"we are very pleased that a second hochhausentwurf from our office in berlin is to be implemented," said at the request of matthias sauerbruch. both buildings have pioneering nature. the refuseto was about ecological building in the city and the street is the public space of the subject. the new building will be the platzraum close and with the appropriate retail and find life. for the first time, directly on the alex, in this house, but also about 500 people live. coworking and office space to create additional jobs, so that in a house near a small town is housed. on the roof of the base construction which is largely intended for it is a semi public garden club, the internal center of the household and their guests will be. "

the design of the panel d3 at alexanderplatz is a combination of two separate but related buildings: a sockelbau, in its volume, its materiality and fassadenstruktur with nachbargebäuden (kaufhof etc.) corresponds and a high-rise on the di e already existing and planned construction in the alexanderstrasse responded.

the building is a part of electricity production

both components are according to the architecture in a combination of artificial stone / architekturbeton and glass. in the low rise building includes a „steinernes scaffold ", in colour and proportionality to the neighbors oriented, different functions, in this component are housed in six shot: apartments in sizes between 20 and 95 square meters the lower three floors are offered to the retail trade and the catering to the second floor, in addition coworking surfaces is provided. the large windows of the nutzbereiche are light textile sonnenschutzbehänge which house a summer ease give - and probably a preventive measure against hot summers caused by climate change will be. on the hochhausetagen are mainly housed office space, with each floor in up to three units of approximately 300 square meters, can be divided up. a feature is the so-called garden club "on the eighth floor, a part of public offer to the users of the office and coworking - land: on the roof of the base construction which is largely intended for a roof garden is created, with different offers to stay with. in the courtyard of the wohnteils is a spacious garden, the residents are available.
the facade of the tower building is equipped with photovoltaikeinheiten, so that the building some of its own electricity production. with the help of a kastenfensterkonstruktion will also allowed the building to ventilate naturally. the use of geothermal energy and grauwasserwärme should the concept on energy saving and carbon to prevent complete.(徳囯ASK电容器)