Export to IFC format from ArchiCAD and import to CYPECAD

Export to IFC format from ArchiCAD and import to CYPECAD
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Creating IFC files in ArchiCAD

The IFC format generated by ArchiCAD (Graphisoft CAD/BIM program) is the way in which the information introduced in an ArchiCAD project is transmitted to CYPECAD.

To generate an IFC file, the user must select the File > Save As from any floor plan view of any of the floors created in the project. In the dialogue box that appears, the following must be indicated:

  • Within the Field Save In, the directory where the IFC file is to be placed.
  • In the Name field, the name of the file to be exported.
  • In the Type field, the type of IFC file. To do so scroll down the list and select IFC_2X3 (*.ifc).
  • Finally, Click on the Save button, and the IFC file will be exported to the selected directory and with the indicated name.

The IFC file cannot be generated from a 3D view of the project, as the Save As option of a 3D view of ArchiCAD does not allow to select IFC format within the Type field.

Importing IFC files to CYPECAD

Using the Automatic introduction IFC option, the Automatic job introduction: DXF, DWG and CAD/BIM models allows for the import to CYPECAD of IFC files generated by ArchiCAD® (Graphisoft CAD/BIM program). By means of an assistant, the user confirms and completes the information obtained from the IFC file, after which, the following elements of the structure are generated:

Import of IFC files from CAD/BIM programs. Click to enlarge the image

  • Floor distributions
  • Loads on floors
  • Columns
  • External perimeter and internal openings perimeter beams
  • Partition and façade wall line loads
  • Drawing templates of each floor

The Automatic introduction IFC assistant contains a series of dialogue boxes where data is displayed or is to be filled in, which will generate the job.

CYPECAD. Click to enlarge the imageIFC file selection

In this dialogue box, the user indicates where the IFC file is located, which will then be used by the program to import the data displayed in the following steps of the automatic introduction.

CYPECAD. Click to enlarge the imageFloor heights

In this section the heights of all the floors contained in the selected IFC file are defined. CYPECAD proposes the heights and names of the floors contained in the IFC file. The user may confirm or modify this data. The type of foundation the job is to have is also indicated here: Fixed (with external fixity) or Floating (without external fixity) and the elevation of the foundation plane.

CYPECAD. Click to enlarge the imageFloor loads

Here, the user indicates the dead and live loads of the floors contained in the selected IFC file.

CYPECAD. Click to enlarge the imageColumns

In this dialogue box, a list of column type elements (IFCCOLUMN entity) contained in the IFC file is displayed. The user activates those to be imported to generate the structural column of the job.

CYPECAD. Click to enlarge the imageFloor slabs

In this dialogue box, a list of floor slab and roof elements (IFCSLAB and IFCROOF entities) contained in the IFC file is displayed. The user activates the slab and roof types for which CYPECAD is to define their external perimeters and internal opening perimeters. The beam defining these perimeters must also be defined.

CYPECAD. Click to enlarge the imageExternal wall loads

Here, a list of all the wall and partition type elements (IFCWALL and IFCWALLSTANDARCASE) contained in the IFC file is displayed. The user activates the walls and partitions for which their loads are to be obtained to place them automatically as line loads in the job in CYPECAD.

CYPECAD. Click to enlarge the image

CYPECAD obtains the value of the line loads based on the dimensions of the selected walls and partitions; and the surface loads chosen by the user from a dialogue box in which the composition and surface weight of several types of walls are indicated. It is possible to choose a generic type of wall whereby the user assigns the value of the surface weight.

CYPECAD. Click to enlarge the imageDrawing templates

In this dialogue box, the user can activate the automatic creation of drawing templates to add them to the job in CYPECAD containing the elements selected here: columns, floor slabs, external walls and auxiliary elements. A template is created per floor.

The default setting of the program is to not have the auxiliary elements activated. The user may activate it but this will probably imply that a drawing template containing a lot of information will be generated, and therefore will be of a large size.

It is possible that the IFC file may contain an element that, within the CAD/BIM program, was originally defined as a column, slab or roof element (IFCCOLUMN, IFCSLAB or IFCROOF) and is not really a structural element and therefore, the user does not wish for it to be imported in CYPECAD. A similar case occurs with wall loads; these may not be required as their loads have already been included in the dead load of the floors.

For this reason, the automatic introduction IFC assistant allows the user to activate the elements to be imported in the Columns, Floor slabs and External wall loads sections.

Within the 3D views of the structure which appear in the Columns, Floor slabs and External wall loads sections, the elements CYPECAD reads from the IFC file are displayed in different colours. These correspond to IFCCOLUMN, IFCSLAB and IFCROOF, and IFCWALL and IFCWALLSTANDARCASE entities respectively.

The colours are present to differentiate between those which have been selected from the list and the remaining elements of the current dialogue box which have been activated to be imported, those which have not been activated and those belonging to other sections:

  • Element selected from the list of the current dialogue box

    Intense red and opaque if the element has been marked to be imported by CYPECAD.

    Light red and transparent if it has not been marked.
  • Elements not selected from the list of the current dialogue box.

    Orange and opaque if they have been marked to be imported.

    Light grey and transparent if they have not been marked.

    Elements from other dialogue boxes of the assistant.
  • Light grey and transparent if they have been activated to be imported.

    Are not drawn if they have not been activated.

CYPECAD modules

Modules common to CYPECAD and CYPE 3D:

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