that spans a gap between the two sides of the gap.