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No, we are testing each and every production pad - not just a few test pads to failure. Every pad tested is to be installed in the bridge. As I understand it, the Design Engineer on the project expects a 5.25 inch displacement in case of a seismic event. Doesn't the displacement seem large for a...

We have some Steel Laminated Elastomeric Bearings to be used on a bridge for both thermal movement and seismic isolation. The testing requirements for the bearings states that each bearing shall be shear tested for a displacement of 5.25 inches. The laminated bearings are only 4.025 inches total...

Does anyone know of any reference or guide material that will help in the design of elastomeric bridge bearings using AASHTO Method B? There is a wealth of information on Method A but we cannot find anything to help us design these bearings using Method B. An Owner is insisting that we use...

I am trying to get information on the theory, design, testing and common manufacturing practices of laminated and non-laminated Elastomeric Bridge Bearings. Does anyone know of any good reference material, etc. for these subjects? Is there any information available on their proper application...

[b]Does anyone know of any literature on the design of base plates for circular columns? We are particularly interested in the calculation of the thickness required for these plates when the width and length is known.