The concrete will not pump if the cement is left out or even reduced significantly. The Crenosphere costs much less than any comparable building. The sale price is simply less. In other words the breakthrough in price is directly attributable to the breakthrough in technology. The technology is extremely simple.
Simplicity helps with safety.
In summary, The technology is available now to produce the largest clear span buildings in the world for a much reduced investment. The Crenosphere Dome will soon drive its own market to accomplish building feats that were not dreamed of in the past. A size comparison between the Payson Athletic Center, the Hildalgo Arena, a typical NBA arena like the Reunion Area in Dallas, the Super Dome in New Orleans, the Statue of Liberty, and a 1000 foot diameter Crenosphere. The Crenosphere's extraordinary size is due to a breakthrough technology that allows larger structures at an affordable cost. Model Crenosphere Airform .