vtsnowedin said,
Well the 110 sq. yard figure is correct but even if you have garden on the roof your only going to grow one third of your food on 110SY so your going to need roads to import food and no food is going to grow on the roads. You might have to annex Oklahoma Kansas and Nebraska which would make it a lot more roomy and get you closer to the corn from Iowa. From what I have read, it is possible to get better than 500 calories per sq meter/per month of garden - not claiming it is probable, but possible. That comes out to about 1600 calories per day per individual. That seems like plenty, for the near starvation, death camp of the future.
If you placed narrow gauge rail tracks on a 10 mile grid, both north/south, and east/west, anyone could walk to a distribution center in less than one and a half hours. No roads needed, just foot paths between plots. The distribution centers would just be to pick up toilet paper, cover material for the composting toilets, and maybe a little salt and pepper. As people died, they could be placed under the compost pile for each plot, so no soil nutrients would ever leave the plot.
So if you took an area about 150% the size of Texas ( maybe along both sides of the Mississippi river?), this should be easy to achieve. Pull the irrigation pipes and other stuff you need from the deserted towns in the remainder of the continent, and you have the perfect place to store the global deadwood.
And like I said before, that would give the elite all of the pretty places to enjoy whenever they wanted.
This kinda reminds me of "A Modest Proposal", by Swift.
I'm too old, I guess.