The construction industry is rapidly integrating current technology and new construction techniques to increase productivity and efficiency in construction operations. Quality control and progress tracking are labour-intensive and time-consuming operations. Several surface waviness assessment methods have been created to alleviate the drawbacks of one assessment method over the other, focusing on measuring the quality of concrete slabs. Current methods of assessing waviness using one-dimensional (1D) survey lines produce inaccurate results and are prone to mistake. It does not reflect the actual condition of the entire floor concerning waviness. Two objectives of this study are to 1) evaluate the feasibility of using Terrestrial Laser Scanner for surface waviness assessment using slope analysis of different types of material and 2) propose a valuate pattern and image for different slope surface analyses. Leica RTC 360 laser scanner was used to scan the floor of the Multi-purpose Hall. The plan image of the floor slab and one of the 3D point clouds were recorded. Slope analysis shows a consistent pattern of slope distribution for floors with tiles. This is because the tile used concrete screed during installation to have a smooth surface during construction. The distribution of slope analysis of tile surface mostly between 0 to 0.0625% while the slope analysis slope variation of laminated floor between 0% - 0.5%. The distribution shows that floor variation with the laminated wood surface is high, especially between 0 to 0.5%. From the result obtained, this method has the benefit of combining rich 3D data from TLS for fast and reliable surface waviness assessment during construction. This technology has massive potential in the construction sector because of its capacity to record as-built conditions consistently, fast, and accurately.
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