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Drones are used to monitor more efficiently the progress against the project programme and provide greater project certainty . Able to map sites 400 times faster than manual methods , drones collect data in large volumes and are often integrated with BIM systems to create highly accurate visual representations of project sites . According to a report by PwC , they could save the UK construction industry alone $ 4.65bn by 2030 , with the drone economy employing more than 600,000 . In the future , they will be able to harness machine learning to provide a microscopic level of detailed monitoring .

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