THE CONSTRUCTION SITE
The self-supporting warehouse, located adjacent to the headquarters, is located in the province of Bolzano, in the municipality of Cortaccia sulla Strada del Vino. The construction site is located in the former bed of the Adige River, which was reclaimed by Maria Theresa of Austria at the end of the 18th century in order to obtain land for agricultural use. This aspect had an important influence on the structural design of the foundation system, forcing the choice of a slab foundation, resting on drilled piles with a continuous helix, with a diameter of 40 centimetres and a length of 27 meters. The three hundred piles made are the roots of the forest above consisting of five hundred glulam columns, which support the shelving and the warehouse itself.
The architectural and compositional aspects recall the choices made for the existing headquarters, which are characterized by large windows and a significant presence of timber, used both for structures and for flooring and coverings. Fire safety requirements, however, have imposed different solutions for the automatic warehouse. For this reason, the new construction will be almost entirely covered in aluminium, while the current sloping windows will be replaced by high-quality three-dimensional coatings made of larch strips, recalling the internal timber structures.
The special feature of a self-supporting warehouse is that the shelves, which transfer the weights of the stored goods to the ground, also act as a load-bearing structure for the warehouse itself. The main challenge for such a structure is represented by the resistance to horizontal actions (earthquake and wind).
The warehouse is fitted with two independent bracing systems in the two directions: for the north-south direction (long side) twelve bracing towers consisting of a box section in LVL and glulam measuring 1 x 2.5 meters have been used. These are embedded in the foundation by means of plates pre-inserted in the poured concrete.
All the shelving is connected to the bracing towers to transfer the seismic forces onto them. In the east-west direction, the bracing system is constituted by the shelving itself, with the five hundred columns interlocked at the base and connected to each other only at the roof: the roof is constituted by a framework of glulam beams and CLT panels, which create a rigid diaphragm.
The main critical point of these structures is the deformability towards wind actions, which must be limited to allow the operation of the machines. In fact, the project includes a displacement at the top (at a height of 20 meters) of only 19 millimetres in the east-west direction and 12 in the north-south direction.