Exporting a Tekla Model to Global Coordinates Using Base Points

Tekl1 modelers typically create and develop Tekla models close to the model origin (0,0,0) to maintain optimal modelling performance and accuracy. However, when sharing IFC files for coordination, clash detection, or BIM integration, the model may need to be positioned at its actual project location using global Easting and Northing coordinates.

By exporting the model using a Base Point, multiple IFC models from different consultants and contractors can be accurately overlaid within BIM coordination software.

Setting Up a Base Point

To export a Tekla model to global coordinates:

1. Open File > Project Properties > Base Points.
2. Create or modify a Base Point.
3. Enter the required Easting and Northing coordinate values.
4. Use the Base Point when exporting the IFC model.

When the IFC is exported using this Base Point, the model origin is shifted to the specified Easting and Northing coordinates, allowing the model to be correctly positioned within the global coordinate system.

Using a Specific Model Point as the Base Point

In addition to using the model origin, Tekla allows any point within the model to be selected as the Base Point.

This provides greater flexibility when project coordinates are referenced from a specific grid intersection, column location, survey point, or benchmark. The selected point can then be assigned the required Easting and Northing coordinates during export.

Applying Rotation

The Base Point functionality also allows the model to be rotated relative to the selected reference point. This is particularly useful when the project grid is not aligned with true north or when a specific orientation is required by the client or project team.

By defining both the coordinate location and rotation, the exported IFC can accurately represent the model’s real-world position and orientation.

Demonstration

The video below demonstrates the complete procedure with a practical example, showing how to:

• Create and configure a Base Point.
• Assign global coordinates.
• Select a specific model point as the Base Point.
• Apply model rotation.
• Export the IFC in the correct global position.