Extruded Triangular Hollow Profile – Samples Box

For the construction of the dome of Munich’s iconic shopping centre Hertie, we were asked to produce a hot extruded isosceles triangle-shaped hollow profiles. This installation is an example of postwar modernist architecture, featuring a glass dome that allows natural light to flood the interior spaces and creating a sense of openness within the building that serves as a shopping mall.
The dome, designed by architecture firm Heine + Prof. Breuer and built by Gartner, is composed of a latticework of glass and steel panels that give it an elegant, minimalist appearance.
A grid of special 130×60 mm triangular profiles produced by hot extrusion of carbon steel S 235 JR are used to support the glass panels that make up the dome.
Specifically, the profile is a solid triangle with a circular hole of 30 mm in diameter in its centre in order to lighten it. The shape and the overall mass are sufficient to support the weight of the dome and the design wind loads.
The heritage building is located in the heart of Munich, in front of the Central station and functions as shopping centre since its construction in 1905. It is one of the first shopping malls equipped with escalators in 1930. The great special feature of the building, is the dome, which when viewed from the inside is a true architectural jewel that allows visitors a total view of the Munich sky and at the same time a perfect fusion of the building with its surroundings.