Question: The elastomeric bearing pad shown below is capped with a steel plate that supports a bridge girder. Under maximum service ( allowable ) load, the

The elastomeric bearing pad shown below is capped with a steel plate that supports a bridge girder. Under maximum service (allowable) load, the girder exerts a 400kN force on the bearing.
Determine dimension b so that the factor of safety against bearing failure of the elastomeric pad is 1.5. Thermal expansion and contraction of the girder of +-5mm in the x-direction imposes shearing strain on the elastomeric pad. Determine the minimum thickness t so that the factor of safety for shear failure of the elastomeric pad is 1.5.
Material properties of the elastomeric pad:
The elastomeric bearing pad shown below is capped

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