If the planned personal residence „Glass House“ in Osaka City is completed, it will become the first case in Japan where all the main building materials of the building use glass.
The two cuboids of the 4th and 2nd layers are respectively carried on the glass-covered hall. Although the upper part of the living room is of the S structure, the steel hall is not used in the foyer on the first floor. This part uses a structure that is only supported by glass wall columns.
The owner’s request for the designer’s fullness is “to build an unprecedented new building”. “We submitted several design proposals to the owners, and the client selected the most difficult one. The owner’s determination was repeatedly confirmed when taking over the project. Because of all aspects of the building design, it’s troublesome if you don’t do it in the middle.”
Since the owner’s idea has been fixed, we found Arup (Japan) Engineering Consulting Co., Ltd. and Japan Plate Glass Glass Co., Ltd. to start the structural discussion. After repeated trials, the construction plan is getting better and better. Mainly solved two major problems. One is the strength of the glass, and the other is the fire problem. After solving these two problems, the Laminated insulated glass wall column was decided to adopt the following structure:
First, an earthquake-proof layer is placed under the ground floor (reinforced concrete) on the first floor to reduce the horizontal force during the earthquake. The wall columns standing on the ground surface are supported by two sets of double-layer composite glass (four layers in total), and the outer side is covered with fire-resistant glass. Fire-resistant glass only acts as a „refractory cover“ and does not bear weight. In order to share the load, the glass wall column and the surface and the wall column and the upper steel structure are filled with filler material.
The double glazing, which was originally considered as a structure, was made of tempered glass, but was finally changed to float glass in order to reduce the cost and avoid the risk of natural breakage. The representative of Arup Japan’s Hikone Mau said: “There is enough margin for strength, and if one of the layers is broken, there are three other supporting buildings.”