Multi-building 3D survey for hospitals, industry and local authorities
A 3D laser survey of a building in Switzerland takes on a whole new dimension when it concerns a hospital, an industrial site or an administrative complex.
These projects often involve several buildings, superimposed technical levels, extensive basements and significant operating constraints.
We have three LEICA BLK360 scanners and one LEICA RTC360 scanner. We can engage up to four teams simultaneously when the project requires it. This capability enables us to work on multi-building projects while maintaining a high production rate.
We organise each survey campaign with precision in order to respect the constraints of occupied buildings and the requirements of public contracts.
Industrialisation of 3D laser surveying and BIM production
Over time, we have structured our way of working. 3D laser surveying and BIM modelling are not based on a succession of isolated actions, but on a controlled process.
Each project begins with a clear strategy for its division. Zones are defined, levels planned and teams allocated. Point clouds are assembled according to precise protocols. Altimetry is checked before any modelling phase.
All our modelling, whether in REVIT or ARCHICAD, is based on a single template incorporating common families and uniform graphic standards. This common base guarantees consistency between projects and enables several modellers to work in parallel without any loss of quality.
Each modeller follows a defined set of specifications. They apply the structuring rules, respect the expected level of detail and organise the views according to shared conventions. This discipline ensures stable production, even on large-scale projects.
Quality control and reliability of digital models
The reliability of a 3D building survey in Switzerland depends as much on the accuracy of the scanner as on the rigour of the inspection.
We carry out an initial check as soon as the point cloud is assembled. We analyse the consistency of the stations, validate the altimetry and check for any drift.
During the modelling phase, we carry out intermediate checks. At the end of the project, we carry out a complete check of the BIM model. If necessary, we correct and recheck before delivery.
This process greatly reduces the risk of error and ensures the security of projects intended for major renovation, hospital conversions or public tenders.
Internal organisation and the digital workplace
For large-scale developments, technology alone is not enough. Internal organisation plays a decisive role.
We use a centralised management environment that brings together the tasks, documents and exchanges linked to each project. This digital workplace enables us to structure our work without making it more complex.
We plan the survey campaigns, coordinate the field teams, monitor the progress of the modelling and organise the control stages. Each project benefits from a clear framework, with defined responsibilities and identified validation points.
This organisation becomes essential when several teams are working in parallel or when several buildings need to be integrated into a common master file.
