Comparative analysis of the effectiveness of methods for evaluating completed construction work using a point cloud

The large-scale use of digital capabilities of laser scanning technology at the stages of the life cycle of a construction facility is limited by a number of reasons, among which it is possible to note the lack of technological methods for processing laser scanning results with the subsequent transformation of the resulting point cloud into a digital executive model. The article considers the foreign and domestic experience of practical use of point clouds at the stage of construction of a construction object, with the possibility of verifying the volume of completed work based on a digital information model. Based on the results of a comparative analysis using the example of the load-bearing skeleton of a building made in the executive and design information models, a general disadvantage of known methods for creating and determining the volume of work performed based on point clouds was identified. The article proposes a solution that eliminates the discovered flaw. The advantages of the proposed method are shown, in comparison with the known ones, using the example of determining the volume of a monolithic reinforced concrete wall of a civil building. A discrepancy was revealed in the assessment of the completed volumes of the structure obtained using various methods. The proposed method of calculating volumes using a point cloud makes it possible to increase the transparency of management at the stages of the life cycle of a construction facility, ensures a more rational distribution of material and labor resources, improves the quality of construction control, as well as the reliability of executive documentation.

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