Right-of-Way Offset Dialog

To create a right-of-way, choose COGO | Right of Way Offsets from the Traverse View. If the traverse were the centerline of a road, this would create the R-O-W margins for the roadway. You might also use this option to compute an easement around a lot, etc.

R-O-W points are not computed for side shots, benchmarks etc. If you want R-O-W offsets from these points, you must first change them to occupied points.

An R-O-W offset traverse can be created at a specified offset distance both to the right and/or left of the current traverse.

Left

Select the Left option and enter an offset distance to create offsets to the left.

Multiple

You can create any number of offsets from each original point. Additional offsets are multiples of the offset distance. A 20’ offset for instance, would have multiples of 20’, 40’, 60’, 80’, etc.

Label

Select how you want the offset points to be labeled. Traverse PC's default settings of add "R" to right offsets and "L" to left offsets (1R and 1L for example). You can change this to whatever you choose. If you change the Left Label field to "L*" you will end up with point labels L1, L2, etc.  Default = *L for left and *R for right.

Next Label

TPC evaluates the current label, selecting the next available point label if the current label is not unique.

Description

Enter a description to be used for each offset point.

Copy Center Line Description

Copy the description of the original point to each offset point.

Right

Like the left offset, but to the right. You can either Left, Right or both offsets.

Offset What

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.

Tolerance

The offset tolerance determines how close any two points being offset need to be in order to be treated as one point. If they do not reference the same survey point but are within the specified tolerance of each other, they will be considered the same point and you will get a single offset instead of two. This is particularly important for the initial point and closing point of the traverse if you save the offset as a traverse. If both points are within Tolerance of each other, TPC treats them as if they were the same point and closes the offset traverse so that it starts and ends with the same offset point. If the initial and closing points are not close to each other, you can still force closure of the offset traverse by turning on the Force Closure option.

Force Closure

Forces the traverse to start and end on the same point for the sake of computing the offset at the initial point. In order to compute a closure error for a traverse, it must start and end on two different points, even though they may be the same physical point on the ground. When you force the closure, TPC ignores any closing error and computes the initial offset as if the initial point and closing point were the same point.

Save as Offsets

Creates the R-O-W points and inserts them as side shots from the current traverse points.

Save as Traverse

Creates the R-O-W points and puts them in their own traverse (one traverse for points to the right and another traverse for points to the left). The new traverses have the same name as the current traverse but with the prefix "R/W-RIGHT-" and "R/W-LEFT-" and are inserted into the Traverses Manager immediately following the current traverse. The R-O-W points themselves are labeled just like points created with the Save as Offsets option.

Close

Return to the Traverse View. Points created with the Save as Offsets or Save as Traverse options are now a part of the survey and are not deleted.

Related Topics

Creating Offsets or R-O-W Offsets
Entering Equations
Setting the Default Direction