Revit

Preparing Models for Submission (Revit)

Example using Revit Configuration File

  • To place model into the correct location with Architectural, Civil & Structural, Mechanical & Electrical models.

Architectural, Civil & Structural, Mechanical & Electrical model

S2 – Fig 9

  • Element's properties can be assigned while Modelling.

IFC properties

S2 – Fig 10

  • To easily select the elements during IFC-SG Parameters mapping.
  • To filter the views per Agency Submission.
  • To reduce time when Exporting model in IFC format.
  • To easily navigate when Modelling and model auditing.

Revit Workset

S2 – Fig 11

  • Use BIM Interoperability Tools to assign IFC parameters
  • To avoid misspelled IFC parameters (misspelled parameters will not be exported).
  • Faster than manual parameter key-in.
  • Elements will be exported into the correct IFC category.

IFC-SG Mapping

S2 – Fig 12

  • Editing the Configuration File to Adapt In-house Company Properties

S2- Fig 13 Revit Library and Fig 14 Configuration File

                      S2 – Fig 13: Revit Library                                                                             S2 – Fig 14: Configuration File

S2- Fig 15S2 -Fig 16

                      S2 – Fig 15                                                                     S2 – Fig 16

 

Link: IFC-SG Resource Kit

Top 3 Common Modelling Challenges and Solutions (Revit)

Example using Revit Configuration File 

ChallengeImplicationsSolutions

Accidentally spelling IFC property wrongly

e.g.

 IfcTank

 IfcTanl

 ifctank

 Missing data in IFC Avoid manual typing where possible
  • IFC properties cannot be exported
  • Existing in-house properties not mapped properly (to wrong IFC properties), thus also can’t be exported
  • Use BIM Interoperability Tool, select from drop-down list
  • Copy-paste the information from IFC-SG Industry Mapping (.XLS file from GovTech)

ChallengeImplicationsSolutions

Forgetting to update IFC after changes / modifications to model

 Missing data in IFC Check Mapping
  • IFC properties cannot be exported
  • Existing in-house properties not mapped properly (to wrong IFC properties), thus also can’t be exported
  • Redo the mapping
  • Use Schedule to cross-check if all elements were tagged properly
 Avoid manual typing where possible
  • Use BIM Interoperability Tool, select from drop-down list
  • Copy-paste the information from IFC-SG Industry Mapping (.XLS file from GovTech)

ChallengeImplicationsSolutions

Cannot export Revit linked files to a federated IFC (model with multiple link files)

e.g.

MEP sub-discipline models

 Missing data in IFC Today
  • Assigned systems will be lost
  • IFC properties cannot be exported
  • Existing in-house properties not mapped properly (to wrong IFC properties), thus also can’t be exported
  • Tag information after binding models
  • Use Group Models instead of Binding
  • Avoid binding if possible (i.e. export linked files one by one)
 Future
  • Through CORENET X community of practice, we have feedback to Autodesk to enable export of federated IFC
  • Autodesk shared that this is part of the Revit Roadmap and will be included progressively in early 2023