When a new development is required in a built up area, it is essential to survey the sites surrounding context. This enables analysis of the other buildings fenestrations to help realise the impact the new development will have on it’s neighbours Rights to Light. We analyse our point cloud data collected by our laser scanners directly in Autodesk Revit. By using the point cloud data in Revit we can quickly build the model to the required tolerance by cutting slices through the data and the model simultaneously to check the accuracy.

Generally Rights to light models are quite low in detail and generally are only populated by external façades and features. The main requests we have are to capture and model door and window positions within the walls, main roof features such as Chimneys, dormers and roof lights. Building crowning, balconies and external fire escapes are also regularly required at a higher level of detail. Of course even more detail can be modelled if required.

Mass Modelling in Revit for Helicopter flight path analysis
Example of the level of detail that can be achieved on a rights to light 3D model.

We can collect a huge amount of external data in a very short amount of time, due to the nature of laser scanning and it’s rapid data collection, we have been able to collect surrounding context and street elevation data for large developments in a single day, this is massively efficient when compared to traditional surveying techniques.