Here are some pictures that cover the garage construction from A to Z:

Removing topsoil.

Digging ditch for frost wall.

Getting ready to pour footings.

Here they are.

Putting up forms for the frost-wall.

The result.

Back-filling frost-wall

Frost wall done.

Putting forms in the cellar hole.

Re-bar installed and forms getting put in place.

Wall forms up and ready.

Here is the concrete.

One of the men putting the anchor bolts in the wall.

Walls are done; getting the floor ready for concrete.

Covering drainage pipe with 2" crushed stone.

Here is how they did it.

A few days later. Ready for concrete.

The steel beams are here!

Pouring the floor.

Removing steel beams from truck.

Getting close.

Putting steel decking on steel beams.

Pouring the floor.

Before......

...after.