PolimiparaRocinha: Environmental Performances and Social …
117
Below is the effectiveness analysis of Rocinha with regard to the various mobility
configurations existing in the favela.
Interface
IMM interface is evaluated through mean depth calculation and the axial analysis
provided by Space Syntax. The axial analysis is a simple iterative computation based
on graph theory in which the number of the intersections to reach a certain link is
calculated on the basis of all the parts of the street networks. At the end, the links that
gain lower depth are the ones which are connected to the system with much higher
integrity (Hillier and Iida 2005).
D =
d . n
k − 1
D: mean depth, d: depth, n: number of unit spaces at a specific depth, k: total unit
spaces that comprise the system.
The interface analysis vividly illustrates that the street network of Rocinha provides a very low level of connectivity, dictating a low quality of internal movement.
It is not surprising that the urban flow is easily interrupted throughout. Interestingly,
the parts with low integrity are exactly where criminal groups prefer to arrange their
activities. This situation is mainly due to the limitations caused by topography and the
irregular pattern of buildings (which itself is an indirect consequence of topography
(Fig. 3).
Fig. 3 Interface in Rocinha
117
Below is the effectiveness analysis of Rocinha with regard to the various mobility
configurations existing in the favela.
Interface
IMM interface is evaluated through mean depth calculation and the axial analysis
provided by Space Syntax. The axial analysis is a simple iterative computation based
on graph theory in which the number of the intersections to reach a certain link is
calculated on the basis of all the parts of the street networks. At the end, the links that
gain lower depth are the ones which are connected to the system with much higher
integrity (Hillier and Iida 2005).
D =
d . n
k − 1
D: mean depth, d: depth, n: number of unit spaces at a specific depth, k: total unit
spaces that comprise the system.
The interface analysis vividly illustrates that the street network of Rocinha provides a very low level of connectivity, dictating a low quality of internal movement.
It is not surprising that the urban flow is easily interrupted throughout. Interestingly,
the parts with low integrity are exactly where criminal groups prefer to arrange their
activities. This situation is mainly due to the limitations caused by topography and the
irregular pattern of buildings (which itself is an indirect consequence of topography
(Fig. 3).
Fig. 3 Interface in Rocinha