Released: October 2013
TPC Desktop 2013 R0 – Released July 2013

Legal Descriptions

Legal descriptions are scheduled for major enhancements in TPC Desktop 2014, but here are a few you have asked for now.

Add Spirals to Legal Descriptions

Legal Spiral

Legal Spiral

Legal descriptions previously reported only chord direction and distance for spirals. Release 1 adds tangent and non-tangent spirals and describes them much like tangent and non-tangent curves.

Tangent spirals: Courses 2 and 4 below describe the transition spirals in an out of a curve. These spirals rely on the tangents and curve that connect them.

Non-Tangent spirals: Course 6 below, describes a non-tangent spiral being intersected by the line from points 5 to 6 in the drawing. Additional information is presented with the spiral since it has been defined independent of its adjacent courses.

[[ Legal Description: Legal1 ]] Monday, September 30, 2013 15:19:36
Feet Factor=1.00000000
Grid Dist (inverse grid coordinates)
Grid Bearing (inverse grid coordinates)

1) thence North 90° East for 100.00 feet;

2) thence 500.00 feet along a highway spiral to the right, said spiral having a central angle of 47° 44′ 47″ and a chord bearing of South 74° 10′ 47″ East for 484.74 feet;

3) thence along a curve to the right having a radius of 300.00 feet and a central angle of 19° 05′ 55″ for an arc length of 100.00 feet, said curve having a chord bearing of South 32° 42′ 16″ East for 99.54 feet;October 15, 2013he right, said spiral having a central angle of 47° 44′ 47″ and a chord bearing of South 08° 46′ 19″ West for 484.74 feet;

5) thence South 24° 35′ 32″ West for 100.00 feet;

6) thence to the beginning point of a highway spiral to the left, having a beginning radius of 0.00 feet from which the radius point bears South 82° 10′ 31″ East and an ending radius of 300.00 feet, thence 520.00 feet along said spiral, said spiral having a central angle of 49° 39′ 23″ and a chord bearing of South 08° 37′ 13″ East for 502.85 feet.

Legal Descriptions Now Use Distance and Direction Type of Traverse

Legal descriptions now use the distance and direction types of the traverse they are derived from.

In the following example, the traverse uses ground distance and project elevation and true bearings. These are reflected in the title of the description as shown blow.

[[ Legal Description: Legal1 ]] Monday, September 30, 2013 15:31:49
Feet Factor=1.00000000
Ground Dist (at project elevation 3500.00)
True Bearing (mean course convergence PLSS)

User Defined Tangency

TPC describes adjacent courses differently based on their tangency. If the radial bearing of the PC of a curve is at right angles to an incoming course, that curve is considered to be ‘tangent’ to that course and is described differently than it would be if it were not tangent to that course.

You can now enter your own angular limit to determine if two adjacent courses are tangent or not. As long as the difference between two directions is within this angular limit, the directions are considered to be tangent.

The default value of 1 minute means that if two directions differ by more than one minute, they are not tangent.

Improved Capitalization

You can request the legal description to be capitalized or not. This release is more consistent in how it capitalizes all parts of the legal description.

Arc Aligned Text

Added arc aligned text to user drawn arcs

User Drawn Curved Text

User Drawn Curved Text

You can now choose between stacked text and arc aligned text for user drawn arcs.

With the release of TPC Desktop 2013, arc aligned text was available only with survey lines created from the traverse settings. Users requested the ability to apply arc aligned text to arcs they labeled.

Create a labeled arc

1. draw an arc in either paper space or survey space
2. label the arc (right click it and choose Modify Objects, Label)
3. format all arc labels via Tools, Drawing Settings, Object Labels from the drawing view and specify [x] Arc Aligned.

All user drawn arcs in the drawing will be labeled based on this setting.

The Format Label button does the same think here that it does in the Traverse Settings dialog. It displays the drawing’s label formats for both Stacked and Arc aligned text.

Arc aligned text > 32 chars

TPC Desktop 2013 was limited to 32 characters when arc aligning text. If the text exceeded that limit, the text was drawn in a straight line instead.

Release 1 removes this limit so that text of any length can be arc aligned.


 Hot Fixes

All the hot fixes for TPC Desktop 2013 are included in this release.

Legal Descriptions

Legal descriptions now include spirals, the distance and direction type of the traverse they originate from, include a user defined tangency and improve capitalization.

Windows Trusted Publisher Certificate

Starting in Release 1, we’ve included our Windows Trusted Publisher Certificate with program installs. As more and more of you download TPC from the web, we felt it was important to provide another level of security. You also enjoy greater TPC compatibility with your email and antivirus software.

Multi-line Descriptions

It’s just a little thing, but many of you have ask that TPC allow multiple lines when inserting descriptions for traverses, surfaces and drawings.

License Management

With Release 1, you will be able to revoke the TPC Desktop license from your old computer and re-use it on any other computer, like the new one you just bought.

More Automatic Closure Scenarios

We added traverse configurations which TPC automatically identifies as Closed Loop. One is (1 =11, …, 1 =11) where a traverse begins and ends with the same point, which references another survey point via the “=” in the description. Automatic closures are a great new feature of TPC Desktop 2013 and we are excited about tacking down all the configurations you use and making them available in upcoming agile releases.

Geodetic Mid-Points

When inserting a geodetic mid-point into a traverse via the Traverse View ‘Insert’ command, TPC now automatically applies the distance factor. Previously, the distance factor had to match the survey units.

Updating Raw Data

When updating raw data, the traverse units are used to create the raw distance instead of the survey units. For those of you creating PLSS field data from GPS coordinates, this is a real time saver.

Updates / Upgrades


Ready to update your copy of TPC?

Traverse PC allows all previous versions to be updated to the Current Version of Traverse PC at substantial discounts.

Updates require the Serial Number of your current program. It can be found by choosing Help | About TPC Desktop.


Traverse PC allows you to Upgrade from one Edition of the Current Version to another Edition.

You pay just the difference in list price between the two Editions.

Note: If you do not have the Current Version, you need to first Update to the Current Version and then Upgrade to the Edition you want.

Upgrades require the Serial Number of your current program. It can be found by choosing Help | About TPC Desktop.


  • Version: A Version is defined as the specific name of a release such as TPC Desktop V9.5 or TPC Desktop 2018.
  • Edition: An Edition is defined as the specific set of features that has an Edition name such as TPC Desktop 2018 Professional (2018 is the Version and Professional is the Edition).
  • Current Version: The Current Version is the Version that is currently being sold by Traverse PC.
  • Recent Version: Recent Versions are the Versions immediately preceding the Current Version and which are still supported by Traverse PC Technical Support.
  • Older Version: An Older Version is a Version for which Traverse PC no longer provides Technical Support or program maintenance.
  • Update: An Update is defined as moving from a prior Version to the same Edition of the Current Version such as TPC Desktop Professional 2017 to TPC Desktop Professional 2018.
  • Upgrade: An Upgrade is defined as moving from one Edition of the Current Version to another Edition of the Current Version such as from TPC Desktop 2018 Personal to TPC Desktop 2018 Premium.