Studio Velocity Changes Ballance Of Tension To Maintain The Shape


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One large curved surface creates a variety of rooms with different ceiling heights depending on the place, and yet above it provides a softly wrapped space like a plate.

Sanno Office by Studio Velocity is a secure and open interior, suitable for dense residential areas with rooftop space that ensures moderate privacy. Creating curved surface demands material of polygonal structure while bending laminated wood and steel. Both of those methods are demanding in the meaning of time and effort while increasing the thickness of the slab. Therefore we turned to the idea of creating a curved surface from flat material with a very thin and flat cross-section while generating a curved surface by gravity and tension itself.


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In order to prevent the internal space from being overly dominated by structural principles, the tension material is cypress wood rather than wire. This has created a wooden structure interior space that is not much different from usual. Except for the very flat curved beams and the proportions of the pillars that do not seem to support the roof. Randomly arranged wooden tension materials softly define the space and are designed in parallel with the arrangement of furniture and the cohesion of the space. When a person resides on the roof, the tension applied to the lower vertical pillar gradually decreases, and it is designed so that compression is not applied until a maximum of 150 people (40 kg / ㎡) is reached. The rooftop payload and tensile tension keep the shape of the building constant while deducting from time to time.


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The nominal Young’s modulus of wood is determined by an average value obtained by destructive inspection of many similar materials, or by a very rough grade test (allocation according to strength) in a factory. Even if they have the same tree species and nominal Young’s modulus, since wood is a living thing, it has different properties and strengths, and the actual (each unique) wood strength cannot be known without destructive testing. Therefore, unlike steel aggregate and RC, it is not possible to precisely predict the behavior of wood by structural calculation, and it is designed with a large safety factor. That idea has already been adopted from the laminated wood manufacturing plant. In this plan, based on the individual data obtained by carrying a load test of about 1100 lamina, an array of lamina was designed and 12 “precision wood” were manufactured.


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INFORMATION

Photography with courtesy of Studio Velocity

http://www.studiovelocity.jp





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