AUG- SEPT 2023CONSTRUCTIONTECHREVIEW.COM9structures underwater in zero visibility. We knew about beams and miscellaneous concrete debris underwater, but the USV has helped pinpoint their exact location for easy extraction. After we scanned the site with the USV, we input the data into a GPS enabled crane barge and removed up to 500- foot- long concrete wall sections. The USV was also able to locate an existing timber bulkhead that obstructed the location of the new pile foundation. Our team was able to use this information and adjust the new pile location without destroying the backlands structures. The USV also recorded data to determine quantities of slope protection needed.· At the Port Freeport Velasco Berth 8 project, for which With all marine projects, one of the big risks is the unknown of what lies below the water. The Unmanned Survey Vehicle helps in efficiently providing clarity to thisSarah Johnsonwe constructed 925 feet of berth extension, we scanned the mechanically dredged toe trench to confirm it is at the correct depth per our plan drawings. We've also used these scans to determine quantities of riprap needed for the toe trench to protect it from ship propellers. With all marine projects, one of the big risks is the unknown of what lies below the water. The USV helps our marine projects to efficiently provide clarity to this. We're able to quickly schedule hydrographic surveys of our projects and provide data within the same day. With a USV scan costing about ¼ of a conventional survey boat, the cost savings of the USV make scanning smaller areas and getting ahead of work easier.
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