Asahi Glass Co. has built the world’s first spiral glass staircase using a suspension structure, the company said Dec. 12.
On display at AGC studio in Tokyo, the transparent glass steps, suspended in spirals, look as if they are floating in the air.
While glass staircases are nothing new, many of them rely on glass plates at the sides of the steps to support the entire structure.
But by figuring out how to eliminate the side glass plates--something that has until now proved difficult for manufacturers--AGC has created suspended glass steps that stand unaided, enhancing the light transmission through the staircase.
According to AGC, the durability and safety of this structure have been tested and verified using a full-size model based on precise structural calculations.
To complete the airy effect, AGC’s Leoflex strengthened glass is used for the curved handrails of the staircase. This is the first time that the chemically strengthened specialty glass has been used as a building material, AGC said.
AGC studio is located in Kyobashi Soseikan Bldg., 2-5-18, Kyobashi, Chuo-ku, Tokyo. It is open from 10 a.m. to 6 p.m. on Saturdays, Tuesdays, Wednesdays and Thursdays, and from 10 a.m. to 7 p.m. on Fridays. The studio is closed on Sundays, Mondays, national holidays and year-end and New Year's holidays.
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