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 made from recycled concrete whilst the ground and first floor are a solid wood construction.

The building’s roof is greened and a photovoltaics system provides energy. 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 glued wood products from the Hermagor, Sachsenburg and Stall locations were used. NORITEC Holzindustrie GmbH, located at the site of the HASSLACHER group in Stall im Mölltal, supplied 2200 m² of HASSLACHER ribbed panels, consisting of 220 m³ of cross laminated timber and 205 m³ of glued laminated timber. Using the so-called screw-clamp method, these were used to make 80 elements. Furthermore, 316 m³ of cross laminated timber (CLT) walls were produced. The Sachsenburg and Hermagor sites provided 435 m³ of glued laminated timber, some of it post-processed composite elements. 912 to of CO₂ were absorbed from the atmosphere by the wood mass during its growth.