Here is the first layer of rebar for the floor.
Rebar continues up the walls to connect the walls to the floor. The white pipes are ventilation ducts.
Here the floor is ready for concrete with two layers of rebar, ducts and electrical conduits
A concrete pump was used to place the 120 tons of concrete required for the 12" thick floor. It was all placed in one day.
The first dome is placed, six more to go!