Tsz Hang Lee1, ChaochengfengGao2 and Chan Chun Hong

1) BIM Engineer, Summit Technology (Hong Kong) Limited, Hong Kong.
2) BIM Engineer, Summit Technology (Hong Kong) Limited, Hong Kong.
3) Director, Summit Technology (Hong Kong) Limited, Hong Kong.

Abstract: BIM is a growing industry. More and more developers, architects and engineers are seeing its potential in reducing construction cost and time. Having earlier BIM involvement is very encouraging for this field’s development, but what of property owners who wish to enforce BIM after project completion? This is notably challenging since as-built information are often misleading. As-built information are well-known to differ from reality, especially for building services. For older buildings, the situation may be more strenuous, as such projects lack CAD drawings, and their drawings are often crudely drawn and stored. Laser scanning is often suggested as a solution to the previously stated challenges. Laser scanners are used to capture 3D geometric data of the project. Such data are registered and stored in a point cloud, which then can be viewed and assisted in the modelling process. The authors of this paper recently partook in a project that relied on laser scanning to fill in missing information. This paper will first walk through the process the authors experienced in utilizing laser scan. Second, this paper will examine modelling with laser scan, and explore the benefits of having a laser scan, the challenges of using the laser scan and the complications that not even laser scan can resolve.

Keywords: BIM, Facility Management, Laser Scanning, Point Cloud

Bibliographical Reference:
Tsz Hang Lee, Chaochengfeng Gao and Chan Chun Hong. “LASER SCANNING TO BIM – APPLICATION OF POINT CLOUDFOR MODELLING.” In Proceedings of International Conference on Civil and Building Engineering Informatics (ICCBEI 2015), 111. Tokyo, Japan, 2015.