Use Cases

Model Checking” use-cases from the Dutch AEC industry

This page describes some “Model Checking” Use-cases from the Dutch AEC industry. These use cases are now realized with Solibri, Tekla BIMSight or other custom build software tools. The goals of this chapter is to inspire mvdXML developers (or any other developer) to improve the MVD standard.

Use case 1: Psets Are all Psets filled in, and are they correct?

Use case 2: Masonry supplier Is the type of masonry bond added to the wall as a property (and does the value come from a prede-fined enumeration).

Use case 3: Fire resistant doors Are all doors between compartments of the building fire resistant? And is the fire rating in minutes?

Use case 4: Is there a door? Does every space (IfcSpace), except service shafts, have a minimum of one door (IfcDoor)?

Use case 5: Is an object on the storey it should be? Check if (/how) an IFC object is related to an IfcBuildingStorey. Then check if the highest geometrical and lowest coordinate of the object. The difference between these coordinates is the height of the object. This should be lower than the floorheight of the related floor. This use case is to check if facades and walls are split up between storeys rather than crossing over multiple storeys.

Use case 6: Elevation Check if the absolute elevation of an object is between the lower and upper boundaries of the related buildingstorey.

Use case 7: Material Do all objects (IfcProducts) have materials?

Use case 8: classification consistency Does the classification code (Uniclass, omniclass, NlSfb, etc.) match the IFC object? For example, is an object with an OmniClass specification ‘Door’ actually an IfcDoor in the model? Or a Dutch example, is an object with classification code ‘21’ actually an IfcWall in the model?

Use case 9: program requirements Does the design (/model) comply with the program requirements? For example, do all spaces meet the minimum surface area and volume? Are the toilets not located too far away from the meeting rooms?

Use case 10: Breps versus extrusions Are there any Breps or extrusions in the geometry of the model?