Using inroads to calculate volume

Question

I'm pretty sure I've done this before and I simply cannot remember the sequence of doing so. I have a base topo and am overlaying a final fill plan. Wanting to calculate the remaining fill, normally I'll calculate the area of each 5' contour in sq.ft using a planimeter. I take average between each contour and get a cu.ft. then cu.yd. if needed. 
 
 Can't this be done in InRoads by importing these shape surfaces for each contour? What are the steps? I am drawing a blank...or I'm mistaken and I've not done this in InRoads. 
 
 Thx for your help.

Jacquelyn Pettus · Answer

The general workflow should be: 
 
 Display the proposed contours in the DGN. 
 Use File > Import > Surface to import the contours as contour features into a blank design surface. 
 Triangulate the design surface. 
 Use the command Evaluation > Volumes > Triangle Volumes to compute the cut and fill volumes between the two surfaces. 
 
 The problem that I see is that you are not starting with the correct contours in step one. These contours are crossing each other. The straight lines have been drawn in and I'm not sure what they are supposed to mean, but I do not believe they are valid contours.