Dr. Natterer-Gasse

BCI was commissioned to carry out the structural design and detailing of the “Dr.-Natterer-Gasse 2–4” residential complex. In close coordination between the contractor, the building physics consultant and the structural engineers, high-capacity precast connections were developed to realise the demanding façade construction. Involving the structural engineer in the early preliminary design stages made it possible to address the specific requirements of social housing from the outset.

The residential complex comprises a basement, a ground floor and 9 upper floors with a total of 115 apartments.

The main load-bearing structure is reinforced concrete. The basement and ground floor were built in cast-in-place concrete. On the upper floors, semi-precast elements (double walls and semi-precast lattice-girder floor slabs) were used wherever structurally possible. The balconies on both the street and courtyard sides were built as precast elements. In addition, an underground car park with 74 parking spaces was built.

Right at the start of the construction phase, the use of semi-precast elements on the upper floors was evaluated together with the client and the contractor and incorporated into the design. As a result, considerably less formwork and scaffolding had to be kept on site – a major advantage on this confined urban infill site.