# MVDs
**URL:** https://forums.buildingsmart.org/c/users/mvds/16.md
[Latest](https://forums.buildingsmart.org/latest.md) · [Categories](https://forums.buildingsmart.org/categories.md) · [Tags](https://forums.buildingsmart.org/tags.md)
---
## [About the MVDs category](https://forums.buildingsmart.org/t/about-the-mvds-category/34)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\
**Replies:** 0
This category is for discussions on the use of existing MVDs and proposals for new MVDs to address workflows.
---
## [IFC Design Transfer View and roundtrip](https://forums.buildingsmart.org/t/ifc-design-transfer-view-and-roundtrip/1384)
**Author:** [@Nordlenningen](https://forums.buildingsmart.org/u/Nordlenningen)\
**Replies:** 5\
**Last updated:** [June 18, 2021, 12:37am UTC](https://forums.buildingsmart.org/t/ifc-design-transfer-view-and-roundtrip/1384 "2021-06-18T00:37:08Z")
Hi all Is anyone here thinking about or working with IFC roundtrip in any way, or is this a “no-go-zone” for buildingSMART? I see there is a change in the semantics of the scope of IFC4 DTV from excluding “round-trip s…
---
## [IFC4 DesignTransferView Geometry](https://forums.buildingsmart.org/t/ifc4-designtransferview-geometry/3116)
**Author:** [@Michael](https://forums.buildingsmart.org/u/Michael)\
**Replies:** 0\
**Last updated:** [November 10, 2020, 3:20pm UTC](https://forums.buildingsmart.org/t/ifc4-designtransferview-geometry/3116 "2020-11-10T15:20:32Z")
Hi, Which geometry descriptions are allowed for a DesignTransfer? Are B-Rep allowed? In my understanding, a transfer via B-Rep loses all parametrics and the elements cannot be changed in other software. What does this …
---
## [Use model view definition](https://forums.buildingsmart.org/t/use-model-view-definition/2461)
**Author:** [@KavehAll](https://forums.buildingsmart.org/u/KavehAll)\
**Replies:** 4\
**Last updated:** [March 5, 2020, 10:47pm UTC](https://forums.buildingsmart.org/t/use-model-view-definition/2461 "2020-03-05T22:47:12Z")
Hi, I used IfcDoc to develop a custom mvd for testing purposes, which right now contains only IfcDoor entity. My question is : How can I use my mvd to export for example in Revit (or other software) to be able to see t…
---
## [Property Sets for IfcContext / IfcProject in IFC4](https://forums.buildingsmart.org/t/property-sets-for-ifccontext-ifcproject-in-ifc4/1428)
**Author:** [@RBorowan](https://forums.buildingsmart.org/u/RBorowan)\
**Replies:** 4\
**Last updated:** [June 12, 2019, 3:59pm UTC](https://forums.buildingsmart.org/t/property-sets-for-ifccontext-ifcproject-in-ifc4/1428 "2019-06-12T15:59:10Z")
Hello! Since this is my first post in this forum I would like to use the opportunity to do a very quick introduction first: I am part of the IFC4precast project group which is working on a new MVD based on IFC4 to handl…
---
## [Reference View 1.2 (based on IFC4 ADD2 TC1)](https://forums.buildingsmart.org/t/reference-view-1-2-based-on-ifc4-add2-tc1/965)
**Author:** [@jwouellette](https://forums.buildingsmart.org/u/jwouellette)\
**Replies:** 1\
**Last updated:** [February 5, 2019, 7:53pm UTC](https://forums.buildingsmart.org/t/reference-view-1-2-based-on-ifc4-add2-tc1/965 "2019-02-05T19:53:45Z")
Please find the documentation for the Reference View 1,2, based on IFC4 ADD2 TC1 here: http://standards.buildingsmart.org/MVD/RELEASE/IFC4/ADD2\_TC1/RV1\_2/HTML/ For those who wish to have a local version, please downloa…
---
## [Possible use case for checking the BIM model](https://forums.buildingsmart.org/t/possible-use-case-for-checking-the-bim-model/694)
**Author:** [@b.schock](https://forums.buildingsmart.org/u/b.schock)\
**Replies:** 0\
**Last updated:** [November 26, 2018, 4:55pm UTC](https://forums.buildingsmart.org/t/possible-use-case-for-checking-the-bim-model/694 "2018-11-26T16:55:57Z")
Dear all I’ve got a request from our local standardisation authority: Does anyone know whether there is already a standard for adherence to the “spatial use data for the energy and energy Building technology”