I-Sokolov

References, Insertion blocks, typical floors

9

99% of floors in the condo design are the same. Duplicating them - increase file size with factor 99 - make impossible modification after Design Transfer View STEP ed 3...

IfcOrientationExpression needs better documentation

6

The description does not clarify what are these directions https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/HTML/link/ifcorientationexpression.htm

"late binding" better words

6

I do not like "late binding" term. It confuses me with late binding programming paradigm. Can we look for better one? Some suggestions - dynamic classing, soft classing vs -...

retire RepresentationType

3

Description of the proposal: remove IfcProduct.RepresentationType attribute What do we win: simplify and consistent schema, remove redundant data. All the information may be obtained from classes of IfcRepresentationItems

There are some requests from users to assign materials to wall surface that may be different in different wall sides, spaces and fragments. It may be a physical material (plaster,...

Precison definition should be improved

6

We need more accurate definition for precision. Precision for directions/points and properties are different things. I would suggest: 1) include precision into each unit definition reather than project context 2)...

IfcIndexedPolyCurve should be preferable to IfcPolyline

2

IfcIndexedPolyCurve should bee used everywhere instead of IfcPolyline (or at least allowed togeather with) Particulary it should be used for - IfcAlignment . Axis - IfcSectionedSpine . SpineCurve

IfcLinearPlacement.PlacementMeasuredAlong references to curve, but what coordinate system is used for the curve? I have to search IfcProduct that has the curve in Representations and use ObjectPlacement to have answer....

Is there any reason to define IfcBoxAlignment as text with WR? I would change to enum https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcBoxAlignment.htm