Global coordinate system

Global coordinate system is the main reference for positiong objects in Tekla Structures. It is represented by a green cube symbol at the global point of origin (x=0, y=0, z=0). The global coordinate system is static and it cannot be changed.

Do not place the model far away from the origin. If you create model objects far away from the origin, snapping to ponts in the model views may become inaccurate. The further away from the origin you model, the less precise all computations become.

If you need to use another coordinate system for inserting reference models or exporting IFC models, you can use base points. When you use base points, you can keep the coordinates small and locate the model wherever needed. For instuctions, see Base points.

Local coordinate system (Work plane)

Local coordinate system, also known as the work plane, can be adjusted according to modeling needs. It is indicated by a red work plane arrow symbol which shows the xy plane. The z direction follows the right-hand rule.

Most of the commands that are dependent on the coordinate system use the work plane coordinates. For example creating points, part positioning, and copying always comply with the work plane coordinate system. The work plane is model-specific, so it is the same in all views.

You can set the work plane to any position by picking points or by selecting a plane. This can make it easier to place parts accurately when, for example, modeling sloped parts. For instructions on setting the work plane, see Shift the work plane.

The work plane also has its own red grid, which can be used for positioning parts. You can show or hide this grid as needed. For instructions, see Show or hide the work plane grid.

Coordinate symbol

The local coordinate system symbol, which is located in the lower right corner of the model view, follows the work plane and indicates the direction of the model.

If you want to rotate the model view from 3D to a 2D plane, click the navigation control axes in the local coordinate system symbol. The model view rotates around the current rotation point to the selected 2D plane. To check the model using a different view, click another control axis in the symbol. To return to the 3D view, rotate the model using mouse.

Work plane handler toolbar

If you have defined base points or saved work planes, you can use the Work plane handler toolbar to select which work plane you currently have in use in the model. For instructions, see Select the work plane.