This commercial building in Tokyo’s Ginza district is designed for Mikimoto， a company world famous for its pearl jewelry. The buildinghas a 17m x 14m rectangular plan， with nine stories above ground and one basement level. The lower level is used as a shop and offices forMikimoto and the upper floors are leased to tenants.
Our intention was to express the flow of structural forces as a design similar to the facade of “TOD’S Omotesando Building” so as to create an impressive surface that conveys a strong presence in its surroundings. Panels composed of steel plates (6-12mm in thickness)sandwiched together with studs and structural reinforcements were manufactured in a factory and conveyed to the construction site.After on-site erection and adjustment， they were welded together and 200mm of concrete was poured inside. Through this system， inwhich the steel plates are treated as an expendable formwork， it becomes possible to build a structure that is both extremely thin andstrong. Additionally， the non-directional planar structural system allows openings to be inserted freely.
The rounded triangular and rectangular openings scattered across the metallic coated facade， are inlayed into a triangulated pattern derived from the analysis of the tectonic force flow. An image of a brilliantly scintillating gem was embodied in the cityscape of Ginza.