Wiener Linien has built a new campus to train its apprentices, in which sustainability and a low carbon footprint play a big role. Located in the main workshop in Vienna's Simmering district, Wiener Linien’s Apprentice Workshop 2.0 was constructed with sustainable materials, using an energy-efficient construction method. The basement floor is largely made from recycled concrete, whilst the ground and first floor were constructed using solid timber construction. The building is heated using an innovative geothermal heat exchanger.

The building’s roof is greened and a photovoltaic system installed on the roof provides environmentally friendly electricity. Machine halls and state-of-the-art workshops are located on the ground floor. Above it, modern training, laboratory and lecture rooms adorn the first floor. Open common rooms are supposed to promote exchange of ideas and knowledge.

Around 1,200 m³ of engineered wood products from the HASSLACHER group’s sites in Hermagor, Sachsenburg and Stall were used. NORITEC Holzindustrie GmbH, a company of the HASSLACHER group at its Stall im Mölltal site, produced 2,200 m² of HASSLACHER Rib Panels, consisting of 220 m³ of cross laminated timber and 205 m³ of glued laminated timber. Using the so-called screw-clamp bonding method, these were used to make 80 large-format elements. A gap-filling adhesive with a light-coloured glue line was used for this process. Furthermore, 316 m³ of cross laminated timber (CLT) walls were produced. The Sachsenburg and Hermagor sites provided 435 m³ of glued laminated timber, including partly block-bonded composite components with CNC machining.