Domes are surfaces that curve in two directions. The most common domes spring from a circular base and for that we call them "circular domes" at Geometrica, even if their cross-section is not circular. So the term "circular dome" differentiates domes on a circular base from Freedomes® that spring from bases of other shapes.
Vaults are structures that span in one direction only, such as arches or longitudinal cylinders, also known as barrel vaults. Vault spans begin at around 40m and can reach over 100m.
The first integrated solid waste facility in the Middle East began operation near Mesaieed, Qatar, in October 2011. It uses a Geometrica Freedome® for its roof.
The great silver dome reflected in the nearby water looks surreal. For a long time, however, it seemed that it would never even become real, but remain only an imaginative architect's rendering for a waste-to-energy facility.