# Users **URL:** https://forums.buildingsmart.org/c/users/6.md [Latest](https://forums.buildingsmart.org/latest.md) · [Categories](https://forums.buildingsmart.org/categories.md) · [Tags](https://forums.buildingsmart.org/tags.md) --- ## [About the Users category](https://forums.buildingsmart.org/t/about-the-users-category/22)
**Author:** [@stephen.oxlade](https://forums.buildingsmart.org/u/stephen.oxlade)\ **Replies:** 0
The primary location for end users of buildingSMART standards, such as IFC, BCF, and the bSDD. It is an opportunity to connect with your peers and experts on how best to leverage the standards. Any specific technical qu… --- ## [bSDD Content Updates](https://forums.buildingsmart.org/t/bsdd-content-updates/6067)
**Author:** [@bSDD\_bot](https://forums.buildingsmart.org/u/bSDD_bot)\ **Replies:** 661\ **Last updated:** [September 27, 2026, 11:12am UTC](https://forums.buildingsmart.org/t/bsdd-content-updates/6067 "2026-09-27T11:12:41Z")
Hi! I’m the bSDD Bot, and starting on the 2025-05-20T22:00:00Z (UTC) I will be automatically posting here about updates in the bSDD database every time someone publishes new content, or make changes. Stay tuned! New to … --- ## [Opinion about high polygon count in IFC](https://forums.buildingsmart.org/t/opinion-about-high-polygon-count-in-ifc/4699)
**Author:** [@agron](https://forums.buildingsmart.org/u/agron)\ **Replies:** 12\ **Last updated:** [July 22, 2026, 12:46pm UTC](https://forums.buildingsmart.org/t/opinion-about-high-polygon-count-in-ifc/4699 "2026-07-22T12:46:42Z")
Hi everyone, I was wondering how do you deal with IFC deliverables that have geometries out of many polygons, or triangulations. IMHO this phenomenon increases file size since it needs more lines to be written in the sc… --- ## [How to describe coatings such as paint or galvanising](https://forums.buildingsmart.org/t/how-to-describe-coatings-such-as-paint-or-galvanising/1888)
**Author:** [@DanPeel](https://forums.buildingsmart.org/u/DanPeel)\ **Replies:** 11\ **Last updated:** [July 21, 2026, 12:38pm UTC](https://forums.buildingsmart.org/t/how-to-describe-coatings-such-as-paint-or-galvanising/1888 "2026-07-21T12:38:40Z")
I would like to use IFC to capture whether or not a product (in this case a mooring bollard) has a coating - this could be paint or galvanising or something else. I am more interested in capturing data about the expected… --- ## [How to categorise electric strikes, IDF panels, egress paths, and more?](https://forums.buildingsmart.org/t/how-to-categorise-electric-strikes-idf-panels-egress-paths-and-more/2018)
**Author:** [@Moult](https://forums.buildingsmart.org/u/Moult)\ **Replies:** 12\ **Last updated:** [July 3, 2026, 9:24pm UTC](https://forums.buildingsmart.org/t/how-to-categorise-electric-strikes-idf-panels-egress-paths-and-more/2018 "2026-07-03T21:24:35Z")
A few objects which I’m not quite sure which IFC class they belong to - some perhaps straightforward, others a little less so. Some are also outside of my domain, so perhaps they are easy for others? Looking forward to y… --- ## [spatial reservation for equipment movement](https://forums.buildingsmart.org/t/spatial-reservation-for-equipment-movement/6528)
**Author:** [@DanPeel](https://forums.buildingsmart.org/u/DanPeel)\ **Replies:** 7\ **Last updated:** [July 1, 2026, 12:03pm UTC](https://forums.buildingsmart.org/t/spatial-reservation-for-equipment-movement/6528 "2026-07-01T12:03:16Z")
How do people typically model a volume of space which is reserved for something such as the movement of a piece of equipment or the clearance required for servicing a piece or equipment etc? Is this an example of what If… --- ## [Dealing with Culvert Bridge Designs](https://forums.buildingsmart.org/t/dealing-with-culvert-bridge-designs/6078)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 8\ **Last updated:** [April 21, 2026, 3:33pm UTC](https://forums.buildingsmart.org/t/dealing-with-culvert-bridge-designs/6078 "2026-04-21T15:33:54Z")
Question for the infrastructure folks… In the US, we’re refining our IFC data exchange standards for bridges. At this point, we’re getting into bridge/structure configurations we didn’t originally cover in our initial D… --- ## [Correct Use of IFC Name and Reference (deprecated?)](https://forums.buildingsmart.org/t/correct-use-of-ifc-name-and-reference-deprecated/6429)
**Author:** [@victorgm](https://forums.buildingsmart.org/u/victorgm)\ **Replies:** 8\ **Last updated:** [March 11, 2026, 1:57pm UTC](https://forums.buildingsmart.org/t/correct-use-of-ifc-name-and-reference-deprecated/6429 "2026-03-11T13:57:07Z")
Hello everyone, we are currently refining our office IFC workflow (based on Allplan 2025), and several questions came up regarding the correct use of Name, Reference and Predefined Type. From our understanding, Name is… --- ## [Change request not working](https://forums.buildingsmart.org/t/change-request-not-working/6440)
**Author:** [@cmellueh](https://forums.buildingsmart.org/u/cmellueh)\ **Replies:** 2\ **Last updated:** [March 9, 2026, 9:07am UTC](https://forums.buildingsmart.org/t/change-request-not-working/6440 "2026-03-09T09:07:58Z")
Hi, today i tried to send myself a change request over the “change Request” button of the BsDD site. (bSDD Change Request - buildingSMART Technical) and it says “Your change request has been submitted and send to the d… --- ## [How to Keep track of Changes in the dictionary automatically?](https://forums.buildingsmart.org/t/how-to-keep-track-of-changes-in-the-dictionary-automatically/6307)
**Author:** [@hamzatariq70](https://forums.buildingsmart.org/u/hamzatariq70)\ **Replies:** 1\ **Last updated:** [January 29, 2026, 10:12am UTC](https://forums.buildingsmart.org/t/how-to-keep-track-of-changes-in-the-dictionary-automatically/6307 "2026-01-29T10:12:08Z")
If one make changes to a single property or a class, how to keep track changes for that? A dictionary can get quite large so how would we know? Is there a way to achieve this? --- ## [Actor Assignment - clarifications on specification and usage](https://forums.buildingsmart.org/t/actor-assignment-clarifications-on-specification-and-usage/6305)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 1\ **Last updated:** [January 7, 2026, 7:15pm UTC](https://forums.buildingsmart.org/t/actor-assignment-clarifications-on-specification-and-usage/6305 "2026-01-07T19:15:31Z")
Can we get some clarification on the specification and usage of IfcActor, including IfcPerson, IfcOrganization, and IfcPersonAndOrganization? Our previous assumptions and efforts were all smashed by previous consultation… --- ## [BSDD PropertyType](https://forums.buildingsmart.org/t/bsdd-propertytype/6327)
**Author:** [@Jocelin](https://forums.buildingsmart.org/u/Jocelin)\ **Replies:** 5\ **Last updated:** [December 16, 2025, 3:50pm UTC](https://forums.buildingsmart.org/t/bsdd-propertytype/6327 "2025-12-16T15:50:30Z")
Hi, I have a question on how to define on a class and specially with the PropertyType parameter that can accept two values : Property and Dependancy. I will take the exemple of the red door class. This class is define … --- ## [ifc 4x3 Geolocation formatting correct ?](https://forums.buildingsmart.org/t/ifc-4x3-geolocation-formatting-correct/6331)
**Author:** [@dalvarez](https://forums.buildingsmart.org/u/dalvarez)\ **Replies:** 1\ **Last updated:** [November 13, 2025, 9:23am UTC](https://forums.buildingsmart.org/t/ifc-4x3-geolocation-formatting-correct/6331 "2025-11-13T09:23:46Z")
Hello, I received a IFC 4x3 with a geolocation information, that I have never seeing and want to confirm if this is “correct\\allow” by the standards, as reading the documentation I am confused and not sure if is valid. … --- ## [Where and how will my colors be saved in IFC?](https://forums.buildingsmart.org/t/where-and-how-will-my-colors-be-saved-in-ifc/1806)
**Author:** [@Hans\_Lammerts](https://forums.buildingsmart.org/u/Hans_Lammerts)\ **Replies:** 53\ **Last updated:** [November 12, 2025, 2:26pm UTC](https://forums.buildingsmart.org/t/where-and-how-will-my-colors-be-saved-in-ifc/1806 "2025-11-12T14:26:41Z")
Hi , I still can’t figure out how colors are saved in IFC and why they are lost during the conversion proces. It is kind of important to set and save the colors in display because they represent a diameter. So… (other … --- ## [IFC to GIS](https://forums.buildingsmart.org/t/ifc-to-gis/6115)
**Author:** [@PepaR](https://forums.buildingsmart.org/u/PepaR)\ **Replies:** 7\ **Last updated:** [October 31, 2025, 8:22pm UTC](https://forums.buildingsmart.org/t/ifc-to-gis/6115 "2025-10-31T20:22:22Z")
Hello, We are trying to optimize the workflow for transferring geometry and information from IFC to the GIS system. Does anyone have any experience to share on this topic? --- ## [Qto\_\*\*\* properties expectations](https://forums.buildingsmart.org/t/qto-properties-expectations/6298)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 7\ **Last updated:** [October 13, 2025, 11:28am UTC](https://forums.buildingsmart.org/t/qto-properties-expectations/6298 "2025-10-13T11:28:36Z")
As we further revise the US Bridge Design-to-Construction exchange standard, a question popped up about how the schema-defined Qto\_\* properties are expected to be used. I’ve looked at the documentation and past topic he… --- ## [bSDD-Toolkit (OpenSource bSDD-json editor)](https://forums.buildingsmart.org/t/bsdd-toolkit-opensource-bsdd-json-editor/6277)
**Author:** [@cmellueh](https://forums.buildingsmart.org/u/cmellueh)\ **Replies:** 2\ **Last updated:** [September 4, 2025, 12:13pm UTC](https://forums.buildingsmart.org/t/bsdd-toolkit-opensource-bsdd-json-editor/6277 "2025-09-04T12:13:52Z")
Hello buildingSMART community, I created the bSDD-Toolkit to make it easier to create and modify bSDD JSON dictionaries without relying on Excel workflows. Key points: Native editing of bSDD JSON using a validated Py… --- ## [Usage of IfcFacilityPartCommon](https://forums.buildingsmart.org/t/usage-of-ifcfacilitypartcommon/6100)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 12\ **Last updated:** [August 21, 2025, 5:20pm UTC](https://forums.buildingsmart.org/t/usage-of-ifcfacilitypartcommon/6100 "2025-08-21T17:20:30Z")
In the US, we’ve proposed the following update to hierarchical structure for bridges: I am trying to confirm that this is permissible under the schema and the AbV. The question is whether this is an acceptable use of… --- ## [Clarification IfcRelAssignsToActor\> ActingRole and IfcPerson/IfcOrganization\>Role](https://forums.buildingsmart.org/t/clarification-ifcrelassignstoactor-actingrole-and-ifcperson-ifcorganization-role/6198)
**Author:** [@Dimitrios](https://forums.buildingsmart.org/u/Dimitrios)\ **Replies:** 0\ **Last updated:** [July 9, 2025, 1:53pm UTC](https://forums.buildingsmart.org/t/clarification-ifcrelassignstoactor-actingrole-and-ifcperson-ifcorganization-role/6198 "2025-07-09T13:53:56Z")
The “5.1.3.22 IfcRelAssignsToActor - IFC 4.3.2 Documentation” relation contains an attribute “ActingRole”. Is that attribute adhering to the roles assigned to “IfcOrganization”/ “IfcPerson” to which the “IfcActor” is ref… --- ## [Pset for external influences (electrical installations of buildings)](https://forums.buildingsmart.org/t/pset-for-external-influences-electrical-installations-of-buildings/6196)
**Author:** [@PepaR](https://forums.buildingsmart.org/u/PepaR)\ **Replies:** 0\ **Last updated:** [July 7, 2025, 6:54am UTC](https://forums.buildingsmart.org/t/pset-for-external-influences-electrical-installations-of-buildings/6196 "2025-07-07T06:54:38Z")
Hello, I would like to ask what property set you use for external influences related standard IEC 60364-5-51 Electrical installations of buildings - Part 5-51: Selection and erection of electrical equipment - Common rul… --- ## [GUIDs in an BIM Project](https://forums.buildingsmart.org/t/guids-in-an-bim-project/2593)
**Author:** [@agron](https://forums.buildingsmart.org/u/agron)\ **Replies:** 29\ **Last updated:** [July 2, 2025, 9:19am UTC](https://forums.buildingsmart.org/t/guids-in-an-bim-project/2593 "2025-07-02T09:19:51Z")
Hello community, At which level does the validity of a GUID between stakeholders beginn? Since in an IFC File, everything has this unique number (not only objects), i was wondering how can this be implemented throughout… --- ## [IFC class for earthing rod](https://forums.buildingsmart.org/t/ifc-class-for-earthing-rod/5632)
**Author:** [@namio.sousa](https://forums.buildingsmart.org/u/namio.sousa)\ **Replies:** 4\ **Last updated:** [June 26, 2025, 7:55am UTC](https://forums.buildingsmart.org/t/ifc-class-for-earthing-rod/5632 "2025-06-26T07:55:55Z")
Is there any IFC class to classify an earthing rod? --- ## [Door: OverallHeight](https://forums.buildingsmart.org/t/door-overallheight/6123)
**Author:** [@PepaR](https://forums.buildingsmart.org/u/PepaR)\ **Replies:** 3\ **Last updated:** [June 4, 2025, 10:00am UTC](https://forums.buildingsmart.org/t/door-overallheight/6123 "2025-06-04T10:00:41Z")
Hello, I would like ask what exactly is OverallHeight, please? Is it Height A, B, C, D or E? --- ## [Door: Clear Width and Height](https://forums.buildingsmart.org/t/door-clear-width-and-height/6124)
**Author:** [@PepaR](https://forums.buildingsmart.org/u/PepaR)\ **Replies:** 2\ **Last updated:** [June 4, 2025, 9:00am UTC](https://forums.buildingsmart.org/t/door-clear-width-and-height/6124 "2025-06-04T09:00:35Z")
Hello, I would like ask what is your recomendation how to get clear width and height for door, please? --- ## [Reinforced Concrete in IFC4.3.2.0 AbV](https://forums.buildingsmart.org/t/reinforced-concrete-in-ifc4-3-2-0-abv/6095)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 2\ **Last updated:** [May 8, 2025, 7:01am UTC](https://forums.buildingsmart.org/t/reinforced-concrete-in-ifc4-3-2-0-abv/6095 "2025-05-08T07:01:50Z")
Don’t we have a consensus and definition (within the AbV and RV) of how steel reinforcing for concrete relates to the concrete elements it is reinforcing? Which IfcRel is to be used? Is the reinforcing meant to aggregate… --- ## [IFC materials](https://forums.buildingsmart.org/t/ifc-materials/4861)
**Author:** [@pilarjimenez](https://forums.buildingsmart.org/u/pilarjimenez)\ **Replies:** 4\ **Last updated:** [April 22, 2025, 10:16am UTC](https://forums.buildingsmart.org/t/ifc-materials/4861 "2025-04-22T10:16:36Z")
When a user of IFC models without being an expert in the schematic wants to obtain a list of all the materials applied in the multiple ifc files that make up a model, which entities should he call? In the 4x3 schema ther… --- ## [Suggested approach for modelling a blockwork quay wall](https://forums.buildingsmart.org/t/suggested-approach-for-modelling-a-blockwork-quay-wall/6045)
**Author:** [@DanPeel](https://forums.buildingsmart.org/u/DanPeel)\ **Replies:** 1\ **Last updated:** [March 31, 2025, 12:50pm UTC](https://forums.buildingsmart.org/t/suggested-approach-for-modelling-a-blockwork-quay-wall/6045 "2025-03-31T12:50:25Z")
I am delivering a shipyard project in ifc 4.3 where we have several blockwork type quay walls. These walls are constructed from pre-cast concrete blocks each weighing around 70 tonnes. Each block is treated as its own en… --- ## [Best IFC classification for a reducing coupling](https://forums.buildingsmart.org/t/best-ifc-classification-for-a-reducing-coupling/5963)
**Author:** [@namio.sousa](https://forums.buildingsmart.org/u/namio.sousa)\ **Replies:** 3\ **Last updated:** [March 11, 2025, 3:40pm UTC](https://forums.buildingsmart.org/t/best-ifc-classification-for-a-reducing-coupling/5963 "2025-03-11T15:40:31Z")
The IfcPipeFittingTypeEnum gives us the value CONNECTOR to classify a coupling used to join two pipe segments. However, if I have a reducing coupling made of the same material (PVC), should it still be classified as a CO… --- ## [Software for creating bSDD JSON](https://forums.buildingsmart.org/t/software-for-creating-bsdd-json/5976)
**Author:** [@cmellueh](https://forums.buildingsmart.org/u/cmellueh)\ **Replies:** 4\ **Last updated:** [February 28, 2025, 10:13am UTC](https://forums.buildingsmart.org/t/software-for-creating-bsdd-json/5976 "2025-02-28T10:13:08Z")
Hi, i want to create a bSDD to communicate our object/attribute requirements better with our partners. Is there a software with a GUI that is made for creating bSDD json files so i can import them into the manage.bsdd p… --- ## [Status of IfcPileConstruction](https://forums.buildingsmart.org/t/status-of-ifcpileconstruction/5911)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 15\ **Last updated:** [February 12, 2025, 9:14am UTC](https://forums.buildingsmart.org/t/status-of-ifcpileconstruction/5911 "2025-02-12T09:14:54Z")
In the current online specification for IfcPile, IfcPile.ConstructionType is “informally” listed as deprecated, but IfcPileConstructionEnum itself is NOT indicated as deprecated. Is this an error either way? While the … [Next page](https://forums.buildingsmart.org/c/users/6.md?page=1)