IfcValidator

This is a BIMserver plugin that checks Ifc2x3tc1 models for common requirements.

Note: This plugin needs BIMserver 1.5

The plugin generates Extended Data according to the following Validation Report format.

For now, this plugin only implements checks that can be done with only the IFC file, so it will not read external files for cross-checking data.

TODO

• Implement for IFC4 as well

Checks

A list of checks that have been identified by asking people from the building industry and reading Dutch "norm" documents that seem computer checkable.

Check	Implemented	Part of
Exactly 1 IfcProject		RVB_BIM_Norm 1.1
IfcProject has at least one representation where the TrueNorth attribute has been set		RVB_BIM_Norm 1.1
IfcProject has a length unit set		RVB_BIM_Norm 1.1
Length unit is either in Meters or Millimeters		RVB_BIM_Norm 1.1
IfcProject has an area unit		RVB_BIM_Norm 1.1
Area unit is in m2		RVB_BIM_Norm 1.1
IfcProject has a volume unit		RVB_BIM_Norm 1.1
Volume unit is in m3		RVB_BIM_Norm 1.1
Exactly 1 IfcSite		RVB_BIM_Norm1.1
[Dutch]Kadastrale aanduidingen		RVB_BIM_Norm 1.1 2.2.7.2
IfcSite has lattitude		RVB_BIM_Norm 1.1
IfcSite has longitude		RVB_BIM_Norm 1.1
IfcSite has elevation		RVB_BIM_Norm 1.1
Has at least one IfcBuilding		RVB_BIM_Norm 1.1
Has at least one IfcBuildingStorey		RVB_BIM_Norm 1.1 2.2.7.4
Building storeys naming according to RVB_BIM_Norm		RVB_BIM_Norm 1.1
[link]Building storeys with increasing numbers have increased center		RVB_BIM_Norm 1.1
All objects must be hierarchically structured to be in a building storey		RVB_BIM_Norm 1.1
Use a special "cube" to identify the origin of the model
Check whether the right Ifc entitities have been used based on geometric ratios
No use of IfcProxy
Every object should have some kind of identification
No 2 objects can be modelled the same, be at the same place or represent the same thing
Clash detection

Further explanations

Geometric ratios

This check uses the geometry of an object to check whether the right IFC type has been used. For example, IfcSlab objects are usually flat surfaces that ware much wider then they are high. Columns are usually slender compared to their length etc...

To be able to do these kind of comparisons it would be very useful to have oriented bounding boxes available (those are not available in BImserver at the moment).

Eample

Screenshot from a validationreport generated by this plugins, shown in BIMvie.ws