Point cloud to BIM Modelling is achieving rapid growth within the AEC industry. These services usually are undertaken by Survey companies, Architectural firms and construction companies globally to convert laser scans into highly detailed and precise 3D Models. The point cloud Modelling services usually have three important phases. Scanning & Surveying phase, Registration phase and conversion phase of these scans to 3D Models or CAD Drawings. Usually, the scanning and registrations are done by the Survey companies locally.
These companies have laser scanning devices which scan the buildings deeply, where even the most deepest of building components are captured in form of point clouds which later are put together in form of a registered point cloud image. These raw formats are later converted into user-friendly .rcs, .rcp or .pts formats that can be accessed through various BIM software such as Revit, ArchiCAD etc.
Let us see the reason behind the utilization of point cloud modeling services. Let us discuss 6 benefits of using scan to BIM conversion services
#1 Save surveying time:
Using a laser scan technique can save a lot of time in surveying an old building or any existing site that requires renovation. A survey company can invest in a good laser scan equipment and scan the building into different phases. This is easier than having 3 to 4 technicians on site taking measurements. This reduces the cost and effort by 40% in total. You can easily capture the components and their 3d geometry using laser beams which later can be converted in scan images. This reduces field time to a great extent.
#2 Accurate Results:
High precision and accurate data collection are one of the most important advantages in using point cloud services. If the data collection is accurate, the conversion of scan to BIM models will definitely give great results. Traditional surveying never guaranteed accurate results. It depended a lot on the technician’s understanding, his judgments and other factors. Usage of scanning to a great extent improved accuracy criteria along with visibility of deepest entrenched building components such as beams, pipes etc.
#3 Detailed building analysis:
Converting laser scans to BIM models has brought about a colossal transformation in reviewing and analyzing any typical building. Previously a building put up for renovation or re-structuring process consumed a lot of time. Many issues in the previous design, deteriorated building components were not visible during surveying and had to be unearthed only during actual demolition. But this process has changed for good with the advent of laser scanning. All the critical issues and building components are visible during scanning and can be analyzed completely before the renovation process begins.
Building analysis process goes hand in hand with the scan to BIM modeling process. The laser scans are first converted into detailed BIM Models with all kind of building data incorporated in it. This model is analyzed later for the damaged building components, re-designing of the building, implementation of BIM compliances prior to construction etc. We also can further analyze the costing, budgeting, timeline and interferences that arise while re-constructing. Building analysis is one of the most important parts of scan to BIM conversion services.
#4 Design Assessment for renovation:
Design validation or assessment has become extremely effective by using scan to BIM modeling. Scan to BIM conversion services is used mostly for renovation and refurbishment of old and existing structures. Hence validating the new designs become a very important step before proposing a design for construction. As we know, scanning a building into different laser images and processing them to generate a seamless scan image is the first step. Later this scan is used to develop a 3D BIM Model with all details, levels, and components such as beams, columns, slabs, doors, windows or any MEP component for that matter. This model will give a very comprehensive picture of the existing building design and also help us develop the new design.
There may be many up gradations that the existing site may require. The site may need to be reconstructed based on new design codes, new parameters or environmental standards. All these needs can be assessed by looking at the 3D model developed from laser scans. You can also model the new design as an extension of old design. You can also perform interference checks by comparing the new design model with old. Point cloud to BIM modeling also ensures complete accuracy as the as-built model is not dependent on the manual survey but dependent on the actual image of building through scanning.
#5 Seamless Collaboration between multiple teams
Point cloud to BIM Services is extremely useful in establishing collaboration between Design Engineers Architects, contractor and end user. By developing 3d Models from scans, one can understand the existing design and discuss the proposed designs too. It becomes easier to understand the design flaws, the updations required in the new proposed design. The BIM Engineer can integrate the Architectural, Structural and MEP Model developed from scans into a co-ordinated 3D model to further identify potential threats, interferences, and design issues in the existing structure and solutions to correct them.
#6 Reducing overall cost: Scan to BIM modeling helps in reducing overall surveying and construction costs. Traditional surveying methods are extremely costly and time consuming compared to laser scan surveying. When it comes to As-built modeling, point cloud BIM modeling has proved to be a savior in construction planning and budgeting. The best part is that owing to the virtual construction modeling, errors and issues can be detected earlier during the project life cycle which reduces the overall construction costs. Even the labor cost is reduced since you have a laser scanner that actually scans the building instead of a technician.
Bhagwati Pathak is an Executive Director at Tesla Outsourcing Services. Technical Project Management, BIM, Client Management, and Leadership are her forte. With an expertise in BIM and a flair for writing, her articles provide a direction to contractors, sub-contractors, engineers, and architects in employing the right methodology for an Architectural, Structural, or MEP CAD / BIM project.