Commerzbank Foster CB

7/28/2019 Commerzbank Foster CB

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Advanced Facade TechnologiesIgor Mitric

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Name of ProjectCommerzbank Tower, Frankfurt

Name of arch itect

Sir Norman FosterName of other engineers involvedArup and Krebs & Kiefer- structural engineering

J . Roger Preston with P&A Petterson Ahrens - mechanical engineering Schad & Hölzel - electrical engineering

Thomas Ende – Lighting Design

LocationFrankfurt, Germany, 1994 - 1997

Characterisitc valuesstory height: 2,75 m facade thickness: 8 mm of toughened glass,20 cm air space, 12 mm low-E coated insulatingglass.

employed material(s): reinforced concrete piles – as foundation Steel –main construction (As first building in Germany)Glass – as windows, Atrium, Sky Garden as cover

energy design concept

First so-called "ecological skyscraper" in the world because of new technology usedfor heating and cooling . “ green” skyscraper

Each floor has three wings, two of which serve as office space; the third forms part of one of the4-storey-high gardens. Trough this is possible optimal air flowing , because is always onegarden of building on ( weil es immer einen Garten auf der Winddruckseite gibt, durch den die Lufteinströmen kann, und einen auf der Windsogseite für den Abluftaustritt)

The inside atrium region has a height of 160 m (43 storeys) with a length of 17 m. It brings adaylight at inside spaces trough whole building. Also, for better controlling of air circulation, isAtrium at every 12 – stories separate trough glass flour in three units.In spiral form, nine sky gardens rise up the tower (three each facing eastwards, southwardsand westwards) The gardens provide the inner offices with plenty of daylight.; they create afeeling of openness and space and form part of the sophisticated system of natural ventilation.Facade - For substantial energy-saving and natural ventilation, the building is enclosed in a two-layer façade. The outer skin has slots through which fresh air is able to enter the cavity betweenthe layers.The 12 cm high air outlets and inlets are located above and below the outer facade.

The window of the inner façade, even those on the highest floors, may be opened, ensuring thatnatural ventilation is possible right up to the 50th floor. The windows on the atrium side can alsobe opened.

Climate contro l - The building is cooled by a water-filled chilled ceiling system instead of thenormal, problematic air-conditioning system. The rooms are heated by conventional convectors.Employees are able to control the temperature in their office individually within a given range.Ventilation - On roughly three-quarters of the days in a year, employees can regulate ventilationthemselves by opening or closing the windows individually. Only under extreme weatherconditions does the building management system activate the ventilation equipment.

usesd literature, sourcesScript – Facades, Internet




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Commerzbank Foster CB