Introduction
This article explains how to troubleshoot orthogonal snapping issues in Tekla Structures when working with distant structures or IFC models. It also covers how to keep elements positioned accurately by using the correct KEYIN settings and a consistent base point workflow.
Issue description
Orthogonal snapping may behave unexpectedly when the model is far from the origin, or when imported IFC files are not coordinated with the same reference point. This can lead to inaccurate placement, difficulty snapping to intended directions, or offsets between models.
Signs
Snapping does not follow the expected orthogonal direction.
Elements appear slightly offset when placed in distant parts of the model.
Imported IFC models do not align correctly with the Tekla Structures model.
Coordinate values become difficult to manage when the model is located far from the origin.
Basic troubleshooting steps
Use the checklist below to identify the most common causes of orthogonal snapping and positioning issues.
Check whether the model is located far from the origin.
Verify that KEYIN settings are configured correctly.
Confirm that the same base point is used across Tekla Structures and IFC exports.
Check whether imported IFC files were created with a different coordinate reference.
Advanced troubleshooting steps
Step 1: Check and configure KEYIN settings
Review the following KEYIN settings in Tekla Structures and make sure they match your intended workflow:
XS_KEYIN_DEFAULT_MODE
XS_KEYIN_ABSOLUTE_PREFIX
XS_KEYIN_GLOBAL_PREFIX
XS_KEYIN_RELATIVE_PREFIX
Make sure the settings support the coordinate input method you need for the current task. If the model is far from the origin, incorrect key-in behavior can make snapping and placement less reliable.
Step 2: Use a base point to keep the model near the origin
To improve accuracy, place or manage the Tekla Structures model so it stays close to the origin by using a base point. This helps reduce precision issues that can occur in distant structures.
Identify the project reference point that should be used as the base point.
Set the base point in Tekla Structures according to the project coordinates.
Work with the model in a position that remains near the origin whenever possible.
Recheck snapping and placement after adjusting the base point.
Step 3: Use the same base point when exporting IFC files
When exporting IFC files, use the same base point so that all models share a consistent coordinate system. This is essential for coordination between Tekla Structures models and IFCs.
Confirm the base point used in the Tekla Structures model.
Select the same reference point in the IFC export settings.
Export the IFC file and verify that the coordinates match the intended project location.
If multiple IFCs are used, ensure they all use the same shared base point.
Step 4: Recheck positioning in distant structures or IFCs
After updating the KEYIN settings and base point workflow, test the model again in the area where the issue occurs. Place or snap a few reference elements and confirm that orthogonal directions and coordinates behave as expected.
Tips and best practices
Keep the Tekla Structures model as close to the origin as possible.
Use consistent coordinate references across all models and exports.
Document which base point and KEYIN settings are used for each project.
Verify IFC coordination early in the workflow to avoid downstream alignment issues.
Summary
To fix orthogonal snapping issues in Tekla Structures, verify the KEYIN settings, use a base point to keep the model near the origin, and export IFC files with the same base point. Following a consistent coordinate workflow helps ensure accurate positioning in distant structures and coordinated IFC models.
Additional information
If the issue continues after applying these steps, review your project coordinate setup and consult your Tekla Structures administrator or support contact for further assistance.
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