So, why did 235 bullnose bricks come loose?
The process of building our 4 tier steps involved the use of cinder blocks, to create each step.
The holes in the cinder blocks should have been filled and a binding material, mortar, to affix the brick pavers, keeping them in place.
This is what I found. Exposed cinder blocks with no binding material.
The cinder blocks were filled with sand!
And, the sand was coated with a dusting of mortar, the binding adhesive.
So, what happens when the binding material is not installed correctly?
Like throwing flour on a pizza