topic IFC in navisworks in Navisworks Forum

IFC in navisworks

galicinao-roger — Fri, 17 Sep 2021 05:05:23 GMT

i exported IFC from revit with coordinates and when i append in Navis works both my cad reference and ifc are in correct position However when other user append my IFC file, the location is different from mine. Anyone who could help for me. Thanks.

Re: IFC in navisworks

robert.kiedrynski — Fri, 17 Sep 2021 06:12:29 GMT

It might be Nevisworks version issue.

In Navisworks 2019 there is an option in IFC import (File Readers), called Revit IFC.

In 2021 it is hiding under "Conversion Method" I believe.

Depending on the version, try to change one of them.

Re: IFC in navisworks

galicinao-roger — Fri, 17 Sep 2021 06:56:28 GMT

Thank you. Im just wondering when they check the ifc for the coordinates it is in local position maybe thats why its very from from actual location, is there a proper way of exporting ifc in revit reflecting the GIS coordinates because i use xml for shared reference point and use internal origin. and it seems in my pc everything is ok but when other uses my ifc there is a problem, maybe i miss something when it comes to exporting.

Re: IFC in navisworks

robert.kiedrynski — Fri, 17 Sep 2021 07:06:13 GMT

When exporting IFC there is a dropdown menu where you can change the coordination system. Try to export your file a few times changing that parameter and see if any is working for others.

Re: IFC in navisworks

galicinao-roger — Fri, 17 Sep 2021 07:12:14 GMT

I tried using survey point, project based point and internal origin except for shared coordinates. when i used shared coordinates my model is not in true north in navisworks, the rest everything is in the exact position as may dwg reference.

Re: IFC in navisworks

robert.kiedrynski — Fri, 17 Sep 2021 07:19:51 GMT

Try to export NWC from your Revit file and see how it is aligning on other computers.
If it will be ok then it is an IFC import to Navisworks problem that I've mentioned earlier.

Re: IFC in navisworks

galicinao-roger — Fri, 17 Sep 2021 07:28:57 GMT

i have tried that as well both nwc and revit and both have exact location. do you know any software that could check the coordinates of an ifc because i think that is their main issue when they check the ifc the coordinates seems it is in local position. their checking has something to do with BIM . thanks

Re: IFC in navisworks

robert.kiedrynski — Fri, 17 Sep 2021 08:10:25 GMT

The last solution I can think of is to set up a Revit file with a shared coordinate system and export IFC from there.

Re: IFC in navisworks

galicinao-roger — Fri, 17 Sep 2021 08:23:46 GMT

Do you mean, i will disregard the project base , survey point and internal origin as my coordinates? thanks

Re: IFC in navisworks

robert.kiedrynski — Fri, 17 Sep 2021 09:13:36 GMT

The survey point and project base point might have different values this way.

Re: IFC in navisworks

hmunsell — Fri, 17 Sep 2021 15:07:59 GMT

would you be able to upload the IFC and one of the Revit models for us to look at?

if not the whole RVT, duplicate it and erase everything but a couple walls for reference, and upload that.