Question

what is penumatic shell

Answer 1

The third main group, called “liftingpneumatic formworks,” encompasses the systems in which the concrete or a cement matrix is applied onto a flat plate, which is subsequently transformed into a doubly curved shell. Examples are the systems invented by Bini or Nicholls

Answer 2

These are concrete shells with double curvature starting from an initially flat plate. During the transformation process, the concrete plate is lifted, and the elements are bent with the aid of a pneumatic formwork until the required curvature is reached.