Australian firm DeciBel Architecture has unveiled a design for a Melbourne skyscraper which, when completed, could become the tallest of its kind in the city.
The super-skinny Magic tower, which rises 330 metres from a triangular plot the size of a tennis court, would outstrip the Eureka tower, which stands 297.3 metres in height. Its design has been submitted and, if approved, could be constructed as soon as 2022.
According to Dylan Brady, founder of DeciBel Architecture, the shape of the tower would send its slenderness ratio “off the charts.” He said that the current skinniest tower is in New York City, which also appears to have a monopoly on slender buildings: Rafael Viñoly Architects built a 425-metre slender tower in downtown Manhattan while Meganom is planning to build a 305-metre residential building.
To go as tall as possible while fitting the dimensions of the narrow site, DeciBel Architecture included several rotations to the design of the Magic tower. Mr. Brady explained that skyscrapers need their centre of rotation to be as close to their centre mass as possible, and the triangular shape of the tower called for a significant amount of innovation and tuning.
He pointed out that wind is the leading consideration for any tall building, so the Magic tower has a series of open floors to allow wind to perforate and plants to grow. To detach laminar flows, the tower’s western end has been stepped while the eastern end has been tapered to reduce load along the edge. A new and innovative type of mass damper was placed near the top of the building to reduce the sway and secure the upper reaches via gravity.