We are going to import a DWG drawing. It also means a geometry import, so as a result, we get a calibrated drawing, which contains lines, polylines, curves, notes, hatches, dimensions, in other words, 2D elements. These items after importing can stay on the original layers, or all object can be placed on one single layer. Based on this DWG drawing, we will now create a two-level building.
The Blueprint feature automatically generates BIM models from DWG floor plans. This intelligent tool interprets 2D drawings and transforms them into 3D models, accelerating the design process and giving designers more time for creative work.
The algorithm "reviews" the drawing and analyzes it based on the specified wall and opening limits.
During the "review," it filters out unnecessary content and searches for patterns in the drawing that can reliably be identified as walls, doors, and windows.
In the next step, it transforms these into real architectural elements, creating walls, doors, and windows.
The process is very fast – architectural models of office buildings covering several hundred square meters are completed in just a few seconds.
What is the recognition rate for walls and openings on the floor plan?
For CAD drawings, the algorithm can achieve a 90-95% recognition rate.
Naturally, there may be patterns in the drawing that cause errors, such as pergolas, which may mislead the program. Therefore, it's always worthwhile to review the result with a designer’s eye before further processing the plan.
Import DWG plan
Select the Building menu - Blueprint - From DWG - Import command.
Click on the Open button and the pop-up window will show the following:
Set the scale of the floor plan to achieve a scaled floor plan. Use the ruler to determine the correct measurement unit -select mm here.
Load the plan by pressing OK.
Choose the Place with new drawing origin option and position the drawing near the origin with one click.
Afterward, it’s essential to verify that the correct scale was set.
You can also select the Measure Distance command from the Quick Access Toolbar:
Converting the drawing into a Local group
We can significantly increase the accuracy of the Blueprint algorithm by only leaving the layer related to the walls turned on. Using the Layer Walk command, I activate only the A Walls layer.
On the floor plan, select the dimensioning for the openings and move it to the Dimension layer, which I then turn off.
Now only the walls and the openings within the walls are visible on the floor plan.
In the next step, I convert the drawing into a local group.
Select the Building menu - Blueprint - From DWG - Create local group command.
Select the entire drawing, and the group is created.
Generative Floor plan - Creating a 3D BIM Model
The algorithm "reviews" the drawing and analyzes it based on the specified wall and opening limits. During the "review," it filters out unnecessary content and searches for patterns in the drawing that can reliably be identified as walls, doors, and windows. It then transforms these into real architectural elements, creating walls, doors, and windows.
Select the Building menu - Blueprint - Generative Floor Plan command.
Enter the threshold values in the dialog box, then press OK.
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