Introduction Earthworks constitute the initial and one of the most critical stages of any building investment. Mistakes in estimating the volume of earth masses at the preparatory stage lead to significant deviations in the investment budget. For this reason, MBT (Modern Building Team) successfully uses advanced surveying and IT technologies. The implementation of precise measurement procedu
res allows the risk of error to be minimised and the financial interests of the Investor to be optimally safeguarded. Site inventory and acquisition of spatial data The quantitative verification process of earthworks at MBT begins with a detailed geodetic inventory of the existing state. The basis for activities is the stabilisation of the survey control network and the execution of precise
measurements using satellite positioning systems (GNSS/GPS). In order to obtain the maximum density of measurement data, we use unmanned aerial vehicles (UAVs). Low-altitude photogrammetry enables the generation of an accurate point cloud that reflects the terrain shape with significantly higher resolution than traditional grid surveys. Data processing and digital terrain modelling (DTM) The
raw data acquired during photogrammetric flights is processed in specialist software, such as DJI Terra. The generated point cloud is then exported to the Trimble Business Center engineering environment. At this stage, MBT specialists create a digital terrain model (DTM) of the existing state. This model is then overlaid on the site development plan (PZT) and the architectural-construction design
prepared in a CAD environment. The spatial overlay of these two components enables the verification of the designed elevations against the actual elevations. Earth mass balance and cost optimisation The key outcome of the described process is a precise earth mass balance. The software generates accurate cross-sections and