A challenging project, due to the very narrow underground culvert, just 900mm in places. We undertook a 3D laser scan below ground to capture a point cloud, and geo-referenced the data to OSGM15. We also undertook a basic topographic survey above ground, comprising data collected using a SX10 total station and multiple UAV surveys. By combining the datasets, we created one homogeneous 3D deliverable, providing the client with a complete, integrated record of the area.
