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Space Syntax in formation of a Historic City, Dhaka
<ul><li>Cities (Bigger/evolved spaces) are a foreground network of linked centres (smaller/seed spaces) at all scales set into a background network of primarily residential space. </li></ul><ul><li>The network of the centres are the basic of a city formation . City forms by city centres. </li></ul>Formation of a City
Space Syntax theory of centres <ul><li>Every centre has a centre . It starts with a spatial seed . </li></ul><ul><li>The seed of a centre must have spatial value. </li></ul><ul><li>The seed of a centre will have destination and route values. </li></ul><ul><li>The spatial values of the seed for the centre will establish wider space (fading distance) with relative spatial value. Up to what distance from the seed that will depend on the seed’s value. </li></ul>
A .-This local centre started at the bank of Buriganga river in the medieval period because of the trade centre. The spatial value of the centre made the contemporary intense grid of accessibility. A Centres of Dhaka City
A B B -Imperial rulers enforced this centre at Ramna .
C & D -These two centres started very recently and made most intense grid. A B C D
New centres can be formed self regulated by the spatial vlue and selectively (business/imperial exercise?) Self regulated centres have intense grid and short segment length. There is high population and employment density Selective centres have less intense grid and long segment length. The population and employment density is less and as a result lower rates of pedestrian activity.
Expansion of the Centre <ul><li>The centre will expand outside the fading distance established by the initial seed to the degree that further seeds appear within the fading distance. And it can be stopped growing because of a stronger spatial seed and that's fading distance. </li></ul>
B The spatial seed value of centre A was weaker than the seed value of centre B. The fading distance of centre B stopped in North and 2 new centre started.
The network of the centres of different time and with different spatial values formed the city of Dhaka