Custom shelves

I've been working on some custom shelves for a customer that has a pedal car collection.  If you don't know what a pedal car is, here is a picture of some of their's...

The new shelving is going in a room that was built on to the house specifically for the pedal cars.
For each shelf, we are locating and mounting cast iron pipe flanges directly onto studs and blocking, then cutting 1/2" pipe to thread into the flanges.  Next, we are mounting oak ledger boards to carry the back side of the shelves.  The shelves themselves are 3/4" oak plywood, and they are being wrapped with 1 1/2" solid oak face pieces with a dado on the back side to secure the shelf.  We are finishing it out by covering the pipes with custom solid oak pieces underneath.  Here's a pic of one of the first shelves - of course it's 13' in the air...