Photo Courtesy of University of Alberta Roving Pilot Trailing up to 200 meters behind a tunnel-boring machine as it moves through the earth, a surveying robotic total station computes the TBM's geospatial position to within 3-mm accuracy in real time. Related Links: New Alignment System for Tunneling Machines To Be Tested The Inventor's Upcoming Fiatech Presentation After more than six months of full-scale field testing on the construction of a 1,000-meter sewage tunnel, a geomatics-based survey guidance system for tunnel-boring machines shows promise for reducing interruptions in surveying while delivering real-time as-builts of the tunnel's interior."We can easily save 10%
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.