Single-family Residential House
Client / Collaborator
Arketip Architecture
Sector
Architecture, Résidentiel
Location
Private
Services
Relevé LiDAR, Relevé par drone, Dessins CAD
Mandate
As part of this residential project, we were commissioned to produce a complete and accurate digital twin of an existing single-family home. The main objective was to accurately document the current state of the building and its grounds in order to priduce detailed CAD sections, plans, and elevations that could be used directly by the professionals involved in the project. Geometric accuracy was a key issue in ensuring consistency between the built reality and the technical documents produced.
Mandate
As part of this residential project, we were commissioned to produce a complete and accurate digital twin of an existing single-family home. The main objective was to accurately document the current state of the building and its grounds in order to priduce detailed CAD sections, plans, and elevations that could be used directly by the professionals involved in the project. Geometric accuracy was a key issue in ensuring consistency between the built reality and the technical documents produced.
Proposition
In order to guarantee a high level of accuracy and perfect consistency between the interior, exterior, and terrain, we have implemented our usual hybrid methodology, structured around a primary control network.
GNSS georeferencing
We measure high-precision GNSS georeferenced reference points over several periods in order to establish a robust anchor to the project's coordinate system. This step ensures a stable reference for all acquisitions.
Primary control network
We set up a control grid using a total station to obtain a millimeter-level precise framework and a direct link between all technologies. This network serves as the "ground truth" for checking consistency and limiting drift.
Mobile LiDAR (SLAM) indoors and outdoors
We perform SLAM mobile LiDAR scanning to efficiently capture the interior, circulation areas, as well as outdoor areas and terrain, while ensuring complete and continuous coverage. Trajectories and point clouds are linked to the control network to maintain overall accuracy.
Drone for roofing
We use a drone to document roofs and areas that are difficult to access from the ground, ensuring geometric continuity with the rest of the survey. The data is integrated and controlled from the control network.
Deliverables
High-density point cloud in colour
We deliver a dense and accurate point cloud covering the interior, exterior, and terrain. The point cloud is linked to the control network to ensure consistent geometry between all parts of the building.
Quality report
We provide a quality report that documents the chain of control and data validity, including georeferencing statistics, primary network residuals, and checkshots.
CAD plans and elevations
We produce detailed CAD plans and elevations from the digital twin, with geometry that can be used for coordination and documentation. Deliverables are structured for easy reading, verification, and integration into workflows.
Sections and Cross-Sections
We generate sections and cross-sections from 3D data to support design decisions and technical documentation preparation. Sections are established on a measured and controlled basis to reduce ambiguity and speed up production.
