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  • Answer

    It may happen that surfaces are not connected though they should be. In that sense, double lines may affect the calculation. It is better to clean the model and remove the double lines.

    Duplicate lines can be quickly accessed using the Tools> Model control> overlapping lines are found. In this tool, the line pairs can also be output as an Excel list or sections can be created.

    Often, however, the lines can not be easily deleted because they are assigned to different objects. If you delete one of the lines is z. For example, an area is deleted. Therefore, you should first check all components if the lines can be deleted and must change the boundary lines if necessary.

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