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A bird’s-eye view from Nest One

21.05.2021 | Uzbekistan
Currently under development in the Uzbek capital of Tashkent, we visit the site of the country’s first skyscraper and one of the tallest multifunctional buildings in central Asia.

Impressions

Settled between the fifth and third centuries BC, Tashkent has enjoyed a rich history including a strategic position on the Silk Road before evolving to become the fourth-largest city of the Soviet era behind Moscow, Leningrad and Kiev. In 2009, it celebrated 2,200 years of written history and just a decade later, commenced development of its first skyscraper and multipurpose building, designed to include apartments, offices and a hotel as part of the city’s wider renewal initiative.

Working with main contractor and architectural firm, Özgüven Tasarım Mimarlık İnş. San. ve Tic. A.Ş, Doka Turkey and Doka CC Highrise were appointed to design and execute the proposed formwork strategy, thanks to its overall concept and approach, which included a versatile series of technical products, services and support. In addition, the client was keen to work with a trusted company with a strong track record of delivery in high-rise in order to deliver its maiden tower project. Topping out at 266.50 metres, Nest One sits on a 14,779 m2 plot and includes 187,284 m2 of built-up area, eventually providing 56 storeys with uninterrupted views across the city.

Operating on a tight construction schedule, Doka needed to find a solution that made swift progress without compromising on safety or quality. In using a combination of the Xclimb60 Hydraulic Climbing System integrated with Frami Xlife Wall Formwork and the Xclimb60 Hydraulic Climbing Protection system, Doka was able to reach a rhythm of one storey every six days. In using this approach, not only did the tower benefit from precision development at each stage, it also meant less manpower requirement in moving formwork up the building, particularly to the upper storeys. Thanks to high recycling times of Frami Xlife, site material was kept to a minimum, meaning more space and a lower cost for the client. Where safety was concerned, Doka’s Xclimb60 Protection Screen ensured that site teams were safe on all floors, while also being shielded from inclement weather in the process. In addition, the screen’s hydraulic position also meant less demand for crane usage, again keeping costs to a minimum.

Commenting on the project, senior engineer and system manager Xclimb60, Christian Neumann, said, "I am particularly proud of the technical solution we implemented for the building core. With the help of climbing profiles, which were attached directly to the wall formwork, we succeeded in hydraulically implementing the formwork on the outside of the core, meaning it was unnecessary to temporarily lift and store the formwork while working on the ceiling."

Doka Turkey engineering group leader, Nazli Ödül Doğan, added, “Xclimb60 is a win for all everyone involved. Not only does its design ensure fast and efficient progress, but it helps to reduce the requirement for extensive site teams, while protecting those who remain on site from both falling objects and adverse weather.”

In support of the rapid progress, Doka’s project-based sales engineer acted as a constant bridge between site and Doka Turkey’s engineering offices, enabling fast responses to any technical issues. In total, 428.22m2 of column formwork, 889.48m2 of wall formwork and 3,480m2 of floor formwork were used in the delivery of this highly diverse project, which will soon herald a new era of luxurious living for its residents.

Speaking with Özgüven Tasarım’s Project Coordinator, Erkan Durusoy, “Doka’s solution on this project has provided us with significant time-savings, while providing a comprehensive level of technical and practical support both on site and remotely via its offices in Turkey. This was important with Nest One being our first high-rise project. We now consider Doka not only as a product and engineering supplier, but a solution-oriented partner on what is indisputably the most prestigious project in Uzbekistan.” At the time of writing, Nest One is anticipated to be complete by 2022.

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