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Pietro Bologna

Pietro Bologna is an associate director in the London Civil, Structures, Bridges & Tunnels team with over 14 years’ experience in civil and geotechnical engineering through design and construction phases....

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Ben Gilson

Ben Gilson is an associate in the London Geotechnics team and has worked on major linear infrastructure projects, alongside energy, residential and commercial projects since joining Arup in 2010. As...

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Mission Possible, With the Right Tools

The mission: capturing 21 quarries in 60 days. Squeezed into that timeframe were planning and performing the UAV photogrammetry flights, editing the RAW images, processing the data, extracting the topography using Virtual Surveyor, and production of the orthophotos, Digital Surface Model (DSM), Digital Terrain Model (DTM) and contour maps for each site. The main client, a government institute, needed highly precise and reliable 3D models and maps fast, as well as data their engineers could work with in a CAD environment. “There was a lot of pressure because of the short timeline”, said Nuno Santos, owner and CEO of Aerisurvey, a Mangualde, Portugal-based company specialized in high-precision UAV surveying. Mapping 21 Quarries in 60 Days The mission was to capture 21 quarries in 60 days. Squeezed into that timeframe were planning and performing the UAV photogrammetry flights, editing the...

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