Design Objects

Reciprocal Roof


Outdoor Covering Reutlingen Germany


The roof structure covers an outdoor seating area. Based on the principle of reciprocity, the structure cantilevers out from the wall without additional support. Geometric interlocking provides stiffness and, at the same time, introduces ornamental quality to the seemingly floating beams.

Design: Toni Kotnik
Structure: Patrick Ole Ohlbrock, ETH Zurich, Switzerland
Steelwork: Gebr. Gysi AG, Baar, Switzerland
Woodwork: Oliver Zgraggen, ETH Zurich, Switzerland