The wall of Fort Raleigh was divided into 30 different sectors in order to estimate the volume of the dirt removed and given a unique sector number. These sectors were classified based on their shape as either a trapezoidal prism sector, a corner sector, or a wedge sector. Total volume was calculated by the following equation:
Total Volume = Volume Trapezoid Sectors + Volume Corner Sectors + Volume Wedge
Sectors.
It was assumed that the width of the wall was the same throughout. It was also assumed that the west wall had a gap in it, just as the trench was not completed on the west side of the fort.

Trapezoid 
Wedge 
Corner 
Total Volume 
Minimum Estimate: 
6904.3 
685.984 
1674.088 
9264.372 ft^3 
Maximum Estimate: 
8584.95 
1171.647 
2029.28 
11785.88 ft^3 
Maximum  Minimum: 



2521.505 