Originally posted by Robtard
Not questioning the supply of dirt, but the scope of work required to build and then take down these massive dirt mounds/ramps.Be like building another Pyramid or two in terms of labor.
Heterodotus says they used 100,000 people.
Let's say they had a third that number available all carrying 20lb bags.
The NIST gives an average of 120lb per cubic foot for dirt. That's 5500 cubic feet of building material every few hours.
10 meters wide. 5 degree angle. Let's call it 85, 90, 5. 146 meters tall. That's 1675 meters long and 1668 meters at the bottom.
So 121763 * 10 = 1217630m^3
So those guys would all have to make 7818 trips in the course of 30 years. Not even one trip per person per day.