I'm having serious reservations about purchasing TBC for field to finish line code processing. I cannot seem to make heads nor tails out of how the line processing works.

I have asked this question previously on other forums. How do you create acutal curves in TBC with line codes? From what I can see, you can create curves during line processing as long as the elevations of the points are all the same. If the elevations of the points used in the curve are different (as they would be in the real world) TBC generates short line segments to approximate the curve.

I also need a way to process all the linework in TBC and have this linework all be at 0 elevation.

Any suggestions would be great.

Thanks,

Todd

Todd,

You can create 3D curves using codes in TBC. You first need to set up a Feature Code Library or use one that Trimble has already made. This is where you would tell the software what codes you want to use and what codes you want to use as control codes that have special functions like creating curves or closing a rectangle.

Once you have your linework you can export it to a 2D line drawing or you can make all your points at elevation 0 and process them that way.

Here are some screen shots of how curve codes would look and how to export the lines in 2D.

Codes:

EP (Edge of Pavement)

PC (Stat Tangent Curve)

PCNT (Start Non-tangent Curve)

PT (End Curve)

Hope this helps!