Dimension marks can be freely dragged to avoid overlapping dimensions and marks.
Note that you can only drag relative dimensions, not absolute dimensions.
Go to and ensure that Drawing drag & drop is selected .
Point the handle, press down the left mouse button, and drag the dimension mark to the desired location. Tekla Structures automatically adds a leader line to the dimension mark that is dragged from its original position.
Note that if you do not want to draw a leader line when a dimension text is dragged away from the dimension line, set the advanced option XS_LEADER_LINE_TO_DRAGGED_DIMENSION_TEXT to FALSE in the category Dimensioning: General in the Advanced Options dialog box. The default value is TRUE.