We presented an observatory tower with a system of 9 ARCHES. Those arches are entangled, thereby supporting each other, to realize the most compact, efficient and stable structural system. At the same time, the spaces between arches are designed to be utilized as accommodating facilities, including Taiwan Observatory Tower, Museum of Taichung City Development, and Department of Urban Development office.
We have analyzed the arch formation to efficiently distribute the load – vertical and lateral. As shown in the diagrams below, the main arch, the tallest figure, supports the observation deck and is also supported by the several arches at the bottom part of the entire structure. We call this the “Multi-Arch.” This multi-arch concept is similar to tube structure because they prevent the effect of shear lag in the high-rise buildings.