This photo shows two things:

A standard module (6' x 2') that was constructed on the floor by my wife and I. Previously, my approach had been to build directly on the wall, a more tedious approach.

The second item is the ledger board on the wall suggested by my brother. This approach allows the connection to the concrete to be quot;aboutquot; right, and leaves the finish leveling to the much easier to adjust module to ledger board connection.