3D Negatives & Public spaces
Tall buildings has a major impact not only on the landscape but also on the quality and functioning of public space in a city. The above was a subject of a separate research under the project. To a large extent, the urban structure is the effect of a game involving ‘the positive and the negative’, in other words buildings and space. The game also involves inhabitants of a city. The Positive takes the form of buildings, structures, facilities or elements of the natural landscape. The Negative is the world of invisible geometry determined by the structure of the Positive. The form and geometry of buildings can be seen directly, whereas the geometry of space between buildings is not measurable directly.
This led to the development of the 3D-Negavite method which enables (based on CityGML model) generating a 3d public space model, or the negative of a city, and then analysing its geometrical parameters: the spectrum analysis (CSP), angle typology analysis (TBS), dimension typology analysis and study of public space planes and surfaces (TBL, TBA).
Research on public space also focused on the intensity of the shadow effect produced and obstructing the view by tall buildings. The study applied specialist software providing for calculation of sun exposure time and Sky View Factor (SVF), a tool that enables calculation of surface area obstructed.