Lageplan, Maßstab 1:5000 Site plan, scale 1:5000
Licht. Die komplexe Gestalt des Innenraums ist ungeachtet seiner skulpturalen Qualität vor allem das Ergebnis einer präzisen Berechnung der Akustik. In den Faltungen der Wände und im Bodenaufbau des Saals sind neben den Beleuchtungsschienen Bassabsorber versteckt, während die offenporige Oberfläche des Leichtbetons einen absorbierenden Effekt auf mittlere Frequenzen erzielt. In die geneigte Bodenplatte sind neben Bewehrung und Verkabelung Lüftungsleitungen eingelegt. Es blieb gerade noch ausreichend Platz für die Befestigung der Stahlschwerter, die die filigranen Gitterschalen der Stühle scheinbar über dem Boden schweben lassen. BF The concert hall in Blaibach, recently opened and centrepiece of various urban design measures aimed at revitalizing the town centre, looks like a monolith dropped from the sky, stuck at an angle within the newly designed pavement of the town square. Vertical joints between facade elements indicate tectonic intent to the expert eye, and the granite surface is reminiscent of the local stonecraft traditions. The inclined cube constitutes the conclusive response to the sloped construction site and the building’s function as a concert hall. The inclined floor of the closed box supports the rows of seats of the auditorium and covers the exterior stairs of corresponding width that lead from the town square to the underside of the cube. This is where the foyer and its auxiliary rooms is situated, providing ground level access to the garden in the rear of the building. Visitors are guided past the wardrobe and bar, around the auditorium, and finally into its interior. The atmosphere of the concert hall is characterized by the exposed concrete surfaces of the walls and ceiling, structured into horizontal bands. The texture of the concrete extends beyond many of these “folds” and emphasizes the appearance of a monolithically cast space. It is illuminated by indirect light provided by hidden LED bands along the underside of the tilted concrete surfaces.
Despite its sculptural quality, the complex form of the interior is most of all the result of the precise calculation of acoustic properties. Aside from lighting tracks, bass absorbers are hidden within the folds of the walls and the floor of the auditorium. The porous surface of the lightweight concrete can also absorb mid-range frequencies. The inclined floor slab features reinforcement, electrical wiring and ventilation ducts. Just enough space remained to connect the steel cantilevers that let the filigree lattice shell seats seemingly float above the floor.
Schnitt, Grundriss Maßstab 1:400 1 Eingang 2 Musiker 3 Garderobe 4 Bar 5 Bühne Section, floor plan scale 1:400 1 Entrance 2 Musicians 3 Wardrobe 4 Bar 5 Stage
aa
4
a
3
5
a
1 2
∂structure 01/15
projekt und prozess 39