Before getting into the significance of BIM software in developing as-built models, I would like to through some light on the concept of reverse engineering and its importance in the Architecture, Engineering, and Construction industries. In the context of the construction industry, reverse engineering can be defined as the extraction of geometrical information from existing buildings or structures for the sake of reproducing and restoring them in better conditions. That means the execution of renovation, retrofit, and refurbishment projects falls within the definition of reverse engineering, provided the fact that they use as-built information for modifying the building.
To extract clear or unambiguous as-built information from the buildings and structures which have been constructed long back, surveyors have to use high-definition laser scanners. That means applications of laser scanning technology have become a must when it comes to surveying a building accurately.
There are quite a few other software solutions (such as AutoCAD, ArchiCAD, and Allplan which can also be used for developing as-built models for renovation and retrofit projects, but Revit falls within the category of top BIM software.
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