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Estimating excavation quantity for construction in a challenging terrain surface is quite complicate.Thus, modelling the natural terrain from survey data and excavation profile from excavation plan in GIS (Geographical Information System) helps to estimate the quantity of soil to be excavated and filled with better accuracy.Also, it is possible to visualize the exact 3D model of excavation profile with respect to the natural terrain.In this study, excavation quantity for an intake structure was estimated using ArcGIS Pro software.Triangulated Irregular network (TIN) was created for pre and post cut/fill scenarios using appropriate GIS tools.Surfaces were created using the TIN of same cell size for calculation.The Cut Fill tool of ArcGIS software calculates the volume using the formulae, Volume = (cell area)*Z, Where the cell area is the spatial resolution of the DEM used and Z is the difference in z value between the pixels of two surfaces at that location.This tool was used for volume calculations for excavation/filling.This method takes very less time and cost than any manual or software computations.This enables contractors to decide on the precise volume for costing.
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Kumar et al. (2023) studied this question.
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