Domes, in the form of huge rounded vaults made of reinforced concrete resting on the more and more technologically advanced structures of the second half of the 20th century, have become very popular ...

The one-piece rounded, steel-reinforced block of concrete that forms the hull ... The 1980 cost for building the dome was about $21 per square foot. Today’s cost is about $75 per square foot ...

The world’s largest unreinforced concrete dome, the Pantheon in Rome ... for more than 80 percent of all damaged reinforced concrete structures, incurring significant repair costs for countries ...