Place: HLM, Genève
Suisse Architect: concept de Jean-Louis Chanéac
Client: Marcel Lachat
Program: bedroom
Date: december 1971 – one month

Supporting an "Insurrectional Architecture", and hoping for "a habitat for the majority", the architect Chanéac designs "parasitic sucking cells which are individual, evolutionary and mobile" and which are able to fix themselves to the façades of buildings. "This architecture will reflect life.
Amongst the materials most suitable for the creation of an insurrectional architecture are synthetic materials (laminates, resins, glass fibre reinforced polyester, foam, etc.). Precast elements (which can be rapidly assembled), plastic projections and inflatable structures are all highly suitable for use in the spontaneous architecture which we have forgotten about for too long." Developed as temporary and supplementary spaces, "parasitic cells are volumetric inhabitable elements which are mass-produced by industry or spontaneously built by individuals. They can be erected in a matter of hours on the terraces of buildings as a way of creating complementary inhabitable spaces." In 1960, Chanéac applied for a patent for these multifunctional plastic cells which could be produced in the factory, transported by road and assembled in two hours. In 1971, Marcel Lachat fixed a "pirate bubble" adapted from a sounding balloon in line with the ideas of Pascal Häusermann on the façade of an apartment block in Geneva. "The bubble projects itself aggressively onto the façade, achieving the required visual shock," commented Chanéac on this act of anarcho-architecture.

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