Project and construction management
E2A Architekten Zürich
As part of the new construction project "The Flag", the existing building, a former bank building located at the corner of Bockenheimer Landstraße and Liebigstraße, was demolished. "The Flag" is an accommodation facility with 228 hotel rooms. With a total of eight upper floors, the new building is a high-rise and is classified as a special building.
The new building will be formed of two building wings, which will echo the street sale and urban design and volumetric aspects of the existing neighboring buildings.
The building wing on Bockenheimer Landstrasse takes over the outer building line and eaves height of the Allianz building in order to clarify the street space. The wing of the building on Liebigstrasse will be significantly lower than the one on Bockenheimer Landstrasse, creating a good transition to the smaller buildings on Liebigstrasse.
The two wings are arranged in such a way that a courtyard situation is formed at the rear of the building, which is shielded from the street activity. The courtyard is not passable and can be used by the users as a recreation zone.
The load-bearing structure of the building is largely prefabricated from precast and semi-prefabricated elements in the factory for an efficient and schedule-optimized construction phase; only the core zone, the basement levels and the girder-like corridor walls are made of in-situ concrete.
The facade, which is structured by reinforced concrete frames, runs around the entire building in a constant axial dimension. The facade elements are prefabricated in the general contractor's precast plant and, including window frames, are inserted on site and cast with the floor slabs. The pre-hung natural stone façade is then installed on site.
The high degree of prefabrication continues in the interior construction: The bathrooms of the guest rooms are already completely installed including all surfaces and furnishings in the shell.