BricsCAD BIM basics: Surface Modeling Techniques

It’s easy to manipulate surfaces with the three main features of surface modeling. The features are fast way to increase the thickness of your wall, create a void in another geometry or creating a copy of your objet.

The three main features are found in the QUAD. The Quad cursor menu, aka the Quad is an alternative to grip-editing of entities, offering a (much) richer set of editing operations while requiring fewer clicks, without cluttering the screen with loads of grip-glyphs.

Quad BricsCAD


Extrudes 2D entities to 3D solids. Add volume to solids or removes volume from solids.


Allows editing of the single geometry and doesn’t influence relationships with other geometry. If you push/pull go in the negative direction, the entity turns red to indicate that the result won’t be created.  If you move in the positive direction, then it will increase the size of the geometry.


Drag major faces of solids while preserving connections with minor faces, optionally creates a copy of the solid. It also allows to reposition a BIM section.
BIMDrag is used for:

  • Change the length of a wall.
  • T-connect a wall to another wall.
  • Change the height of a wall.
  • Connect a wall to a floor or roof slab
  • Change the dimensions of a slab.
  • Connect a slab to a wall.
  • Modify the dimensions of an opening.
  • Move a window or door vertically or horizontally, if applied to an inner face of the opening made by the insert.

Next time in the BricsCAD BIM basics series: Create geometry using a combination of surface modeling and solid modeling techniques.

Sander Scheiris

As VP Marketing at Bricsys, I'm in charge of the marketing team, the corporate identity and the user interface of our products. I love photography, electronic music and I'm a petrol head.

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