
Scan to BIM over Scan to CAD
Point Clouds are datasets that represent any given space or object. They are a collection of dots that are projected on the area to be measured using a 3D laser scanner or LiDAR. These points are then put together into a readable point cloud files.
Once the registration is complete the data needs to be converted into the format CAD or BIM software can read. Revit software for example uses RCS and RCD file. The intent of conversion determines whether the scans are converted into a BIM model or into CAD plans and elevations. The accuracy of the final output depends on the expertise of the team and the software used for conversion.
Below we will highlight the difference between Scan to BIM and Scan to CAD, and the actual benefits of moving forward with Point Cloud to BIM.
1. The complete representation of Building’s Environment:
While looking at restoration or renovation it is important to get a complete representation of a building design and environment. BIM considers more than the building’s core components. It takes into account the climatic conditions, earthworks, terrains etc. This gives a better understanding of the building not just in the now but also how the environmental factors will react to any of the building component in future. This helps target the restoration areas more effectively. This is particularly useful when the building is being reconstructed or refurbished as per new codes or environmental norms. CAD Drafting Services on the other hand does provide a precise 3D model from the point cloud scans but it requires a significant imagination and effort to understand the model in the real world situation.
2. The Dimensions of BIM:
The geometric BIM Models created from Point Cloud Data, doesn’t just provide precise 3D Models but also allows to add new dimensions to the model to extract enormous information about the project. 4D and 5D Models generate highly accurate effective schedules, simulations, material take offs and bill of materials. This is extremely crucial in the of remodeling of old buildings or infrastructure as BIM allows to understand the exact state of the current building material and we can thus recognize the need to replace. Even from a health safety perspective, it can help identify any hazards, such as materials containing asbestos, or challenges in terms of access to site.
3. Virtual Simulation for Rebuilding:
While refurbishing a certain part of the whole building especially in the cases of historical buildings and monuments it is crucial that while reconstructing a certain part the other areas of the building design stay intact. BIM not just allows for better visualization but also gives an idea about how any changes will affect the structural integrity of the building. Moreover, any change in one area of the building design consequently makes changes in any related areas, thus the overall effect can be visualized. Simulation also allows to see how significantly different the end model will look and helps architects and engineers stay true to the original design, again a key consideration when it comes to sensitive buildings with historical significance.
4. Large amounts of Data:
Point clouds hold highly detailed and accurate information about the environments and objects they map. But that precision comes at a cost: large projects often run to thousands of scans and the dataset becomes quite heavy. Compared to CAD software, Revit allows to input a large amount of data. Moreover, the data needs to be structured with a proper infrastructure to store, curate and validate it. The Intelligent Data Model doesn’t just allow a seamless management of data but does so amongst all the stakeholders involved in the project. This allows for instant updates, reduces commination errors and keeps everyone involved on the same page.
5. BIM helps remodel specific elements of historic building designs:
When it comes to using Point Cloud Data for remodeling or rebuilding historical building there are certain architectural facades or features like spheres, domes or ornaments which are unique to a certain period, style or buildings. These objects can be scanned following which, Revit Family Creation Services can be used to model them to their exact specification, ensuring that they retain their historic significance and aesthetic appeal.
Conclusion:
There are many other advantages of BIM software over CAD like better BIM Coordination, more precise models, saves project time and cost etc. This by utilizing Scan to BIM, the rebuilding or reconstruction process becomes faster, easier and more accurate.