Building Information Modeling (BIM) is transforming architecture and engineering by enhancing efficiency and collaboration. GstarCAD 2025 offers robust BIM support features that empower designers and engineers.
IFCIMPORT
You can enter IFCIMPORT command or click Ribbon BIM Open IFC Files to import an IFC file with complete BIM data.

After opening an IFC file, you can select an entity and go to the Properties Panel to its BIM information.

You can also check and manage the entities using Structure Panel, which displays a tree structure of entities based on BIM data.
You can execute operations by clicking buttons on Ribbon BIM, or entering the following commands.
* STRUCTUREPANEL: Open structure panel
* STRUCTUREPANELCLOSE: Close structure panel
* STRUCTUREPANELUPDATE: Update structure panel

Structure Panel Menu: Displays the Structure Panel main menu.
* BIM: Displays a BIM entity-based structure.
* Configure structure tree: Opens the Configure Structure Tree dialog box, which allows you to set the structure tree configurations.
* Select Configuration…: Allows you to load Structure Tree Configuration Files (*.gst).

Structure Panel right-click menu: It is used to manage the entities, you could complete operations including show, hide, isolate, zoom, expand all, collapse all and open the configuration panel

Configure structure tree: Allows users to define the tree structure of the Structural Panel.
File:
*Open…: select to open another *.gst configuration file.
*Save: saves the current configuration
Save as: saves the current configuration under a different nam
Group/Sort
*Add: Adds a new rule or property
- Select an existing rule, then click the Add or right-click and select Add Rule in the right-click menu.

2. The new rule will be added below the selected rule.
3. Right-click the new rule and click Rename in the right-click menu and input a new name.
4. Select the Filter node of the new rule, then click the Add or right-click and select Add filter property.
5. Select the Group node of the new rule, then click the Add or right-click and select Add Grouping Property.
6. Select the Sort node of the new rule, then click the Add or right-click and select Add sorting property.
7. The Select Property dialog box pops up, select a property, then click.
*Delete: deletes the selected rule or property.
* Move Up: moves the selected rule or property up.
* Move Down: moves the selected rule or property down.
* Toggle negations: filter properties only
Show/Skip:
You can pick an option and then select the entity types which you want to follow the option you pick.
Options:
*The drop-down list is to select what happens in the model space when entities are selected in the Structure Tree.
*The checkboxes are to select what happens in the structure tree when an entity is selected/deselected in the model space. The following options are checked by default: On entity selection, select in tree; On entity selection, expand parent in tree; Deselect entities on hide.

On the basis of IFC Import, you can now export IFC files and import RVT files with complete BIM data, and STEP/IGES module will be included in GstarCAD installer, you don’t need to install it separately.
IFCEXPORT
On the basis of IFCIMPORT, now you can enter IFCEXPORT command or go to Ribbon
BIM Export IFC files to export drawings in IFC format with their complete BIM data.

Besides, there’s also a newly added system variable for handling IFC files in GstarCAD:

RVTIMPORT
You can enter RVTIMPORT command or go to Ribbon BIM Open RVT files to import drawings in RVT format with their complete BIM data.

STEP/IGES Files Support
STEP (Standard for the Exchange of Product Model Data) is an international standard established by the International Organization for Standardization (ISO) that defines how product information is represented and exchanged throughout the entire product lifecycle. The file formats include .step, .stp, and .ste.
IGES (The Initial Graphics Exchange Specification) is a general ANSI information exchange standard based on CAD (Computer-Aided Design) and CAM (Computer-Aided Manufacturing) systems. The file formats include .igs or .iges. GstarCAD 2025 supports the import of STEP/IGES files, enhancing our platform’s capability for 3D model data.

You can go to GstarCAD logo Open, or GstarCAD logo Import Other Formats, and select STEP/IGES in the drop-down list of Files of types to open or import STEP/IGES files. Besides, you could also simply enter IMPORT, STPIMPORT or IGSIMPORT command.





