SPACE MODULATOR No.90 New Wave Of Glass Architecture 2. Werner Sobek's world

A variety of measures were taken in the structural design of the Post Tower in order to create a single slender building made up of two connecting thin and light structures.
First, the main structure of each tower consists of two core concrete structures where the stairwells go and 19 columns that line the perimeter. These columns are made of CFT (concrete filled tubes) and only bear vertical load- they do not shoulder bend stress. Each column is extremely thin with a diameter of only Ø760mm in the ground levels and only Ø406mm in the upper portion of the tower.
In between these two towers are glass bridges at each level for traveling to and from each tower; however, these bridges do not connect the towers structurally. The structure is strengthened by a total of 10 X-shaped braces every nine levels that are hung within the core structure to counter lateral force. In addition, there are braces around the perimeter of the Facilities Floor, which is located at about the midway point of the tower on the 23rd level. These braces have exactly the same function as the flying buttresses of medieval gothic churches in that they diagonally connect the core structure to the columns. This is what made possible the structure of this tall and slender high-rise tower.

A structure that creates translucency

In order to make the tower look translucent, the floor structure of the tower must also be thin. This floor is only 28cm thick near the core and only 10cm thick near the ends. It is made up only of concrete slab that unifies the beams, floor and ceiling -- and the bottom surface of the floor is also the ceiling for the floor below.
For the structure of the glass bridges at each level which facilitate travel to and from each tower, one side consists of roller support and the bottom side is a steel frame beam curved like a convex lens with an entirely glass floor set on it. This lightness contributes greatly to the tower's translucency. The massive glass floor panels are translucent, and at night, when looked upon through the atrium from outside, the floors appear white in color and seem to be floating in the sky. These various ideas for structural elements and the technology that put these ideas into action enabled the twin towers to appear as if they are dissolving into the sky.

1.Skydome 2.Roof Terrace 3.Winter Garden 4.South façade 5.Sky Garden6.Foyer façade 1.North façade2.South façade 3.Stairs (RC Core)4.Ev.Hall (Glass floor) 5.Sky Garden6.Office(RC floor) 7.X-shaped braces8.Conference		A structure enabling the creation of slender twin towers A variety of measures were taken in the structural design of the Post Tower in order to create a single slender building made up of two connecting thin and light structures. First, the main structure of each tower consists of two core concrete structures where the stairwells go and 19 columns that line the perimeter. These columns are made of CFT (concrete filled tubes) and only bear vertical load- they do not shoulder bend stress. Each column is extremely thin with a diameter of only Ø760mm in the ground levels and only Ø406mm in the upper portion of the tower. In between these two towers are glass bridges at each level for traveling to and from each tower; however, these bridges do not connect the towers structurally. The structure is strengthened by a total of 10 X-shaped braces every nine levels that are hung within the core structure to counter lateral force. In addition, there are braces around the perimeter of the Facilities Floor, which is located at about the midway point of the tower on the 23rd level. These braces have exactly the same function as the flying buttresses of medieval gothic churches in that they diagonally connect the core structure to the columns. This is what made possible the structure of this tall and slender high-rise tower. A structure that creates translucency In order to make the tower look translucent, the floor structure of the tower must also be thin. This floor is only 28cm thick near the core and only 10cm thick near the ends. It is made up only of concrete slab that unifies the beams, floor and ceiling -- and the bottom surface of the floor is also the ceiling for the floor below. For the structure of the glass bridges at each level which facilitate travel to and from each tower, one side consists of roller support and the bottom side is a steel frame beam curved like a convex lens with an entirely glass floor set on it. This lightness contributes greatly to the tower's translucency. The massive glass floor panels are translucent, and at night, when looked upon through the atrium from outside, the floors appear white in color and seem to be floating in the sky. These various ideas for structural elements and the technology that put these ideas into action enabled the twin towers to appear as if they are dissolving into the sky.
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