Residential Tower Loerrach

Architecture (collaborative project partners)
Moser Architekten, Lörrach/Germany
Wilhelm und Hovenbitzer und Partner Freie Architekten BDA, Lörrach/Germany

Planning time
2012 – 2015

Construction time
2014 – 2016

Services by Werner Sobek
Structural engineering (WP 1 – 6 in accordance with HOAI)

GFA
5,500 m²

Client
Wohnbau Lörrach, Lörrach/Germany

Awards
Hugo Häring Award 2017

‘Weitblick’, an 18-storey residential tower with an overall height of 57 m, sits right next to the Swiss border on the southern approach to the city of Lörrach. One of the slender tower’s defining features is its parallelogram ground plan (19 m x 13 m). The building consists of a steel reinforced concrete construction. Only the heavily loaded intermediate supports have been implemented as composite columns. The extensively projecting balcony slabs were connected to the floor slabs via Isokorb elements to allow thermal separation. The slender tower itself is braced with an eccentrically positioned service core. As the building is located in Earthquake Zone 3 (according to DIN 4149), in-depth investigations were required to provide proof of its stability. The entire tower sits on 41 large-diameter bored piles.