The materials are the ones brining unity to the different volumes,. the stone is used for the mass of the volumes, this material which is brought of the direct environment, makes the volumes even more part of the hill. It also gives the volumes a sense of heaviness. A second material which is used is a light concrete, this concrete is merely used for the columns and canopy. Facade of auditorium LITERATURE THE ARCHIVE OF GERMAN
Section archive , Hall and Auditorium detailed section of the auditorium You can see that the exterior of the building shows 3 different ways of use of the column. They were used to create a canopy attached to the entrance building by putting them in-between the floor and ceiling.