Basic services piping planning

Coordinate drainage and wastewater early in the model - before clashes in risers and below ceilings trigger costly design changes.

Starting point

• Roof drainage, downpipes, and wastewater are often planned late; clashes with structure and MEP become hard to resolve.
• Balcony drainage is frequently forgotten and leads to change orders during execution planning.

Goal & benefit

• Model the drainage path from roof and balcony through downpipes to wastewater mains early and traceably.
• Check risers, penetrations, and space requirements before detailed planning.

Process

1. Model tapered insulation on flat roof and balcony with falls; derive drainage points from the fall layout.
2. Route downpipes from roof and balconies to the main collector.
3. Coordinate wastewater pipes in risers and main routes; check for clashes in the federated model.

Outcome

• Coordinated drainage and wastewater route as the basis for detailed sanitary planning.

Deliverables

• Architecture and MEP models with IfcProject, IfcSite, IfcBuilding, and IfcBuildingStorey
• IfcCovering with PredefinedType=ROOFING - tapered insulation on flat roof and balcony with falls
• IfcPipeSegment with Reference=FL - downpipes from roof and balconies
• IfcPipeSegment with Reference=AW, WW, or ENT - wastewater pipes in risers and main routes
• IfcSpace with PredefinedType=EXTERNAL - balconies and terraces as drainage starting points