This is a great representation of a double precast concrete vault toilet installation. Each of the tanks act as the foundation and are set below grade. The building sets right on top of them. The vaults weigh 16,000lbs each and the building weighs 41,000lbs.
This installation of a double precast concrete vault toilet occurred in an area with very limited access. We had to put the parts on shorter trucks and trailers offsite, and turn them around with the crane once we unloaded.
This single precast concrete vault toilet building comes in two parts, top and bottom (and the vault is the third piect). To accomodate this scenario we had to stand up two cranes and put each piece on a truck and run back and forth because the section through the woods was to narrow for a trailer.