# Activities & Projects **URL:** https://forums.buildingsmart.org/c/projects/77.md [Latest](https://forums.buildingsmart.org/latest.md) · [Categories](https://forums.buildingsmart.org/categories.md) · [Tags](https://forums.buildingsmart.org/tags.md) --- ## [About the Activities & Projects category](https://forums.buildingsmart.org/t/about-the-activities-projects-category/3373)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 0
Discussions about all the various activities and projects at buildingSMART International. Includes proposed activities as well as official projects currently underway (schemas, IDM, and data exchange developments) across… --- ## [Bottlenecks faced by BIM Professioonals](https://forums.buildingsmart.org/t/bottlenecks-faced-by-bim-professioonals/6633)
**Author:** [@muthu\_pragatheswaran](https://forums.buildingsmart.org/u/muthu_pragatheswaran)\ **Replies:** 0\ **Last updated:** [October 31, 2026, 4:52am UTC](https://forums.buildingsmart.org/t/bottlenecks-faced-by-bim-professioonals/6633 "2026-10-31T04:52:20Z")
I actually have question for BIM Professionals What’s The Most Annoying or like frustrating thing in everyday work ? And how much time does it waste or consume everyday ? --- ## [Storing environmental impact values in IFC](https://forums.buildingsmart.org/t/storing-environmental-impact-values-in-ifc/5239)
**Author:** [@artur\_tomczak](https://forums.buildingsmart.org/u/artur_tomczak)\ **Replies:** 12\ **Last updated:** [April 21, 2026, 2:01pm UTC](https://forums.buildingsmart.org/t/storing-environmental-impact-values-in-ifc/5239 "2026-04-21T14:01:58Z")
As a Strategic Sustainability Group of buildingSMART, we faced the challenge of storing tabular values in IFC models. While this is possible with IFC, we encountered problems with the usability of such data given the lim… --- ## [ifcSpatialZone further Types](https://forums.buildingsmart.org/t/ifcspatialzone-further-types/4134)
**Author:** [@mirbek.bekboliev](https://forums.buildingsmart.org/u/mirbek.bekboliev)\ **Replies:** 7\ **Last updated:** [April 15, 2026, 6:14pm UTC](https://forums.buildingsmart.org/t/ifcspatialzone-further-types/4134 "2026-04-15T18:14:10Z")
Dear IFC-Team, I’m writing on behalf of bSI ifcSpatialZone WG in Building Room. We have reviewed comments on further important types related to Spatial Zones from chapters (Germany with Working Groups for Hospital Const… --- ## [ReinforcingBar Lap Lengths](https://forums.buildingsmart.org/t/reinforcingbar-lap-lengths/6430)
**Author:** [@Simon](https://forums.buildingsmart.org/u/Simon)\ **Replies:** 1\ **Last updated:** [March 6, 2026, 10:16pm UTC](https://forums.buildingsmart.org/t/reinforcingbar-lap-lengths/6430 "2026-03-06T22:16:17Z")
Can anybody recommend a Pset for defining the a reinforcing bar lap length start and end values? Presently I adopt a user-defined Pset within IfcGroup which is used to group bars of the same type in a range. --- ## [There is a need for a reinforcing bar group](https://forums.buildingsmart.org/t/there-is-a-need-for-a-reinforcing-bar-group/5688)
**Author:** [@Ikenna](https://forums.buildingsmart.org/u/Ikenna)\ **Replies:** 6\ **Last updated:** [March 6, 2026, 2:54pm UTC](https://forums.buildingsmart.org/t/there-is-a-need-for-a-reinforcing-bar-group/5688 "2026-03-06T14:54:55Z")
The proposal There is a need for a reinforcing bar group. Suggested names: IfcReinforcingBargroup or IfcReinforcingBarDistribution. Bar group as an entity Rebar grouping is a well-known technique in reinforcement det… --- ## [Clash Template like IDS ?](https://forums.buildingsmart.org/t/clash-template-like-ids/6311)
**Author:** [@Jocelin](https://forums.buildingsmart.org/u/Jocelin)\ **Replies:** 0\ **Last updated:** [October 19, 2025, 12:59am UTC](https://forums.buildingsmart.org/t/clash-template-like-ids/6311 "2025-10-19T00:59:32Z")
Hi, IDS have been develloped to check the quality of data inside IFC. But, it only focus on the data and not 3D data. With the IDS Facet, we now have a standardized way to select for object in model. I know that we can… --- ## [Video Tutorials for BonsaiBIM: a powerful BIM/CAD plugin for Blender](https://forums.buildingsmart.org/t/video-tutorials-for-bonsaibim-a-powerful-bim-cad-plugin-for-blender/6257)
**Author:** [@Theoryshaw](https://forums.buildingsmart.org/u/Theoryshaw)\ **Replies:** 1\ **Last updated:** [September 22, 2025, 5:22pm UTC](https://forums.buildingsmart.org/t/video-tutorials-for-bonsaibim-a-powerful-bim-cad-plugin-for-blender/6257 "2025-09-22T17:22:49Z")
As you may have seen on the OSArch forum, I’ve just released a new set of video tutorials for Bonsai (formerly BlenderBIM). If you’re interested, this series takes you from the basics of Blender through to creating a co… --- ## [Unique IDs in IFC5](https://forums.buildingsmart.org/t/unique-ids-in-ifc5/6183)
**Author:** [@Airy59](https://forums.buildingsmart.org/u/Airy59)\ **Replies:** 1\ **Last updated:** [August 23, 2025, 1:59pm UTC](https://forums.buildingsmart.org/t/unique-ids-in-ifc5/6183 "2025-08-23T13:59:28Z")
IFC5 alpha proposes to use unique IDs for “paths”. This choice suggests that unique name assumption is intended (different paths necessarily denote different “things”). Is that the intent? --- ## [ROI regarding detailed element properties and material layers in a BIM model (e.g., Revit)](https://forums.buildingsmart.org/t/roi-regarding-detailed-element-properties-and-material-layers-in-a-bim-model-e-g-revit/6248)
**Author:** [@MoAli](https://forums.buildingsmart.org/u/MoAli)\ **Replies:** 1\ **Last updated:** [August 21, 2025, 7:53am UTC](https://forums.buildingsmart.org/t/roi-regarding-detailed-element-properties-and-material-layers-in-a-bim-model-e-g-revit/6248 "2025-08-21T07:53:44Z")
In your experience, is the additional time and effort spent adding detailed element properties and material layers in a BIM model (e.g., Revit) generally worth it in terms of the accuracy and reliability of quantity take… --- ## [IfcConstructionProductResource limitation use case in Cost Norms/ Resource Built-up](https://forums.buildingsmart.org/t/ifcconstructionproductresource-limitation-use-case-in-cost-norms-resource-built-up/5754)
**Author:** [@Dimitrios](https://forums.buildingsmart.org/u/Dimitrios)\ **Replies:** 0\ **Last updated:** [November 11, 2024, 10:18pm UTC](https://forums.buildingsmart.org/t/ifcconstructionproductresource-limitation-use-case-in-cost-norms-resource-built-up/5754 "2024-11-11T22:18:57Z")
I have posted a detailed issue in the Git Repo IfcConstructionProductResource limitation use case in Cost Norms/ Resource Built-up · Issue #911 · buildingSMART/IFC4.3.x-development · GitHub with respect to a recent modif… --- ## [ISO 7817-3 (under development) and IDS](https://forums.buildingsmart.org/t/iso-7817-3-under-development-and-ids/5533)
**Author:** [@daviddelven](https://forums.buildingsmart.org/u/daviddelven)\ **Replies:** 6\ **Last updated:** [October 23, 2024, 1:52pm UTC](https://forums.buildingsmart.org/t/iso-7817-3-under-development-and-ids/5533 "2024-10-23T13:52:01Z")
Given that ‘ISO 7817 Part 3 will be a standard on a schema to enable a machine-readable definition of the level of information need framework’, has bSI ever mentioned a connection with the IDS standard? Recently, @berlo… --- ## [PropertySets of IfcSpace](https://forums.buildingsmart.org/t/propertysets-of-ifcspace/3997)
**Author:** [@ElisEck](https://forums.buildingsmart.org/u/ElisEck)\ **Replies:** 9\ **Last updated:** [August 14, 2024, 5:33am UTC](https://forums.buildingsmart.org/t/propertysets-of-ifcspace/3997 "2024-08-14T05:33:44Z")
The IfcSpace entity contains numerous PropertySets which are either defined on the entity itself or which it inherits. In the field of thermal load there are 5 PropertySets defined at the space and two more inherited fro… --- ## [Need Guidance on Implementing OpenBIM Standards in Large Scale Infrastructure Projects](https://forums.buildingsmart.org/t/need-guidance-on-implementing-openbim-standards-in-large-scale-infrastructure-projects/5470)
**Author:** [@tysonzachh](https://forums.buildingsmart.org/u/tysonzachh)\ **Replies:** 0\ **Last updated:** [June 26, 2024, 12:48pm UTC](https://forums.buildingsmart.org/t/need-guidance-on-implementing-openbim-standards-in-large-scale-infrastructure-projects/5470 "2024-06-26T12:48:56Z")
Hello there, I am working on a large scale infrastructure project and we are looking to adopt OpenBIM standards to improve collaboration; data exchange; and project efficiency. Our project involves multiple stakeholder… --- ## [SpaceBoundaries - change IfcRelSpaceBoundary to IfcSpaceBoundary](https://forums.buildingsmart.org/t/spaceboundaries-change-ifcrelspaceboundary-to-ifcspaceboundary/5150)
**Author:** [@ElisEck](https://forums.buildingsmart.org/u/ElisEck)\ **Replies:** 4\ **Last updated:** [June 13, 2024, 12:33pm UTC](https://forums.buildingsmart.org/t/spaceboundaries-change-ifcrelspaceboundary-to-ifcspaceboundary/5150 "2024-06-13T12:33:18Z")
Although the topic of space boundaries has unfortunately not made it into the new IFC4.3 release (see old thread), I would like to place it here as an issue for the next release: The entity for space boundaries IfcRelSp… --- ## [Extension of IFC data schema in the Hydropower Industry](https://forums.buildingsmart.org/t/extension-of-ifc-data-schema-in-the-hydropower-industry/5383)
**Author:** [@shihangzhang](https://forums.buildingsmart.org/u/shihangzhang)\ **Replies:** 3\ **Last updated:** [May 29, 2024, 4:59pm UTC](https://forums.buildingsmart.org/t/extension-of-ifc-data-schema-in-the-hydropower-industry/5383 "2024-05-29T16:59:30Z")
Hi everyone, I believe that the ongoing extension of IFC data schema into the infrastructure sector is a very valuable endeavor. In the hydropower and water conservancy industry, there are still some highly specialized… --- ## [Creating object data history](https://forums.buildingsmart.org/t/creating-object-data-history/5317)
**Author:** [@fernandogb](https://forums.buildingsmart.org/u/fernandogb)\ **Replies:** 1\ **Last updated:** [April 18, 2024, 5:36pm UTC](https://forums.buildingsmart.org/t/creating-object-data-history/5317 "2024-04-18T17:36:58Z")
Greetings! I’m working on process mapping in IFC. A recurring problem is the necessity to represent object data that varies throughout time. In some cases, only the current value of the data is relevant, but commonly is… --- ## [suggestion: new property for place of installation (Einbauort)](https://forums.buildingsmart.org/t/suggestion-new-property-for-place-of-installation-einbauort/4067)
**Author:** [@hkreienbrink](https://forums.buildingsmart.org/u/hkreienbrink)\ **Replies:** 8\ **Last updated:** [April 17, 2024, 10:54am UTC](https://forums.buildingsmart.org/t/suggestion-new-property-for-place-of-installation-einbauort/4067 "2024-04-17T10:54:13Z")
Hi I am working in a bS Germany group where we define a MVD for model based quantity take off (for Architecture). We are working together with architects, construction companies, QTO engineers. The goal is to define a … --- ## [Building envelopes in IFC](https://forums.buildingsmart.org/t/building-envelopes-in-ifc/5191)
**Author:** [@cmaurer](https://forums.buildingsmart.org/u/cmaurer)\ **Replies:** 3\ **Last updated:** [March 7, 2024, 12:25pm UTC](https://forums.buildingsmart.org/t/building-envelopes-in-ifc/5191 "2024-03-07T12:25:48Z")
Description of the issue Many glass panes today have spectrally selective coatings. This means that architects/planners/engineers need the transmittance and reflectance of each glass pane spectrally resolved to calculate… --- ## [IfcSpace with related BuildingStorey, how to find ?](https://forums.buildingsmart.org/t/ifcspace-with-related-buildingstorey-how-to-find/5187)
**Author:** [@andreasd](https://forums.buildingsmart.org/u/andreasd)\ **Replies:** 1\ **Last updated:** [March 4, 2024, 4:46pm UTC](https://forums.buildingsmart.org/t/ifcspace-with-related-buildingstorey-how-to-find/5187 "2024-03-04T16:46:24Z")
Hello, I open my Ifc with an editor Notepad++ so i wanna find a IfcSpace by RoomNumber, that works fine f.e. “M031U1030” but how can i find the releated Building Storey ? Thank you for any information KR Andreas … --- ## [PredefinedType: USERDEFINED / NOTDEFINED](https://forums.buildingsmart.org/t/predefinedtype-userdefined-notdefined/4885)
**Author:** [@TidianeDIA](https://forums.buildingsmart.org/u/TidianeDIA)\ **Replies:** 4\ **Last updated:** [January 30, 2024, 11:38pm UTC](https://forums.buildingsmart.org/t/predefinedtype-userdefined-notdefined/4885 "2024-01-30T23:38:14Z")
Hello, I don’t see how to correctly use the values of the “PredifinedType” attribute in IFC. I had understood that when it’s set to USERDEFINED, it’s for example the “ObjectType” attribute that should be used to define… --- ## [Uppercase instead of PascalCase in IDS?](https://forums.buildingsmart.org/t/uppercase-instead-of-pascalcase-in-ids/4655)
**Author:** [@daviddelven](https://forums.buildingsmart.org/u/daviddelven)\ **Replies:** 0\ **Last updated:** [March 11, 2023, 11:45am UTC](https://forums.buildingsmart.org/t/uppercase-instead-of-pascalcase-in-ids/4655 "2023-03-11T11:45:40Z")
Is there some reason to keep UPPERCASE instead of PascalCase for a class identification within the IDS specification, as shown in the Candidate Standard Report - January 2023? --- ## [IFC Data capture for Sustainability](https://forums.buildingsmart.org/t/ifc-data-capture-for-sustainability/4264)
**Author:** [@Ajay](https://forums.buildingsmart.org/u/Ajay)\ **Replies:** 3\ **Last updated:** [June 23, 2023, 8:58am UTC](https://forums.buildingsmart.org/t/ifc-data-capture-for-sustainability/4264 "2023-06-23T08:58:04Z")
New topic: IFC Sustainability Data Parameters Recommendations for additional Attribute Data Fields for Sustainability parameters. Group#1: Weather elements Sustainability\_Weather\_Temperature Sustainability\_Weather\_Hu… --- ## [IFC 4.3 : bridge reinforcement layers unsuitable and impatriable](https://forums.buildingsmart.org/t/ifc-4-3-bridge-reinforcement-layers-unsuitable-and-impatriable/4750)
**Author:** [@JeanGUAL](https://forums.buildingsmart.org/u/JeanGUAL)\ **Replies:** 6\ **Last updated:** [June 19, 2023, 11:01am UTC](https://forums.buildingsmart.org/t/ifc-4-3-bridge-reinforcement-layers-unsuitable-and-impatriable/4750 "2023-06-19T11:01:53Z")
Hello Everybody, We implement IFC bridge in our bridge calculation software and we have found that for the reinforcement of slabs and box-girders nothing in the IFC is provided to define reinforcement layers in a global… --- ## [RFI: Urban and Land Management think-tank/room/group](https://forums.buildingsmart.org/t/rfi-urban-and-land-management-think-tank-room-group/4754)
**Author:** [@daviddelven](https://forums.buildingsmart.org/u/daviddelven)\ **Replies:** 2\ **Last updated:** [May 30, 2023, 8:17am UTC](https://forums.buildingsmart.org/t/rfi-urban-and-land-management-think-tank-room-group/4754 "2023-05-30T08:17:57Z")
Hello bS friends. Within the buildingSMART Spain member’s community, there are some interesting big-player public actors (mainly city councils or regional/national governments) that are playing an important role in the d… --- ## [From Drawings to Digital Technology: How BIM Works?](https://forums.buildingsmart.org/t/from-drawings-to-digital-technology-how-bim-works/4766)
**Author:** [@steinryan28](https://forums.buildingsmart.org/u/steinryan28)\ **Replies:** 1\ **Last updated:** [May 29, 2023, 7:09pm UTC](https://forums.buildingsmart.org/t/from-drawings-to-digital-technology-how-bim-works/4766 "2023-05-29T19:09:09Z")
How does Building Information Modeling (BIM) function in the transition from drawings to digital technology? --- ## [IDS for defining a subset?](https://forums.buildingsmart.org/t/ids-for-defining-a-subset/4756)
**Author:** [@rok](https://forums.buildingsmart.org/u/rok)\ **Replies:** 0\ **Last updated:** [May 16, 2023, 1:14pm UTC](https://forums.buildingsmart.org/t/ids-for-defining-a-subset/4756 "2023-05-16T13:14:24Z")
We are planning to use IDS in my company and thinking how we integrate it in our existing systems. So what I do not really understand how I can control what is the user allowed. So for example some objects or propertys … --- ## [Register for the buildingSMART International Webinar - Building Energy Modelling IDM Report: Expert Panel Call for Participation](https://forums.buildingsmart.org/t/register-for-the-buildingsmart-international-webinar-building-energy-modelling-idm-report-expert-panel-call-for-participation/3239)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 14\ **Last updated:** [March 23, 2023, 8:07am UTC](https://forums.buildingsmart.org/t/register-for-the-buildingsmart-international-webinar-building-energy-modelling-idm-report-expert-panel-call-for-participation/3239 "2023-03-23T08:07:39Z")
bSI invites industry professionals (designers, owners/operators, consultants, academia, regulators, software vendors and Green Building Certification Institutions) with expertise and vested interest in the domain of Buil… --- ## [Additional BEM/BPSA technologies/platforms](https://forums.buildingsmart.org/t/additional-bem-bpsa-technologies-platforms/4502)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 1\ **Last updated:** [March 13, 2023, 2:32pm UTC](https://forums.buildingsmart.org/t/additional-bem-bpsa-technologies-platforms/4502 "2023-03-13T14:32:14Z")
If there are any additional building energy modeling/building performance simulation and analysis (BEM/BPSA) software platforms that are not mentioned in the Report, please include them (and links to them) as replies to … --- ## [Additional BEM/BPSA Standards/Guidelines](https://forums.buildingsmart.org/t/additional-bem-bpsa-standards-guidelines/4503)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\ **Replies:** 0\ **Last updated:** [November 21, 2022, 5:27pm UTC](https://forums.buildingsmart.org/t/additional-bem-bpsa-standards-guidelines/4503 "2022-11-21T17:27:25Z")
If there are any additional BEM/BPSA standards/guidelines not mentioned in the Report, please include them (along with links) as replies to this topic. [Next page](https://forums.buildingsmart.org/c/projects/77.md?page=1)