Question

Q: Base on text given above explain the use of the rollers on one side of the bridge.​

Answer 1

Roller supports allows the bridge structure to expand and contract with temperature changes. The expansion forces could fracture the supports at the banks if the bridge structure was "locked" in place. Roller supports can also take the form of rubber bearings, rockers, or a set of gears which are designed to allow a limited amount of lateral movement.

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