The civil engineers Hans-Joachim Unland, Martin Pötter and Kai Buhl are the owners of the civil engineering firm Dr Ehlers – Unland, Beratende Ingenieure PartG mbB, based in Osnabrück. Our office has been in existence since 1954 and has worked on and realised a large number of com-plex structural and civil engineering projects over the decades. Our range of services covers all types of structures, from specialised civil engineering to structural engineering. We specialise in structural design using all common building materials. In the age of energy efficiency and sustainability, innovative construction methods such as serial construction with prefabricated elements or timber hybrid construction are also playing an increasingly important role in our team‘s day-to-day work.