KfW WestarkadeEdit profile
The KfW Westarkade is one of the first high-rise office buildings worldwide that can be run on less than 100 KWh/m2 of primary energy per year. This 15-story extension to the KAN Banking Group's headquarters in Frankfurt completes an existing ensemble of buildings from the 70s, 80s and 90s. Situated in the city's West End, adjacent to the central Palmengarten park, it offers conference facilities as well as office space for some 700 people.
The volume of the 56 m tower is integrated into a cluster of existing office towers. The contours of the new building allow the skyline of the existing buildings to remain visible from Zeppelinallee, while not obstructing their view. At the same time the high-rise acts as an interface between two distinct urban spaces: while appearing as a slim slab towards the street, it presents a discreet backdrop to the landscape of the Palmengarten. The flowing form of the building's socle defines the edge of the street and picks up the eaves height of the existing North Arcade building.The facade is set back at ground level to create a protective arcade to the street, while the landscape of the Palmengarten is drawn seamlessly into the rear of the site to create a generous open space.
The new building extends and complements the existing ensemble in both materiality and color. The double-layered wind-pressurized facade has high insulation values and offers natural ventilation independent of the weather, as well as efficient solar protection. Radiant floor-slabs and geothermal heating help to further reduce energy consumption in the building.
Description by Sauerbruch Hutton