Location: Bremen
Period: 2012 to 2013
Category: New construction | Shell construction
Client: Siedentopf Services GmbH
Architect: Hadi Teherani, Hamburg
The building is located in the Weserquartier of Überseestadt in Bremen. The site, directly on the Weser, is part of a large former port and industrial area that has been completely redeveloped. The office building projects over the Weser promenade from the second floor upwards, allowing an unobstructed panoramic view upstream and downstream thanks to an all-glass façade. A completely glazed transom rests on V‑shaped supports that extend over two storeys. It is intended to look like a container facing the Weser — and at the same time have a “floating character”.
The cantilevered structure with a total height of 24.68 m, a width of 20.70 m and a maximum length of 48.60 m is an office building that can be used flexibly.
The 7 office floors offer a total gross floor area of 5,974 m² above ground. The basement, which is partly used for storage and as an underground garage, has a gross floor area of 939 m².
The building project is a reinforced concrete skeleton construction with a curtain-type mullion-transom façade or box window façade. On the ground floor and 1st floor, the reinforced concrete columns are located on the outside as a framework of inclined columns. The part of the 2nd to 6th floors projecting towards the Weser is supported by inclined columns as steel composite columns. The central core is made of reinforced concrete.
As a further special feature, WQ1 is one of the first buildings in Bremen to receive DGNB Silver certification. This means that the environment and energy resources are protected in the long term.
Main quantities
4,100 m³ in-situ concrete
850 t reinforcement
12,600 m² system formwork
200 m³ KS masonry


