Stadio Renzo Barbera

The survey operations were carried out across multiple sessions covering the entire stadium, specifically between 07.12.2023 and 20.01.2024.

The work was carried out using a high-precision Leica BLK360 laser scanner, positioned both inside and outside the structure. The combination of laser scanner and drone proved essential for this project: the drone was used to obtain an orthophoto of the stadium, while the laser scanner allowed for accurate and detailed capture of both internal and external spaces.

In the first phase, the internal areas of the main grandstand were scanned. Subsequently, for the survey of the external areas, ground targets were positioned and all necessary points were tracked via GPS to ensure correct georeferencing of the point cloud. Flights were carried out using a DJI Phantom 4 Pro drone, equipped with a 21-megapixel Sony Exmor camera and aspherical lens.

For ground control points and fiducial targets, a latest-generation GNSS receiver was used (Stonex S700A), capable of tracking 6 constellations and up to 700 simultaneous channels. The instrument also features aRTK technology, which maintains RTK correction even in the absence of a network signal. The drone is equipped with obstacle avoidance sensors and maintains a flight altitude consistent with the required level of precision.

The laser scanner was mounted on a 6-metre Manfrotto tripod, both to ensure greater stability and mobility during operations, and to guarantee complete and uniform coverage of the field of view.

All of the above was essential for the overall data acquisition, aimed at producing the following outputs in 2D vector format DXF/DWG.

A total of 1,871 scans were carried out, registered using 2,716 links to create a rigid network and minimise cumulative error. The entire process generated a combined model of approximately 7,864,716,934 points.

The acquired data was processed to generate a high-resolution point cloud faithfully representing the geometry of the stadium, enabling the creation of a complete and accurate BIM model of the structure. Given the nature of the survey and the use of latest-generation technology, we consider the final deliverable to be of excellent quality and characterised by a very high level of precision. The level of detail provides a solid and reliable foundation for any future design and facility management decisions relating to the stadium.