Urban design mass study

Model gross volumes per storey and extract quantities for the urban design mass study.

Starting point

• Mass studies and zoning compliance require gross areas and volumes per storey.
• Manual area and volume tables from volume models are error-prone and slow option comparison.

Goal & benefit

• Maintain gross volumes early in the model, storey by storey.
• Derive area, volume, and height per unit or programme share directly from the model.

Process

1. Provide gross volumes per storey according to the modelling guideline.
2. Optionally separate by flats, units, or public space and set LongName according to the brief.
3. Evaluate areas, volumes, and heights per storey and compare options.

Outcome

• Traceable gross quantities per storey and programme share as the basis for the mass study.

Deliverables

• Architecture model with IfcProject, IfcSite, IfcBuilding, and IfcBuildingStorey
• Gross volumes per storey modelled as IfcSpace with PredefinedType=USERDEFINED and ObjectType=Bruttovolumen
• Basement from underside of base slab to top of finished floor; upper storeys from top of finished floor to top of next finished floor or roof
• LongName with unit or use designation according to the brief; optional separation by flats, units, or public space
• GrossFloorArea, GrossVolume, and Height per gross volume