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More than 30 years ago, in Austria, Dr. Gerhard Sauer founded a tunnelling consultancy. At that time, Dr. Sauer was researching the New Austrian Tunnelling Method (NATM) - also known as the Sequential Excavation Method (SEM) or Sprayed Concrete Lining (SCL) - alongside his colleagues and fellow NATM developers, Messrs Rabcewicz, Müller, and Pacher. The focus of his research was the application of NATM to multiple stacked tunnels in soft ground and urban situations.
The company soon opened subsidiaries in North America and the United Kingdom and began offering design and consulting services for tunnel projects around the globe. It has since become renowned as a worldwide leader in tunnel engineering.
As the firm has grown, so have the services it offers. Today the company offers the full range of design and construction services for NATM (SCL/SEM) tunnels, shafts and caverns, and Cut-and-Cover (C&C) structures. These services include initial consultation and feasibility studies, final design, supervision and construction management, tunnel inspection and condition surveys, rehabilitation, waterproofing design and inspection, settlement and deformation assessment and mining support services.
Since 1980 the company has designed and constructed highway and railway tunnels, underground stations and sewer, water and utility tunnels globally. We design tunnels for urban and rural areas and in any type of geology, including soft ground, mixed-face conditions and hard rock. The Dr. Sauer & Partners partnership was formed in 2011 and offers its customers unparalleled services, worldwide experience and an unmatched portfolio of tunnelling projects.
Quality results from recognizing interrelations and evaluating, categorizing and organizing one's surroundings. It requires constant and consequent thinking and staying alert. Quality is identification with one's own work.