In large and complex civil engineering projects, well-managed information enables easier and faster access to the required data when available. In the Architecture, Engineering and Construction (AEC) industry, professionals and data managers constantly seek to optimize the information management process to better collaborate in projects that include GIS & BIM integrated workflows. The publication of ISO 19650-1:2018 & ISO 19650-2:2018 (ISO 19650-1&2:2018) standards on best practices for information management, including BIM, was recognized as an opportunity to the digital organization of these processes. As a result, main BIM software vendors have started supporting ISO 19650-1&2:2018 in their platforms, and (non)-governmental organizations have started adopting them in their projects. However, the advancement in the field of GIS BIM integration and the tightly integrated workflows drew the attention towards the need for supporting ISO 19650-1&2:2018in Web GIS for web services. I3S web service is an example of an open OGC Community standard that allows the consumption of 3D GIS data and 3D GIS data converted from 3D BIM data in Web GIS. In this thesis, field analysis addresses the challenges and the role of the Web GIS platform in projects information management processes of the Hoogwaterbeschermingprogramma (HWBP) as a case study. Then, literature studies review ISO 19650-1&2:2018 in the context of the HWBP to highlight the need for a Common Data Environment (CDE) in the Web GIS platform to support ISO 19650-1&2:2018. Moreover, the review tackles the CDE components specified in Part-2 of ISO 19650-1&2:2018, such as metadata allocation. Finally, this thesis discussed the implementation of the CDE components for I3S web services in ArcGIS Online as a Web GIS platform. The novel contribution of this thesis is providing a contextual overview of ISO 19650-1&2:2018 standards in the project information management processes that include working with GIS & BIM data. Moreover, using the British national annex (BS EN ISO 19650-1&2), a flowchart was developed for the metadata allocation systems of information container workflows. Furthermore, the reference implementation discussed a variety of options to implement the metadata allocation components in Web GIS. The discussion provided a solution and PoC functionalities of the CDE components for managing I3S web services. The resulting solution on the CDE components can be utilized to configure CDE workflows and technical solutions to enable ISO 19650-1&2:2018 compliant workflowsin Web GIS.

The outcome of the project has been successful from the interpolation perspective, where the final results have shown major improvements over the original rasters, and a multitude of possible other interpolation methods have shown potential. In the end, the algorithm used to create the gridded DTM was based on Startin’s Laplace interpolation and for DSM a Python implementation of quadrant-based IDW was used. The Startin Laplace method gives statistically good results while running quickly on it’s Rust base, though using quite some memory. The quadrant-based IDW has proven to be the best way to interpolate results which include the buildings, creating crisp edges without too many artefacts. Fur-thermore, the introduction of a polygon water flattening step was essential to prevent no-data values where water bodies prevented for accurate interpolation. The long-shot goal of being able to process all the tiles for the Netherlands was missed by a lot, eventually choosing to interpolate a series of tiles neighboring Delft to create a contiguous result set. Zuid-Holland has therefore only been partially completed, whereas the expectation was to be able to complete this area with ease in three days. An initial overview of the comparison for a single tile in Rotterdam (37HN1), can be seen in Figure 1.3 for the DTM results and Figure 1.4 for the DSM results.