In 1851 Paxton builds the Crystal Palace with a structure made by repeating wired elements, which shows a metallic skeleton inflated with air. A year later, Giffard blows up with a new air of different density an elastic aerostatic structure that inhabits the sky. The conception of the structure should go beyond its mathematical nature and merge with the seminal idea in a coherent way; as the structural soul of the future real work; as its spirit and meaning. We will introduce three avant-garde projects, where the structure is understood as the definer of their essence, the materialization of their Idea. The proposals, seen from their structural conception, are understood as concepts or as typo-logies, that is to say, the proto-“typical” solution for a given “logo” with an unknown air. These three avant-garde structures anticipate a contemporary architectural anatomy: A structure able to fly, light and paint the air.

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