hcv vienna

structural concept
along the existing buildings, a diaphragm wall or a bored pile wall of shallow depth is used. this is made possible by a corresponding staggering of the underground garage.

construction phases
first, the existing ground is excavated down to the level of the diaphragm wall to be constructed. then the diaphragm walls / bored pile walls are installed. depending on the soil conditions, high-pressure grouting along the existing buildings is also conceivable. continuation of the excavation horizon. installation of anchors for the “deep” diaphragm wall.
excavation to the level of the underground garage. the excavation pit could be created with a natural slope.
construction of the underground garage. if anchoring beneath the existing building is not possible, the excavation support on the side of the existing building could also be braced against the underground garage.
excavation of the remaining construction pit. construction of the remaining basement levels.

structural concept of the standard floor
the standard floors are constructed as flat slabs in reinforced concrete over a column grid of approx. 8m x 8m. the flat slabs are 26cm thick. the horizontal bracing of the building is provided by walls (fire walls along the existing buildings) and the stairwell cores.