Model Setup
Level Naming and Organisation
Organise levels clearly so storeys can be understood and checked correctly after IFC export.
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IFC+SG · Modelling Guidance
General Modelling Practices
Prepare your BIM model for IFC+SG submission by following common modelling practices for structure, coordinates, naming, model quality, and IFC export readiness.
Model structure
Coordinates
Model quality
IFC readiness
This page covers general modelling practices. For BIM authoring tool–specific guidance, refer to the BIM Authoring Tools guide.
Access the BIM Authoring Tools guide here.
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01 · Model Setup & Structure
Set up the model structure before modelling
Start with clear level naming, spatial structure, and block setup. These items affect IFC export, federation, and CORENET X submission review.
Spatial Structure
Block Mechanism
Understand how architectural, structural, and MEP models should align with the IFC+SG block mechanism.
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02 · Element Modelling & Data
Model elements with the correct information
Use the correct IFC entities, subtype values, and reference documents so model elements carry the information required for IFC+SG submission.
IFC Classification
Use correct IFC entities
Select the correct IFC entity so each model element is recognised and reviewed properly after IFC export.
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IFC Subtype
Predefined Type VS USERDEFINED
Understand when to use standard predefined types and when USERDEFINED is needed for IFC+SG subtype requirements.
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Reference Documents
When to use COP, Excel Mapping File & Glossary
Understand how the COP, IFC+SG Excel Mapping File, and Glossary support different parts of modelling and data preparation.
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03 · Project Coordinates & Alignment
Project coordinates and model federation
Set up coordinates and check model alignment before IFC export. This helps reduce federation issues when different discipline models are combined for review.
Coordinates
Project Coordinates & Geo-Referencing
Understand how project coordinates and geo-referencing affect model placement, IFC export, and downstream review.
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Federation
Ensure models align correctly in federation
Check that architectural, structural, and MEP models align correctly when federated in IFC viewers or coordination tools.
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04 · Model Quality & Coordination
Improve model quality before IFC export and submission
Review model quality, GUID consistency, coordination status, and file performance before federating and exporting IFC models for submission.
IFC Identity
Maintain unique GUIDs across models
Prevent duplicated IFC GUIDs when creating multiple blocks, copying templates, or managing linked discipline models.
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Performance
Manage file size for performance
Reduce unnecessary model complexity and optimise file size to improve IFC export, loading, federation, and review performance.
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Coordination
Clash detection & coordination
Review clashes and coordination issues early before IFC export and submission to reduce downstream review problems.
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Modelling
Export gridlines to all storeys
Ensure gridlines are exported across all storeys in the IFC model to maintain spatial reference and improve coordination across disciplines.
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