"Meeting the contract tolerance of 1/8-in. for vertical and horizontal alignment in embedded track construction is challenging and correcting an error after the concrete has been poured is very expensive," said Clay Collins, project manager for Balfour Beatty Rail on the Mid-City/Exposition Light Rail project in Los Angeles. "The Amberg system provides better quality control than traditional methods of embedded track construction by allowing us to load the entire design alignment directly on the trolley. We can now perform quick and very precise track adjustments before and during concrete pours with fewer people. The real-time output eliminates manual calculations by our surveyors and the as-built reporting capabilities provide a better deliverable to our clients."
A key component to a successful light rail project is a precise alignment of the track. This provides a smooth ride for customers while reducing wear and tear on the rolling stock, thus reducing overall maintenance cost to the owner. By utilizing the GRP trolley, track alignment can be achieved in a fraction of the time compared to traditional methods and at a much higher accuracy, Amberg points out. Contractors benefit from increased production and owners benefit from a higher quality build, which yields less long-term maintenance costs.
The GRP is a modular, easy-to-use trolley-based measurement system. Combined with the powerful Amberg Rail software suite, the system is used for a wide array of applications within both the freight and passenger rail industries. As-built acceptance surveys, track construction, real-time clearance analysis, 3D laser scanning and tamping surveys are just a few of the many applications supported by the GRP track measurement system.