We want to install a wood fence on top of a 4", 3000 psi wire meshed concrete driveway. I want to hold the 4" posts up using base plates that are made of approximately 1/4" or thicker steel. The square base plate I thought would be about 10" X 10". And a welded on socket for the post to go into would be about 10 inches tall. A horizontal bolt would hold the post in place in the socket. I will anchor the plates to the concrete with 1/2" or larger bolts.
Does this set up sound ok? Will it eventually cause the fence to wobble side to side in the sockets? Would it possibly break the concrete out even though no posts will be near any edge. Do the base brackets sound ok?