Last modified: 2019-10-10
Abstract
Reconstruction and restoration of industrial buildings, historical and cultural heritage buildings is an important area worldwide. However, the most advanced digital technologies are rarely used in the area. Using at least a part of building information modeling (BIM) methodology or simply using 3D technologies to generate and further use digital information of historic buildings is a significant effort to preserve the heritage and retain its most valuable features.
The authors implemented two experimental projects. The first one - old equipment repair factory, located in Vilnius, Lithuania. Information models for both initial and refurbished building are prepared. Parameter object correlation with laser scanning data enabled creation of a virtual 3D model of the historic building. This detailed 3D model contains most of the information about the object and the elements of the object, such as used building materials, operating cost reduction schedules, energy consumption, visualization, drawings, cuts, etc.
As the next example of digital technology application, we would like to present "As-Built" 3D model creation of Sapieha Palace built in Baroque style in 1689-1691 in Vilnius, Lithuania. Research methods and tools - initial data collection by historical drawing analysis, manual measurement and photogrammetry methods. For initial data preparation were used the DJI Mavic Pro drone with a DJI FC220 digital camera with 3-axis stabilization system and a navigation system for positioning. For photo processing, Agisoft PhotoScan software was applied. After this, a cloud of points was combined with a sketch in the Revit software, and on the basis of this a 3D model was created.
Benefits of building information modeling are difficult to measure because different participants of a construction project expect different results from applying BIM. Some of benefits of BIM uses, such as preliminary/detailed visualization, review of structural solutions and alike can be used by all project participants. However, there are other special benefits of BIM uses, which are specific to stakeholders, for example, analysis of engineering system parameters. The main advantage of digital measurements is the ability to accurately measure hard-to-reach and sometimes invisible places, to detail large-scale or complex surfaces and objects with many details. This helps to solve complex cases where architectural manual measurements are not feasible, difficult to implement, or financially unreasonable. Using digital data can accurately determine the extent of defects and planned works, thus not only identifying and solving problems of heritage object, but also saving the customer's funds.