Experimental Study of Possibilities for Developing a Building Information Model of a Laser-Scanned Physical Object

Abstract

The methodological approach when using a scanned physical object to build a building information model (BIM) is based on laser scanning technology and aims to create technical documentation of existing buildings, most often with the status of historically significant sites. The BIM technology can be used as an integral part for the creation of the documentation in the process of construction and of the new sites, as well as their administrative and managerial control in the process of their construction and operation. The essence of the experiment is to model space in a parametric three-dimensional model (BIM) in the ArchiCAD program, using a laser-scanned physical object (point cloud). The cloud obtained from the laser scan contains detailed spatial information, which is used in the basis of creation of a construction information model (BIM) and control during the development of the model. The laser-scanned physical object (point cloud) contains the same geometric information as the construction information model (BIM), but with a much smaller amount of data, the file size is visible - point cloud - 30.41 MB, BIM - 9.83 MB). The advantages of BIM over the point cloud is to give the ability to edit the model, to study the energy behavior of the model, to create construction and technical documentation of the scanned object, as well as to disclose the ability to fill in technical data and parameters based on the map and cadastral basis. By means of the density of the point cloud (parameter of the equipment used - laser scanner) of the scanned object, information is obtained and used with sufficient detail and accuracy about the physical data of the real object and this is the basis for the full and comprehensive content of BIM. Based on the sufficient detail created in the BIM for the physical object, it is possible for its combinability and its actual use in the real environment.