Freiburg, DE

Passive high-rise building

For the first time in world history, a high-rise building from the 1960s has been converted into a passive house in Freiburg, Germany. The façade, roof and basement were insulated, triple-glazed windows were installed, and the building technology was modernized. The Isokorb® T from Schöck supports the new balconies of 139 apartments. The statically loadable insulating element integrated into the wall panels reduces energy loss via thermal bridges to a minimum. The Schöck Isokorb® T type W for walls is incorporated into the wall slab as a load-bearing thermal insulation element and then cast with concrete. This component with 80 mm insulating material consists of at least three sub-elements: The lower, middle and upper parts. This allows it to be used flexibly for wall panels with a width of 150–250 mm and a height of 1.5–3.5 m. 

Four standard elements are available, equipped with reinforcement bars from 6 to 14 mm in diameter. They safely absorb the compressive, tensile, and shear forces and meet all static requirements. In this construction project, the Schöck Isokorb® T type W was adapted as a special design to the height of the balcony parapet of 1.0 m.

Architect

Dipl.-Ing. (FH) Roland Rombach, Kirchzarten

Project management

Freiburger Stadtbau GmbH, Freiburg

Structure

Dipl.-Ing. Wolfgang Feth, Freiburg