Developing 3D models for renovation projects is not
that simple as it is for fresh construction projects. Even though same 3D
modeling software is used by design and construction professionals for
developing building information models for renovation projects problem arises
due to insufficient and chaotic information about the existing building. In
other words for developing 3D BIM models for renovation projects availability of correct building
information of the existing structure is a must.
Prior to the application of laser scanning
technology in renovation projects, design and construction professionals used
to involve in the tedious and strenuous task of surveying the structure
manually. The process of surveying as-built structure used to take a lot of
human efforts and time and there used to be no surety of the calculations being
accurate. That is why earlier architects and engineers used to find it
difficult to execute renovation projects.
The complications faced by architects and engineers
in the manual survey process raised alarms which ultimately resulted in the
adoption and application of laser scanning technology for the execution of
refurbishment, retrofit and renovation projects. Application of laser scanning
for surveying the building derived extraordinary results. That is why laser
scanning technology has been adopted by AEC industry globally for the quick and
seamless execution of renovation projects.
Laser beams emitted from high end laser scanners
which are placed near the as-built structure easily insert inside it and when
they reflect back they come along with point cloud data. Millions of point
clouds are acquired by survey team liable for surveying the structure by
scanning the building form different sides. Point cloud data that is collected
with the support of laser beams contain the complete information about
different disciplines of the as-built structure such as architecture, structure
and MEP.
But what is required from AEC professionals is to
stitch the multiple scans together for availing comprehensive information. Now
the survey company handovers the point cloud data to the clients who then
deliver it to a service providing company. The service providing company makes
use of point cloud data in Revit modeling services. Building details can be
viewed by modelers when a point cloud file is opened by them in Revit and based
on that information they create BIM models for renovation project.
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