Natural ventilation in Europe's tallest building—even with high pressure loads and suction loads
The Lakhta Center in St. Petersburg is a true skyscraper, with the point of the needle-shaped high-rise literally disappearing into the clouds on certain days. The new head office of the Russian energy company Gazprom is Europe's tallest building. At 462 metres, the Lakhta Center numbers among the world's tallest skyscrapers that uses natural ventilation through windows. From the beginning, the Lakhta Center was intended to become a global symbol for cutting-edge technology, environmentally friendly design and comfort. Due to its high energy efficiency, the finished building was also classified as a green building and awarded the platinum certificate of the LEED certification system (Leadership in Energy and Environmental Design).
An important contribution to this was made by the D+H solution for natural ventilation in a skyscraper. The selection of window drives taken into consideration for this was characterised by the enormous wind pressure and wind suction loads at great heights. The building has several atria, each of which spans two storeys. The D+H window drives installed in five of these atria can be opened and closed fully automatically depending on the weather. The drives in all sections of the building are controlled by the building management system. The result is a comfortable atmosphere in the rooms at all times, night and day.
The façade of the Lakhta Center is attached to slightly curved steel beams, which span across two storeys. By using pivot-hung sashes 1.2 metres tall and 93.8 centimetres wide, the skyscraper can be naturally ventilated through the façade. These windows have been equipped with 1240 D+H window drives and 1240 D+H lock drives. All lock drives have been integrated into the window profile. The lock drives take loads off the window drives and window hinges. This combination enables the wind loads to be managed even at great heights, and the windows remain securely open or closed. To ensure the required ventilation cross-section, the side-hung vent windows open 45 degrees inwards. D+H developed a rotatable bracket specifically for use in the Lakhta Center which would even have allowed an opening angle of up to 80 degrees if necessary.
Read more about this project in the "HIGH" part of the "Topics" section on our website.