The control tower is an octagonal structure with its height of 36 m. The external shape of the tower rises through 25 m without any change. The wall thickness is 40 cm through the first 13,5 m height. But, the wall thichness decreases angularly from 40 cm to 30 cm on 5th floor and the wall thickness continues as 30 cm until the top floor. However; the external shape of it changes after 25 m height and widens outward. As it widens outward for 12° at 8th floor, this angle reaches 26° at 9th floor and 40° at 10th floor. In that project, as wall formwork, it was used Inteva system which consisted of standard components. For changeable dimensions, it became sufficient to change the formwork assembly through just several sections. Since the wall formwork widened outward after 8th floor, it started to operate as slab. Special climbing brackets were designed for that project. Although the brackets were fastened to the inclined walls, they created a horizontal working area thanks to adjusting components. Furthermore; due to the reason that the wall formwork functioned as slab, the concrete load occured was withstood by the brackets. With just a single formwork, various forms were obtained by changing the assembly.
