The importance of an optimized building shell When Andreas Prehal and his partner, Helmut Poppe, started their office in the year 2000, they wanted to combine great architecture with sustainable buildings. And Poppe*Prehal has built many successful sustainable buildings, from family houses to distribution centers, and most recently, Metro Cash & Carry in St.Pölten, Austria. The Metro store in St. Pölten is a zero emissions building. Poppe*Prehal started with a wooden building shell. That shell is then optimized by thinking about every detail: from using the finest wooden materials in the structure to selecting windows and entrances that contribute to the building’s efficiency. Insulated Isodock dock levelers from ASSA ABLOY were the last part to complete the insulated building shell. Without insulated loading bays a great deal of heat and energy would have been lost every day during the loading and unloading of goods – so they were a critical addition.