L4 Settlement part 12

I started to recreate a sub-quad of the settlement in MS Excel where one square was 3m. After doing this and putting in the 208 apartment complexes I came to realize I have made a big mistake in my calculating.

Using this site I did a rough calculation of apartment sizes, given each would have a living room, one, two or three bedrooms, a bathroom, but no kitchen since all meals will be eaten in the communal dining hall. I found that one bedroom, two bedroom and three bedroom apartments would be size 46, 55 and 65 square meters respectively.

With 20 studio, 30 2 bedroom and 4 3bedroom this adds to 2830 m2. Add 15 m2 for the dining hall, 9 m2 for 3 laundry rooms and 16m2 for a 4x4 central courtyard and this adds to the total to get 2870 m2. I rounded it up to 3000 m2, but since it is a three level building, those 3000 m2 are split over three levels, so the foot print is only 1000 m2.

The population I had planned for was half a million, divide that in four parts to get the population per Quarter which gives 125,000 people per quarter. Each Quarter is divided into four parts to create sub-quads and so each sub-quad would have 31,250 people. Each apartment complex is to hold a max of 150 people, so to fit 31,250 people into the apartment complexes we'll need 208 of them.

208 apartment complexes at 1000m2 per apartment complex means that all apartment complexes in a sub-quad requires 208,000m2.

The area of a sub-quad is one quarter of the circumradius distance (15530m) by one quarter of the length (10000m), so it is 3883m by 2500m. This gives a total area of a sub-quad to be 9,706,250m2.

So all 208 apartment complexes requiring a total of 208,000m2 is to be placed in a sub-quad of 9,706,250 m2. The apartment complexes represent 2.14% of the total available space.

If I reduce the radius of the cylinder, it would need to spin faster to get the 1g at surface; and, it would mean the food cylinder would need to get longer. If I reduce the settlement cylinder to be the same radius but 5km long instead of 10km long, it doesn't make a big difference; the 208 apartment complexes now take up 4.29% of the new sub-quad area.

I could easily double the population, within the 5km settlement cylinder, but then I would need to double the food cylinder size. 

Anyhow, I have had enormous fun writing all of these posts about asteroid mining, space farming, space fish farm, getting Nitrogen from the Kuiper belt, learning about YBCO semi conductor and about methalox and Hydralox fuels. Due to the miscalculation I've noted in this post I would have to go right back to the drawing board, though many of the ideas that were applicable previously would still be useful, like my learning about democratic socialism, about farming goats, chickens, nut trees and aquaponics.

Maybe I will come back to this at a later time and do the figuring more accurately, but for now I will push this aside.