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Re: [EnergyPlus_Support] Re: IFC>IDF problems
#1: In some instances it may appear that older versions of the IFCtoIDF
work better, but the latest version has been significantly changed to
provide better results overall. We will not be supporting older
versions since it becomes impossible to determine where problems come
from with every tool in the chain constantly changing (CAD, IFC data
model, IFC middleware like BSPro, the IFCtoIDF utility, and EnergyPlus).
#2: You must first register, before downloading. If you still have
problems downloading, you should contact G.E.M. Team Solutions.
#3: The example file floor2.IFC should not have been included with
EnergyPlus V1.1. Do not use this file for testing.
> Thanks for your response, Rob.
> #1: I already updated to EnergyPlus V1.1 and have the latest
> IFCtoIDF(v1.1) and BSPro(2x beta6).
> But I got the error message which I described in STEP4
> "Error reading IFC file. Message written to IDF file"
> The reason why I tested the old version of EnergyPlus v1.0.023,
> IFCtoIDF(beta4)/BSPro(v1.12b) and included the results in STEP5
> is the old version at least prodece the walls in IDF file, although
> no roof no floor; while the new version v1.1 doesn't give me any
> surface at all in the IDF file.
> In other words, it seems the old version works a little better ?!
> #2: I went to the link but it's login/password protected for download.
> G.E.M. Team Solutions IFC section:
> #3: I also did some experiment with the floor2.IFC which came with
> IFCtoIDF with EnergyPlus V1.1, Using IFCtoIDF(v1.1)/BSPro(2x beta6)
> gives no floor no roof(ceiling) in the IDF produced.
> Then I switch to the old version IFCtoIDF(beta4)/BSPro(v1.12b) and
> processed the same floor2.IFC, the IDF contains floors but no roof
> (ceiling). Again the old version seems to work better in the case.
> I don't know what I did wrong.
> The floor2.IFC and floor2_v11.IDF and floor2_beta4.IDF were uploaded
> to the folder [1zonetestIFC] for reference.
> Thanks for the help.
> Hello Ming,
> First - You should update to EnergyPlus V1.1, which includes an
> update to the IFCtoIDF utility and the BSPro COM-Server middleware
> that the utility requires. This latest version includes substantial
> changes to the import of geometry from IFC data files.
> Second - We do not yet have much experience with ADT 3.3. You should
> be using the latest IFC interface for ADT. I will forward a message
> to this email list with the URL for the IFC interface.
> Third - Please let me know if you are still having problems after
> updating your software. We need as much feedback as possible so that
> we can continue to improve the IFC interface for EnergyPlus.
> Rob Hitchcock
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