Multi-hinge
Multi-hinge (n.) The word “Multi-hinge” is derived from Peter Pearce’s patent1, “Multi-hinge node-less space frame”, which maximizes the hermetic enclosure of space frames, and minimizes thermal flexing. In 1987, designers of Biosphere 2 adopted this technology and hired Pearce as a façade consultant. An essential part of the Biosphere 2 was to maintain an environment separated from Biosphere 1, Earth itself. Therefore, Pearce developed the Multi-hinge system to reduce the small movements between the primary structure and its cladding to a minimum. Finally, the system was used in a double-layer for the two Biomes, and in a single layer for the Habitat and Lung Domes2. To some extent, Multi-hinge system accomplished the Biosphere 2 project by providing the world’s most airtight building. Unfortunately, for a variety of reasons, Biosphere 2 failed to prove the feasibility of a permanent manmade ecological system, and was largely dismissed by reporters and scientists as a “science fiction”. However, it did reveal the values and possibilities of creating a balance between biosphere and technosphere3. The invention and application of Multi-hinge system is a significant proof of the positive relationship between technology and ecology, although designers of Biosphere might not realize it.