Will:
The 1/3 2/3 is not a raduis ratio, it is how/where to locate the superelevation transition with respect to the PC or PT of a curve.
Eea is saying normally the superelevation transition is 1/3 in the curve and 2/3 outside the curve (usually on a tangent).
(eea also meant PRC - Point of...
Hopefully you have already resolved your immediate questions about survey point descriptions. Surveyors usually have a list of all common topographic featues, with related codes or abbreviations that are eventually displayed in a drawing. Rather than learning the 10± abbreviations that you just...
