Jason Amador-Locher

Grading Analysis

This grading plan was drawn using transparent polygons which graphically show where the deepest cut and fill areas occur. Using the Attributes Window, I was able to fine-tune the transparency to a level that was very readable on screen and when printed.

The polygons were placed so that the smallest ones are on top of the larger ones — so that I can select and edit each one. I set the transparency of each polygon to 20% and all have the same color. So the darker areas are where there are multiple overlapping polygons.

PowerCADD 7 now has a cumulative option for the Area command in the Tool menu. I moved the green 'cut' polygons to a separate layer, selected them all and then used Area to get the total area of all of these polygons. I then moved the orange 'fill' polygons and repeated the process. With the total area, I was then able to calculate the cut and fill volumes to cubic feet and then cubic yards.