Abridge girder is supported by a short steel block anchored to the concrete pier. The top of the block is slightly rounded to allow rotation. What is a reasonable idealization of the support? Draw the...

Abridge girder is supported by a short steel block anchored to the concrete pier. The top of the block is slightly rounded to allow rotation.

What is a reasonable idealization of the support? Draw the idealization in an elevation view that matches the photo.