THE The Application of UAV Photogrammetry for Pile Eccentricity and Cut off Level s Inspections
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Abstract
The objective of this research is to apply unmanned aerial vehicle photogrammetry to inspect the eccentricity and cut-off levels of piles that has been hammered. Currently, construction management is continuously evolving to reduce time and human resources. The including digital data collection to ensuring that construction works appropriately to various specifications. The inspection of pile eccentricity relies on total station measurements which requires skilled surveyors and significant human resources. As from previous research has unmanned aerial vehicle in various construction activities such as progress monitoring, thematic mapping, etc. In this study, the inspection of pile eccentricity and cut-off levels using unmanned Aerial Vehicle photogrammetry was processed with Pix4Dmapper software, combined with ground control points used in surveying and design construction projects. This approach aimed to create a three-dimensional point cloud to inspect pile eccentricity and cut-off levels by comparing the results with data from total station measured and construction plans. The comparison results showed a horizontal eccentricity difference of ± 0.004 meters and a vertical cut-off levels difference of ± 0.050 meters. These outcomes demonstrate that the application of unmanned aerial vehicle photogrammetry for inspecting pile eccentricity and cut-off levels is accurate and feasible for practical use. Regarding the level value for application, it might need to be evaluated against the normal construction requirements for that project in order to determine its acceptability.
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