IFC4.3.x-development

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Actor assignment concept cannot assign actors to type objects

3

The Actor assignment concept currently describes how to assign actors to objects. This is great, however, more useful than individual objects is type objects. For example, an actor with a...

Moult

Standardisation of colour properties

2

A luminaire control register typically contains the colour of the light fitting. I was looking for the appropriate property to put this in and found a lot of colour properties...

Moult

Semantic meaning of cardinality of IfcPropertySet association

1

IfcPropertySet.DefinesOccurrence is defined as SET [0:?] OF [IfcRelDefinesByProperties](http://localhost:5000/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelDefinesByProperties.htm) FOR RelatingPropertyDefinition Scenario 1: IfcWallX IfcPropertySetX IfcSlabX IfcPropertySetX Scenario 2: IfcWallX, IfcSlabX IfcPropertySetX What's the difference between the two scenarios? If SET...

Moult

Inconsistency in cardinality of property sets vs material properties

1

This situation is valid for IfcPropertySet: IfcWallX, IfcSlabX IfcPropertySetX I.e. a single property set may be shared by multiple entities. Material properties cannot be shared. IfcMaterial -> IfcMaterialProperties I suspect...

Moult

Are there ISO standards (perhaps 10303-41 which I don't have access to, but originally defined organization_role and person_role) which gives better definitions for the types of roles? Right now the...

Moult

Proposal to add Pset_LightFixtureTypeCommon.Dimmable

1

A boolean property to determine whether or not a a lamp is dimmable.

Moult

Standardise cardinality of material set items attribute

3

MaterialLayerSet has MaterialLayers | LIST [1:?] OF IfcMaterialLayer MaterialProfileSet has MaterialProfiles | LIST [1:?] OF IfcMaterialProfile MaterialConstituentSet has MaterialConstituents | OPTIONAL SET [1:?] OF IfcMaterialConstituent Why are constituents special? Why...

Moult

IfcExternalInformation like IfcDocumentInformation, IfcLibraryInformation, IfcClassification has an inherited Location. The references to the document / library / classification, (i.e. subclasses of IfcExternalReference) all also have an inherited Location. The external...

Moult

Is it unusual that `IfcMaterial` doesn't show up in the search?

1

Is it unusual that `IfcMaterial` doesn't show up in the search? 

theoryshaw

https support for ifc43-docs

1

Not that there's much dynamic apart from the search, but it would be good to have as a standard web sysadmin policy. Was reported by a user.

Moult