Question

based on the text given above explain the use of the roller on one side of the bridge.​

Answer 1

Explanation:

Roller supports mainly are used in truss bridge.This type of support is provided at one end of bridge spans.

Roller supports only resists perpendicular forces and they cannot resist parallel or horizontal forces and moment. It means, the roller support will move freely along the surface simply like a skate board.

The reason for providing roller support at one end is to allow contraction or expansion of bridge deck with respect to temperature differences in atmosphere.

If roller support is not provided then it will cause severe damage to the banks of bridge. But this horizontal force should be resisted by at least one support to provide stability so, roller support should be provided at one end only not at both ends

I hope this may help you

Answer 2

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