When exporting drawings from Archicad to DWG format, identical elements such as windows and doors are exported as separate block definitions, even when they use the same library object, size, materials, and parameters.
This occurs because Archicad preserves internal element differences (e.g. additional details or parameters) that are not visible in the 2D DWG representation. While this behavior is technically correct, it creates challenges in AutoCAD-based workflows, where users rely heavily on block consistency.
Current Limitation
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Identical Archicad elements are exported as different blocks in DWG.
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In AutoCAD, users cannot easily select or edit all identical elements at once.
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This significantly reduces efficiency during coordination, detailing, and consultant workflows.
Requested Enhancement
Introduce an optional DWG export setting (via DWG Translator) that allows:
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Identical Archicad elements (same library object + same visible 2D geometry) to be exported as a single shared block definition, or
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An option to merge identical 2D representations into the same DWG block, ignoring internal Archicad-only differences.
Benefits
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Improved interoperability between Archicad and AutoCAD.
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Faster selection, editing, and coordination in DWG files.
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Better workflow compatibility with consultants who depend on DWG-based standards.
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Optional behavior ensures existing workflows are not disrupted.
Use Case
Architects frequently exchange DWG files with external consultants (engineers, authorities, contractors) who need to quickly select and modify all identical windows or doors. A unified block definition would significantly improve productivity and coordination accuracy.
Open