AutoCAD MEP General Discussion

AutoCAD MEP General Discussion

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*Expert Elite*
Keith.Brown
Posts: 1,121
Registered: ‎03-13-2008
Message 1 of 5 (396 Views)
Accepted Solution

IFC Export of MvParts

396 Views, 4 Replies
05-29-2012 01:01 PM

Hi.

 

I am trying to export an AutoCAD Mep model to IFC and I am not having alot of luck exporting the information that I want.  Currently my drawing is very simple and only containes a few spaces and 2 VAV boxes.  The two VAV boxes have their IFCTC columns in content builder set to IfcFanType.NOTDEFINED.  The subtype of the part is set to SINGLE DUCT VAV.  When I export the file, I get this line describing the VAV box.

 

#1765=IFCFANTYPE('0RFsBvPhT8hgK6ItbtVPAW',#33,'Single Duct VAV','','',(#1764),$,'','Single Duct VAV',.NOTDEFINED.);

 

The output line is described by the following:



Attribute                                              Type                                                    Defined By
GlobalIdIfcGloballyUniqueId (STRING)IfcRoot
OwnerHistoryIfcOwnerHistory (ENTITY)IfcRoot
NameIfcLabel (STRING)IfcRoot
DescriptionIfcText (STRING)IfcRoot
ApplicableOccurrenceIfcLabel (STRING)IfcTypeObject
HasPropertySetsSET OF IfcPropertySetDefinition (ENTITY)IfcTypeObject
RepresentationMapsLIST OF IfcRepresentationMap (ENTITY)IfcTypeProduct
TagIfcLabel (STRING)IfcTypeProduct
ElementTypeIfcLabel (STRING)IfcElementType
PredefinedTypeIfcFanTypeEnum (ENUM)IfcFanType

 

So Both the name and the ElementType is being set to "SINGLE DUCT VAV'.  This is not what I want.  I want the Name to be the partsize name.  So I did a little digging and got to this page in the help file.

 

http://exchange.autodesk.com/autocadmep/enu/online-help/search#WS1a9193826455f5ff29a9843712b1addac1f...

 

I believe that this page is telling me that if I add the following property set: IFCObjectAttributes{IFCFanType] found in the IFC Property Sets location that I can override these values.  I have attached the property set, filled in the values that I want, but still get the original values.

 

I am at a loss at what to try next.  It is clear that the IFC exporter is not working correctly.  Why would it take the name of the part and insert the part subtype into it.  What if i have 100 of the same type of part in a single drawing.  There is no way to distinguish one from another.

 

Has anyone tried something like this before and came across this issue?  Any help on the matter would be appreciated.

 

Thanks,

Keith


Keith Brown AutoCAD MEP BLOG | RSS Feed
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*Expert Elite*
Keith.Brown
Posts: 1,121
Registered: ‎03-13-2008
Message 2 of 5 (391 Views)

Re: IFC Export of MvParts

05-29-2012 02:49 PM in reply to: Keith.Brown

**** UPDATE ****

 

I have found that the method talked about in my previous post works just fine for architectural objects. i.e. (spaces).  I can attach the appropriate property set to a space and override the name and description.  But still no luck for MEP.

 

Why can't they make them work the same?


Keith Brown AutoCAD MEP BLOG | RSS Feed
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Product Support
Joshua.Benoist
Posts: 517
Registered: ‎08-23-2006
Message 3 of 5 (372 Views)

Re: IFC Export of MvParts

06-04-2012 01:49 PM in reply to: Keith.Brown

I do not know the answer and have emailed some guys that may be able to help.

Joshua



Joshua Benoist, PE
Senior Support Specialist
Product Support
Autodesk, Inc.

*Expert Elite*
Keith.Brown
Posts: 1,121
Registered: ‎03-13-2008
Message 4 of 5 (370 Views)

Re: IFC Export of MvParts

06-04-2012 01:56 PM in reply to: Keith.Brown

Thank you Joshua.


Keith Brown AutoCAD MEP BLOG | RSS Feed
AutoCAD MEP 2014 | Revit 2014 | EastCoast CAD/CAM V6.1 | Visual Studio 2013
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⁞|⁞ Please use Mark Solutions!.Accept as Solution and Give Kudos!Give Kudos as appropriate. Thank you!
Product Support
Joshua.Benoist
Posts: 517
Registered: ‎08-23-2006
Message 5 of 5 (323 Views)

Re: IFC Export of MvParts

06-14-2012 02:16 PM in reply to: Keith.Brown

Our developers have confirmed as well, that MEP objects do not behave the same as the Architectural.  They are now aware of this behavior and are researching how to address it.

Joshua



Joshua Benoist, PE
Senior Support Specialist
Product Support
Autodesk, Inc.

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