The Ministry of Economy, Trade, and Industry of Japan commissioned Noiz Architects to design their main pavilion for the Eco Products 2011 Expo located at Tokyo Big Site. In the spirit of the Expo theme, Noiz implemented an experimental structural and building system generated by energy optimization and customized fabrication. Total of three pavilions were designed as a theater space, a smart home, and a rooftop terrace to host demonstrations of innovative technology and products.
The pavilions were designed with a larger scope in mind, representing a portion of a city-scaled community. The forms of each pavilion were defined by their hypothetical use of solar-generative paint, as well as surrounding building condition and orientation to the sun to allow for maximum usage of solar power in any location/condition. A special program was written to generate the unique building-form based upon multiple parametric values such as maximum solar energy accumulation, site shape, building code, structure, surrounding condition, weather, latitude, and etc. Additionally, the areas between pavilions were designed to allow wind-flow for urban-scale ventilation and wind turbines can also be efficiently used to create additional energy. Entire cityscape could then be optimized to its maximum fluidity and efficiency. The shape and openings of the pavilion were also the result of sunlight/heat optimization as well as local natural ventilation in minimum amount of structure. A recent development in solar generative paint may soon allow the entire surface of a building to become a solar power generator, and form-defining parameters would soon be different from what they are now. This is an experimental prototype of how technological developments will continue to expend the possibility of “smart” architecture.The structure of the pavilions was formed by a matrix of triangular cells made by paper-thin steel plates. The plates were each laser-cut so that the fins of cells could be folded by hand along dashed cut lines and connected to each other by bolt. The entire design followed diverse parameter such as environment, structure and material size. Since the composition and the construction method is quite simple, we could make a real-time feedback loop through the environmental contexts, design and construction data. Each panel is composed of triangular surface and folding ribs which work as connecting device as well. An address code inscribed by laser cutter on each surface ensures simple and efficient assemblage. As this project is still a prototype, waterproofing and heat insulation is not included in the system. However, along with structure and cost efficiency, these can be reasonably integrated as parameters in the design/fabrication system and we are, in fact, working on the next generation of prototype with additional parameters.Due to the use of such thin steel and mapping system, the entire 3 pavilions were able to be created out of less than 1 ton of material (steel plate). They were shipped in boxes smaller than 2m x 1m x 1m, and constructed in a period of 36 hours. This means the system is not only effective on ecological aspects but also for emergency shelter due to its simple and adaptive design/fabrication system.