WHAT IS IFC SHAREPARAMETER?

[Alvin_Alejandro]

I wonder if it can use to tag the property of an object...such floor thickness, height offset from level or beam elevation & etc..

[Alvin_Alejandro]

I got my answer...
You can export Revit Building building modeling information to the Industry Foundation Classes (IFC) file format that was developed by the International Alliance of Interoperability (IAI). The IFC format is a non-proprietary file format that can be used by the various building disciplines (architecture, engineering, construction, and facilities management) and their CAD applications. Information exchange can occur throughout the construction projects and life cycles of buildings.

The Revit Building building information model can be exported to IFC format so that the information in the model can be used directly by other building specialists, such as structural and building services engineers.

IFC uses architecturally meaningful containers to describe real-world objects. Those containers also have parameters that have meaningful values. So, for example, a Revit Building window and its parameters would be exported to an IFC container called IFCWindow.

There is a direct relationship between many Revit Building elements and IFC containers, such as walls, doors, windows, architectural columns, and furniture. They do not require any specific user action to export them. Standard building elements like walls, beams, stairs, ramps, and railings also do not require any user action to export. Other Revit Building families require that you map them to IFC Containers before exporting. You can do this through the IFC Options command. One example of such a family is an escalator.


Setting IFC Containers and Exporting


On the File menu, click Import/Export Settings IFC Options.
To load an existing IFC mapping file, click Load and navigate to the directory containing the file.
To generate a new IFC mapping file, click Standard and select a mapping standard in the dialog box.
Each row in the IFC Export Classes dialog box represents either an element category or subcategory.

Next to each category or subcategory that you want to export, enter the appropriate IFC Class Name (Container) and Type.
Appropriate values are set according to the IFC standard definition.

If the values next to the category or subcategory are left blank, Revit Building will try to guess what the category is. If it cannot make a match, the object is not exported.

When finished entering values, click OK.
On the File menu, click Export IFC.
In the Export dialog box, navigate to the directory where you want to save the IFC file.
Enter a name for the file and click Save.
IFC File Locations

There are IFC files included with Revit Building. The IFC Shared Parameters.txt is installed into the Program folder of the Revit Building program group. This file can help you modify existing projects and families to include IFC parameters. You can create projects that are already set to the IFC standard, using the IFC Metric Template.rvt file. This file is included in the Web Library.

too.. frusttrated yesterday for object properties which cannot be tag.....

[Shaun v Rooyen]

The help file is actually helpfull, isn't it.

[truevis]

There is a freeware IFC Engine Viewer available at http://www.ifcbrowser.com/ifcengineviewer.html

It can read in the IFC export from Revit & display it. It seems similar to a 3D DXF, but allows one to change some values.

Any ideas about what this might be useful for?

[angel.velez]

Well, that question can be taken several ways! Are you asking what IFC is useful for, or what being able to tweak parameters in the IFC file is useful for?

The second one is easier than the first, so I'll answer that first. Given that the IFC file contains extra building information data associated with IFC objects, being able to play with the file and make a quick modification (fixing a typo, changing a fire rating, that sort of thing) without having to figure out the file format is quite useful.

Now, for the first question: why would you want to use IFC? Well, the most likely reasons would be to exchange data with a 3rd-party application that prefers (or only accepts) IFC as a input file format.

[truevis]

...why would you want to use IFC? Well, the most likely reasons would be to exchange data with a 3rd-party application that prefers (or only accepts) IFC as a input file format.
Do you know of some software that takes an IFC in and does something with it? I suppose there could be things like what they're doing at http://www.greenbuildingstudio.com/ .

[nmhali689738]

Alvin: check SimpleBIM From DataCubist.

[DaveP]

Psssst...
That post is twelve years old.