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To start a traverse
•Press [Enter] at the first blank line in the Traverses Manager. TPC displays the New Traverse dialog.
•Enter the name for the traverse.
•Select the Format you want for this traverse. Your selection here will automatically format the Traverse View for you.
•Select the Traverse Drawing Settings you want for this traverse.
•Choose OK to open the Traverse View for the new traverse.
Now you are ready to enter data for the new traverse, but how do you get started?
Starting with an Occupied Point
A new traverse always starts with an occupied point (OP). The next available point number greater than 0 is used to label the OP.
The information you enter at the start of a traverse depends on the type of survey you are doing and the information you have, but you will typically either recall an existing point or enter the starting coordinates.
See Starting with an Occupied Point.
Starting With a Known Occupied Point and Backsight
This is probably the most common way to start a traverse.
You’ll use this method if you have two known points with a line of sight between them. You can occupy either one of them and backsight the other.
See Starting With Two Known Points.
Starting With a Known Occupied Point and a Reference Azimuth
Sometimes, you know the coordinates of the point you are occupying, but not the backsight point. In this case, you can enter a reference azimuth or bearing (the azimuth or bearing from the occupied point to the backsight). TPC will use the reference azimuth to orient the traverse.
If you don’t know the correct reference azimuth, you can enter an assumed azimuth. Later, when you find out the correct azimuth, enter it and choose Tools | Recompute. TPC will update the position of all the dependent traverse points based on the new reference azimuth.
See Starting With One Known Point and an Azimuth.
Starting with a Resection
TPC can also start a traverse with a two-point resection. You must measure the angle and distance to both resection points. If you have either the Premium or Professional editions, TPC can also create a resection from any number or points using a Least Squares Resection.
You can include the backsight as one of the resection points. The resection points must be inserted following the backsight point and must be clockwise from it.
See Starting With a Resection.
Related Topics
Least Squares Resection
Traverse View
Starting with an Occupied Point
Starting With Two Known Points
Starting With One Known Point and an Azimuth
Starting With a Resection
Editions
Personal, Premium, Professional
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