FreeCAD is an Open BIM–oriented, open-source platform that provides advanced capabilities for managing, analysing, and validating construction projects through parametric and data-driven models.
Its open architecture, combined with support for standard BIM formats, enables transparent, flexible, and interoperable workflows throughout the construction process. Rather than being limited to two-dimensional representation, FreeCAD allows work with real geometry, measurable elements, and structured information, making it a robust alternative within an Open BIM strategy.
The following points outline the key reasons why FreeCAD represents a technically solid and practical Open BIM solution, particularly suited to real-world construction environments and on-site project management.
1. Parametric models for on-site change management
During construction, changes are constant: dimensional adjustments, alternative construction solutions, and unforeseen interferences.
With FreeCAD, it is possible to:
-
Create parametric models, not merely drawings.
-
Modify a dimension or thickness and have the entire model update automatically.
Real example:
A change in slab thickness (a three-dimensional modification) automatically updates heights, junctions, and volumes, without the need to redraw plans.
https://devtalk.freecad.org/t/hello-new-user-testing-freecad-for-architecturebim/46184
2. Early detection of conflicts (clash detection)
FreeCAD enables work with real volumes, not just lines.
Using FreeCAD, it is possible to:
-
Detect collisions between structure, building services, and architectural elements.
-
Review service penetrations through slabs, walls, and columns.
https://forum.freecad.org/viewtopic.php?t=64235&utm_source
3. Control of measurements and quantities
As a Construction Manager, quantity control is essential.
With FreeCAD, it is possible to:
-
Extract real volumes, surfaces, and lengths directly from the model.
-
Link geometry to technical data (material, phase, zone).
Example:
Verifying whether the certified cubic metres of concrete correspond to the actual executed geometry.
4. Technical analysis and validation of construction solutions
FreeCAD is not just a drawing tool; it is a geometric analysis platform.
It can be used to:
-
Verify actual slopes, drainage paths, and junctions.
-
Analyse minimum thicknesses, radii, and tolerances.
Example:
Validating whether a slope complies with regulations without relying solely on 2D drawings.
5. Automation of repetitive tasks (time savings)
FreeCAD allows the automation of routine construction management processes.
Tasks that can be automated include:
-
Generation of drawings directly from the model.
-
Lists of elements by zones or phases.
-
Automatic updating of documentation after changes.
Real impact:
Less time spent on administrative tasks and more time dedicated to technical site management.
https://forum.freecad.org/viewforum.php?f=22&utm_source=
6. Integration with BIM formats and digital workflows
FreeCAD works effectively with standard formats, which is essential for advanced digital coordination.
Wikipedia – FreeCAD
FreeCAD is described as a free and open‑source 3D CAD and BIM software application, licensed under the LGPL‑2.0‑or‑later, and intended for modeling in engineering and architecture.
https://www.freecad.org/index.php?lang=es_ES
FreeCAD WIKI
https://wiki.freecad.org/User_hub
forum FreeCAD
@Yolanda Muriel 
yolandamuriel.com 