STUVA is an independent non profit research institution dealing with fundamental and structural investigations in all fields of underground construction as well as urban and long-distance landborn transportation for more than 45 years. Fields of activities include design, planning, construction and operation of underground facilities for metro, railway and road transport. Owing to their wide-ranging experience and knowledge gained from many years of research work, STUVA is also consulted for many object-related analyses and expert reports at home and abroad.