The A1 Dishforth to Leeming Improvement Scheme involved upgrading 22 kilometers of the 1950’s era roadway to improve safety, reduce accidents, and expand capacity. The project required processing and interpreting paper legacy data comprised of over 900 exploratory boreholes and test pits from 10 different investigations conducted during prior ad hoc improvements, and incorporating 500 additional boreholes from the current investigation. To store, analyze, and model the data, optimize the ground investigation, and deliver a detailed design for improvements, AECOM needed flexible, interoperable software tools.
AECOM created electronic files from the paper records, imported the files into Bentley’s gINT, and added the additional 500 exploratory boreholes from the current scheme-specific ground investigation to build a central project database. The gINT database enabled AECOM to retrieve data relating to any exploratory hole in a single click, visualize geological data in graphical format, and generate geological sections. The 3D models from Bentley’s MXROAD were combined with gINT data in sections and profiles help the engineers and environmental specialist visually interpret existing ground conditions and aid in the design of the vertical geometry. Using Bentley’s integrated tools enabled ACEOM to accurately assess ground constraints, and geotechnical and geoenvironmental risk.
Having over 50 years of ground investigation data in a central database using gINT was invaluable to AECOM. The visualization and analysis of the legacy data optimized requirements of the scheme specific ground investigation. gINT saved up to six months (800-1,000 man-hours) in manual drafting time by enabling AECOM to produce geological sections in seconds rather than hours. Integrating the gINT sections with MXROAD terrain models yielded significant time and cost saving benefits throughout the project. Implementing an integrated design approach maximized use of the existing infrastructure and ensured buildability, while maintaining traffic flows on the existing A1 during construction.
Using gINT to create a central database comprised of data relating to over 1400 exploratory holes from prior and current ground investigations enabled AECOM to easily manipulate data and access information in a single click. gINT provided AECOM with graphical outputs to visualize the geological data, customized reports to plot a variety of geotechnical parameters, and the ability to generate geological sections for integration with 3D models in MXROAD.