CAD vs BIM: Why Choose Scan to BIM as an Innovative Process

March 12, 2023
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The Scan to BIM It is considered an innovative process, but what are the advantages compared to CAD restitution? Let's see the differences CAD vs BIM and let's make a comparison between the different survey techniques.

CAD vs BIM: The Differences

We can consider BIM as an evolution of CAD, but not only. The CAD model is a graphic representation of the project or parts of it, while the BIM model digitally returns the entire project.

With BIM and the Scan to BIM process it therefore changes the point of view on design, which is no longer a simple graphic representation but a working methodology.

Not only that, on a technical level the BIM It is integrated with the technology of the laser scanner survey, while the CAD it ties in with the traditional survey with total station.

Processes compared: laser scanner survey and traditional survey

Both laser scanning and traditional surveying have their own advantages and disadvantages, which is why we often wonder what the best survey method.

The traditional relief Compared to the laser scanner, it is faster in graphic restitution, but it presents several problems:

  • Requires longer times of note;
  • It leads more easily to incorrect or inaccurate results;
  • Generate a limited amount of information and requires more surveys to be able to integrate them;
  • It involves at least two people to carry out the survey;
  • The representation of the actual state in CAD is limited to the information obtained;
  • It does not allow designers to have a complete vision to start working.

The laser scanner survey On the other hand, it is slower in graphic restitution, because it is necessary to work on the obtained point cloud, but it has numerous advantages compared to traditional surveying:

  • Speed up the process under construction;
  • It is performed by one person only;
  • Gets more detailed information and precise, without the need to repeat the measurements;
  • Limits the possibility of errors and inaccuracies;
  • It integrates with the Scan to BIM process;
  • It allows designers to have a complete picture of the work to be done, with all the information needed to start the process.

The advantages of Scan to BIM compared to CAD restitution

The laser scanner integrated into BIM is a innovative process which allows you to obtain a greater amount of information and more precise data.

Compared to the CAD return, Scan to BIM:

  • He has a more complete database of data and allows you to know all the information about the building;
  • It allows you to work by sharing information in real time with other team members;
  • Optimize timing, costs and work management;
  • Improve the safety on construction site;
  • It offers a complete vision of the work to be done at each stage, from design to facility management.

BIM compared to CAD restitution is a most modern and innovative technology, but this does not mean that CAD should be completely demonized.

There CAD return It allows you to share and modify projects more easily and quickly and to detect any problems such as misalignments more easily than with parametric software.