FROM LASER SCANNER SURVEY TO 3D BIM MODEL Chigi Palace, Rome (IT)
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PROJECT DESCRIPTION
KEYWORDS: Engineering | Heritage | BIM | Heron | 3D Mapping
The Chigi Palace is a historic building, in the heart of Rome, currently the seat of the Government of the Italian Republic. The entire building was taken over for the purpose of constructing a 3D BIM model aimed at energy redevelopment, therefore without the need for millimetric accuracy.
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« The survey with HERON was very useful for the creation of the BIM model. Simply walking through the rooms of the historic building, we quickly got an enormous amount of data, subsequently used by the customer for CAD modeling.»
Giorgio Dotti
Gexcel | Surveyor
NEEDS AND GOALS
- 3D survey of the historic building for energy efficiency
- Speed and confidentiality during the course of the survey
- Creation of a BIM model
The quick execution of the survey campaign was made possible thanks to the integration of several relevant methodologies, in particular, thanks to the real-time mobile acquisition made with HERON.
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| Fig.2_HERON during the Chigi courtyard survey | Fig 3. HERON point cloud 3D model integration |
HERON AC-1 MAIN BENEFITS
- Efficiency: saving time and money
- Effectiveness of the functions
- Accuracy of the final results
- Management of different data types (mobile and static scanners)
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| Fig.4_Zoller+Fröhlich laser Scanner 51010C "Sala dei mappamondi" static scan acquisition |
The survey phase with HERON took place in the internal and external regions of the building, for a duration of 3 days and a total of about 25.000 m², divided into 94 dynamic acquisitions with a resolution of about 2 cm. At the same time, 54 detailed scans (with an average resolution of 4 mm) were captured with Z+F static laser scanner, then georeferenced by classical topography.
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| Fig.5_HERON point cloud inserted into Chigi Palace BIM model |
Starting from the point clouds, we worked with special modelling software to obtain the 3D reconstruction of the building.
RESULTS
- Georeferenced point cloud
- 3D Model
- BIM modelling of the entire building
TECHNICAL DETAILS
- SURVEYING SYSTEM: HERON AC-1 - Zoller+Fröhlich 5010C
- SURVEYED AREA: 2.500 sqm
- SURVEYING TIME: 3 days, 25.000 m²
- PROCESSING SOFTWARE: HERON Desktop - JRC 3D Reconstructor - ArchiCAD
- DATA PROCESSING TIME: 1 month for the final result
ABOUT
CSG Palladio | www.csgpalladio.org
Polytechnic laboratory for companies and professionals requiring clear answers in the field of materials technology, structures, civil construction, industrial research and cultural heritage. The Client requested to Gexcel the rental with the operator of the HERON equipment for the data acquisition activities. The data processing and the final delivery were performed by the Client.
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