Compute the Station/Offset of points in this traverse to an alignment defined by any other traverse in the survey. A new traverse will be created to hold the resulting station/offset points which will be inserted into the survey immediately following the selected alignment traverse.
This is a list of all the traverses in the survey. Click the down arrow and use the cursor keys or mouse to highlight the traverse you want to use for the alignment.
You can create offsets for the entire traverse or for just the currently selected points. You must select the points to offset before accessing the Right-of-Way Offset dialog.
Alignments can have adjacent segments that are not exactly tangent to each other. These occur when two tangents meet at an angle point or when the segment adjacent to either end of a spiral or curve does is not exactly tangent to the spiral or curve. These cases of non-tangency create areas in which an offset point is not perpendicular to the alignment – kind of ‘gray zones’.
The tolerance value you specify here allows TPC to account for these cases of non-tangency by looking for offsets that are nearly perpendicular but not quite. A tolerance of 1 unit would probably catch all of these non-tangency cases while a tolerance of 0.1 unit would catch many but not all.
Use this group of fields to compute the offset of a single point to the selected alignment. You can enter as many single points as you want, printing a summary of each to the Report View. Use the [>] pick button to select the point from the current drawing.
Enter the point for which you wish to compute the offset. By default, the point that was selected in the Traverse View is displayed as the first offset point.
The computed offset distance to the alignment.
The computed station on the alignment at which the single offset point is perpendicular.
Add the single point offset information to the Report View.
Computes the offsets and creates the new traverse.
Closes the Offset to Alignment dialog and returns you to the Traverse View.
Creating Offsets to an Alignment
Entering Equations
Setting the Default Direction