The architect Renzo Piano designed a glazed dome for the textile company
„Peek & Cloppenburg“. It comprises an imbricated skin consisting of
6,800 individual glass panes. The five-storey department store in the
inner-city Cologne is entirely wrapped into the free-formed façade
shell. The vertically arranged trusses of wood slats and the
horizontally running facade tubes are linked to the shell structure by
diagonally stretching cables. The number of wood slats are graded from
floor to floor according to the strain. The trusses of wood slats made
of Siberian larch were completely prefabricated. Supporting the shell
structure on just a few rigid positions of the carcass enables an almost
complete isolation from distortion forces. On the forth floor the
façade shell is attached by consoles. In order to maintain the
impressive effect of the facade also inside, the ceilings do not touch
the glass skin.