A dramatic spiral concrete staircase is a feature of spectacular Dali Museum in Florida. In future such constructions may be able to be built entirely from concrete using carbon nanotube technology, without the need for reinforcing steel. This will e

A dramatic spiral concrete staircase is a feature of spectacular Dali Museum in Florida. In future such constructions may be able to be built entirely from concrete using carbon nanotube technology, without the need for reinforcing steel. This will enhance design flexibility and speed up the construction process.