These are Mutual Materials Architectural Concrete Slab Patio units. We installed this new patio in just over a week.
This project required excavation and leveling, so we rented a bobcat and removed 8 or 9 inches of topsoil. We then backfilled approximately 3″ of builders sand and another 3″ of a crushed brick sand mix. The substrate was leveled and compacted several times during that process. After the patio was set, we swept sand into the gaps to stabilize everything.
These pictures are from the construction phase.
Here are some pictures of the yard before we got started.