Editing Revit setup for OpenBIM/Revit IFC classifications

You will be required to modify classification settings. The classification settings dialog can be found in the <code>File > Export > IFC > Modify Setup > Property Sets > Classification Settings ...</code> location.

[[File:Revit-classifications-settings.png]]

The details of the classification system that you are using will be entered into the fields of this settings window. An example is shown.

[[File:Revit-classifications-settings2.png]]

These values will vary depending on which classification system you are using. A list of standard values are provided in the [[IFC classifications]] page. The value of <code>Classification field name</code> will vary depending on whether you use the plug-in or not to manage your classifications.

== Classification without any plug-ins ==

This portion of the guide applies if you are not using any plug-ins to classify objects.

The <code>Classification field name</code> must have <code>ClassificationCode</code> set as a value.

You must create a new type parameter assigned to the object called <code>ClassificationCode</code>. Classifications are composed of two parts: a classification code, and a name of that particular classification item.  For example, in <em>Uniclass</em>, a code might be <code>SS_30_10_30_25</code>, and its corresponding name is <code>Heavy steel roof framing systems</code>.  This must be entered into the <code>ClassificationCode</code> as follows: <code>SS_30_10_30_25:Heavy steel roof framing systems</code>. The <code>:</code> symbol separates between the code and the name.

If your classification system does not have names but only has codes, then you may omit the <code>:</code> symbol and the name portion, and just enter <code>SS_30_10_30_25</code>, but this is discouraged. If your code contains the <code>:</code> symbol itself, you must specify a name portion.

== Autodesk Classification manager for Revit ==

This portion of the guide applies if you are using the [http://www.biminteroperabilitytools.com/classificationmanager.php Autodesk Classification Manager for Revit]. Even if you are using this plug-in, it does not mean your IFC export will contain classification data correctly.

The plug-in stores its classification codes in various parameter names scattered throughout different objects. You must include all of the relevant parameter names that the plug-in creates into a comma separated list in the <code>Classification field name</code> input field. An example is shown below:

<pre>Classification.Facility.Number,Classification.Space.Number,Classification.Uniclass.Pr.Number,Classification.Uniclass.EF.Number,Classification.Uniclass.Ss.Number</pre>

== Using multiple classification systems ==

The instructions so far allow you to only specify a single classification system.

To use another classification system, you must add another type parameter called <code>ClassificationCode(2)</code> to the relevant families. However, the text value of this field has special requirements. It must follow the formatting <code>[SystemName]Code:Name</code>. For example, you might fill this out with <code>[Uniclass 2015]SS_30_10_30_25:Heavy steel roof framing systems</code>.

It is not currently possible to fill out other information such as the edition, edition date, etc for subsequent classification systems.

You may add even more classification systems, such as <code>ClassificationCode(3)</code>, <code>ClassificationCode(4)</code> and so on.

[[Category:Autodesk Revit]]