# Best classification for an assembly

**URL:** <https://forums.buildingsmart.org/t/best-classification-for-an-assembly/5919>\
**Category:** IFC\
**Tags:** ifc\
**Created:** [February 3, 2025, 12:52pm UTC](https://forums.buildingsmart.org/t/best-classification-for-an-assembly/5919 "2025-02-03T12:52:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![namio.sousa](https://avatars.discourse-cdn.com/v4/letter/n/ce7236/32.png) [@namio.sousa](https://forums.buildingsmart.org/u/namio.sousa)\
**Post date:** [February 3, 2025, 12:52pm UTC](https://forums.buildingsmart.org/t/best-classification-for-an-assembly/5919/1 "2025-02-03T12:52:37Z")

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I have an assembly consisting of a garbage disposal and a P‐trap. I would like to convert this assembly into a single element. Can I classify the entire assembly as an **IfcElementAssembly** of type **ACCESSORY\_ASSEMBLY**?

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**Author:** ![jwouellette](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.buildingsmart.org/jwouellette/32/2140_2.png) [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\
**Post date:** [February 4, 2025, 5:57pm UTC](https://forums.buildingsmart.org/t/best-classification-for-an-assembly/5919/2 "2025-02-04T17:57:13Z")

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Sure. Nothing prohibits that. I suppose you could also use “USERDEFINED” and set the ObjectType.Name to “GARBAGE\_DISPOSAL”.

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**Author:** ![namio.sousa](https://avatars.discourse-cdn.com/v4/letter/n/ce7236/32.png) [@namio.sousa](https://forums.buildingsmart.org/u/namio.sousa)\
**Post date:** [February 11, 2025, 9:54pm UTC](https://forums.buildingsmart.org/t/best-classification-for-an-assembly/5919/4 "2025-02-11T21:54:45Z")

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Thank you. Indeed, I had tried that, but since I used USERDEFINED, I guess Revit doesn’t allow me to set the ObjectType.Name. But I confess I’m not expert using Revit.