Civil 3D App - Grade Slope Along Surface
This app uses a unique algorithm that extracts data from the selected tin surface and computes the trigonometry calculations at a desired grade/slope to draw a 3D polyline across the surface at the desired grade/slope. 3D Polyline vertices are computed at the triangle edges resulting in vertices that match the data. Converting the 3D polyline to a feature line results in grades that accurately represent the input grade/slope.
https://apps.exchange.autodesk.com/CI...