IFC for Revit updates released 12 December 2015

Links below:

IFC for Revit 2015 (v15.6):
http://apps.exchange.autodesk.com/RVT/en/Detail/Index?id=appstore.exchange.autodesk.com%3aifc2015_windows32and64%3aen

IFC for Revit 2016 (v16.3): http://apps.exchange.autodesk.com/RVT/en/Detail/Index?id=appstore.exchange.autodesk.com%3aifc2016_windows32and64%3aen

Update notes for IFC for Revit 2015 (v15.6):
General:
– Added some minor export performance tweaks.
– Added IFC4 Design Transfer View as an option.  With this option, Revit will attempt to create IfcAdvancedBReps in some cases.
– The import log file now contains the importer version at the end.

New Export Functionality:
– Display the element id for each element as it is exported.
– Create IfcGroups for multiple IfcReinforcingBars created by one rebar element in Revit.
– (IFC4) Add support for ConicalFace and fix RevolvedFace for IfcAdvancedBRep.
– (IFC4) Reuse IfcCartesianPoints when exporting an IfcAdvancedBRep.

Export Bug Fixes:
– Associate some entities with IfcBuilding if they have no other spatial containment, or there are no levels.
– Correctly export DirectShapes of Ramp, Stairs, or certain MEP categories.
– Correctly relate IfcAssembly to IfcBuildingStorey in certain cases.
– Export some elements with geometry that couldn’t be correctly split into multiple solids.
– Fix crash in certain cases where we can’t create a valid tessellation for a face.
– Fix crash when exporting certain vertical roofs.
– Fix crash when exporting elements with no bounding box when splitting elements by level.
– Fix crash when exporting filled regions with invalid color definitions.
– Fix the name of IfcArbitraryClosedProfileDef entities.
– Never export curtain wall panels independent of their curtain walls.
– Remove invisible geometry when exporting families when exporting elements in the current view.
– (IFC4) Correct export of IfcMechanicalFastener.

New Import Functionality:
– Add support for extra currency types.
– Allow import of unbounded grid lines, with a warning and an arbitrary length.

Import Bug Fixes:
– The IfcSweptSurface “Position” attribute is now optional.

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