# Daily Challenge Day 52

So yesterdays post got to 5 km cells having a population of 1000 people, and then collapsed that down to a cell 1 km in diameter. A 5 km diameter cell contains 25 cells 1 km in diameter with respect to areas and ignoring geometry: that is fewer cells would be contained if stuck with complete close packed circles. In other posts I identified towns being 10 km in diameter with villages being 1 km in diameter, and the villages having estates 100 m in diameter. There are 100 cells 100 m in diameter contained in the cells 1 km in diameter, therefore each estate can have a population of 10 people.

For the estates the population could be concentrated near the centre of a circle 57m diameter, creating a ring 21m wide for industry and public infrastructure. Alternatively the public infrastructure and industry can be concentrated at the core, in a circle 81m diameter, with a ring 9.6m wide for housing. The outer length around the segment would be 31.4m, with the inner arc being 25.4m for each house property. As to where the infrastructure is located depends on how the cells are formed into clusters. For example with 7 cells, the internal cell and parts of the adjacent cells can be used for an industrial and public infrastructure core.

The other issue was declaring that some 40% to 60% of the population should be mobile. So for the village of 1000 people, some 400 to 600 people would be mobile. With 40% mobile, then have 400 people mobile and 600 locked in location. Sticking with the 1/3rd area residential and 2/3rd infrastructure, then the core would be 766m in diameter, with a ring 117m wide for mobile population. The ring provides space for residential and infrastructure requirements.

With a 60% mobile population, then diameter of permanent core would be 625m, with a ring 187m wide for the mobile population.

Also noted is that there are 2500 cells 100m in diameter contained in the 5 km cells,so that the 5km cells can have a population of 25,000 people. So a 25 cell cluster of 5km cells, could concentrate population into a single cell. Also ignoring the infrastructure, and just going with 16m x 16m block per person, then the 100m cells can provide space for up to 30 people. All in all multistorey buildings seem unnecessary.

Human drones in concrete beehives, wired to the matrix and assimilated to the borg.

The problem is how to connect all the cells, and get resources flowing between the cells: where it is necessary for resources to move. It is not necessary for all cells to be connected, and cells do not need to be dependent. Now cells  5km in diameter can hold populations larger than 1000 people, already expanded to possible 25,000: but the existing cities show the population can be still larger if multistorey buildings are used.

So assuming 25,000 people at each level, then a population of 1 million can be squeezed into a 5km diameter circle, if placed on 40 levels. Then assuming 3m height for each level the city would be 120m high. Such height however is not conveniently walkable, it depends on the use of mechanised transport. Machinery needs to be maintained and otherwise fueled. It doesn’t matter if we spread out horizontally or vertically, if we are dependent on machines to move.

There is a difference between machines as a convenience and machines as a necessity. To be sustainable in the long term we should aim for human scale: that which is of a size and within the capabilities of human power. That is machines for infrequent discretionary requirements and human power for regular and routine requirements. Use machines whilst we have them and can power them to achieve the most we can, but don’t use them to create a future where we will have a problem.

We can walk around a 5km diameter cell, and we can walk between cells 5km apart. The problem is the speed to get around, and the weight of cargo to shift. A bicycle is a machine, which can increase average travel speed from 5km/h to 20km/h. Many places use bicycles to shift people and cargo around. Bicycles are human scale machines.

So starting point is to identify, cells 1 km diameter and 5 km in diameter and determine what is currently present in such cells. For example the core of the city of Adelaide fits in a cell 5km in diameter. Whilst Maitland SA, would fit in a cell approximately 2.5km in diameter. What functions are available in Adelaide city? What functions are lacking from Maitland?