3D LASER SCANNING /
SCAN TO BIM
Laser Scanning / Scan to BIM / Survey to BIM Laser scanning has been used in the geomatics industry for many years for building, topographical and archaeological surveys. Laser scanning is a powerful and versatile method of data capture. The raw point cloud data can be geo-referenced into existing control frameworks and used to carry out basic dimensional checks or to create 2D line work as well as detailed 3D models. The use of laser scanning has proved to have cost saving benefits on many projects. Large volumes of data can be collected rapidly and unobtrusively minimizing disruption to the site and eliminating return visits. The real key to a successful laser scan project is to use a team with the appropriate training and experience. Mollenhauer Group has been involved in laser scanning since 2003 and has the experience to interpret the point cloud to create a useful, usable and accurate deliverable. We exclusively use the Faro Focus 3D scanners to collect our point cloud data. Scan to BIM / Survey to BIM Survey to BIM is the process by which 3D survey data is used to create accurate BIM ready models of existing buildings and structures. Any type of survey data can be used in the process but the most common, and arguably useful, is point cloud data acquired using laser scanning – the process is commonly referred to as Scan to BIM. Mollenhauer have been providing survey to BIM services for over 7 years. Over the past 5 years our Geomatics group has tailored all training and development to providing surveys in Revit. We have worked on many successful projects across the globe. BIM Specification BIM projects are a collaborative process and good communication with the client right from the beginning is essential to manage expectations and ensure a successful outcome. A major part of this is a clear and unambiguous specification defining the level of detail required and what will and, possibly more importantly, what will not be included. There are of course limitations of the BIM software. As with most CAD packages, Revit is designed to model straight vertical walls and requires significant attention and adjustment when surveying surfaces that are irregular. So it is therefore critical that methods to correctly interpret and present structural elements which are out of horizontal or vertical alignment form an important part of the initial discussions. Attention also needs to be given to the amount of detail that has to be modelled and whether alternative survey presentation methods can be used and simply linked in to the Revit model. A significant advantage of laser scanning is that it captures a vast volume of data which can be archived and referred to in the future. Over the years we have developed our 3D products and services with our clients to provide useful and usable deliverables.