In the green surroundings of the Kattevennen in Genk, an extraordinary construction project recently came to life: an interactive walking route that takes visitors through our solar system. The eye-catcher is a detailed steel scale model of the solar system with a diameter of 12m and a height of 3m. The scale is composed of a 90 lasered flat steel elements that increasingly subdivide towards the top. These 5mm thick lasered fins follow the curve of a circular segment, are curved on site and bolted to 9 annular tubes. Twelve support fins provide additional rigidity and make the connection to the screw pile foundation. The lower rings, which cross the fins, are welded to the support fins; the upper ones are loose. The resulting frame is split by de-duplicating the fins and mechanically connecting them on site.The dimensions of the pieces are determined according to the dimensions of the galvanizing bath and transportation. An opening of 90 cm is provided for crawling into the bowl.

Minimal footprint thanks to steel screw piles

A crucial decision was the use of steel screw piles as foundations. The building permit required minimal impact on the forest environment. Screw piles are driven into the ground without earth movement or concrete, leaving the site virtually intact. Moreover, the structure can be completely removed in the future, after which the landscape can easily be restored to its original state. Thus, steel proves its flexibility within ecological and permit boundary conditions.