| Date post: | 19-Jul-2015 |
| Category: |
Science |
| Upload: | progetto-mappa |
| View: | 221 times |
| Download: | 1 times |
The representation of archaeological-architectonical record of Pisa Gabriele Gattiglia, MAPPA Lab – University of Pisa Anichini Francesca, MAPPA Lab – University of Pisa Mara Febbraro, Indipendent Researcher, Fabiana Susini, University of Florence Valerio Noti, TerreLogiche srl
MAPPA Lab is a research Lab of the University of Pisa, which deals with: • Predictive modeling • Opendata • Geo-archaeology • Communication and storytelling
The representation of archaeological-architectonical record of Pisa
The representation of archaeological-architectonical record of Pisa
MAPPA Lab developed a predictive model based on PageRank algorithm for the estimation of the archaeological potential of an urban area. Dubbini N., Gattiglia G, 2013 A PageRank based predictive model for the estimation of the archaeological potential of an urban area During this research project we used all the archaeological data including building archaeology data, that we published on an open access web map: the MAPPAgis
•Urban data
•Historical cartography data
•Geographical/ geomorphological data
•Archaeological data
PRIMARY DATA
•obtained data
SECONDARY DATA
The representation of archaeological-architectonical record of Pisa
Anichini F., Gattiglia G. 2012 Some like it ‘webGIS’. Practical indications for conscious archaeological use Noti V. 2012 The MAPPA Project webGIS: system architecture and future scenario
The representation of archaeological-architectonical record of Pisa
ground, from Roman to Contemporary ages, allowing us to check the legibility and the transformations of the building structures.
The study was developed on the urban fabric of Pisa’s historical centre for the MAPPA project. The research started from a complete survey of the buildings, carried out using records that detailed the characteristics of the building through all the historical periods attested above
Method
The representation of archaeological-architectonical record of Pisa
The building analysis was jointly carried out by archaeologists and art historians allowing different methods and skills to be shared The building analysis was carried out on the basis of what can be seen today, if a structure was attested at a certain time in historical-literary sources, but traces of it could not be seen in present day masonry, this “ghost” phase was not taken into consideration in the GIS. Information, however, was included in RDBMS. A methodological choice such as this, which provides a picture based solely on visible and objective evidence, implies that, in the event of a search based on chronological phases, empty spaces can be seen where we would expect constructions on the basis of historical-archival-documentary information.
The representation of archaeological-architectonical record of Pisa
Built to last in time, buildings have a lifecycle that may span over many centuries. Restorations, modifications, expansions or demolitions leave traces, which are identifiable in a “vertical” stratigraphy, while their GIS representation is “horizontal”.
The representation of archaeological-architectonical record of Pisa
In order to collect the data, the data model was defined on the basis of an Urban Architectural Unit (UAU) of belonging, i.e. an element that has its own identity and function in the present-day city. The buildings were identified using their name (if they had one, for instance, historical buildings), their functional use (for example, “hospital”, “court”, “school” etc.) or simply their address.
The representation of archaeological-architectonical record of Pisa
Every Urban Architectural Unit (UAU) is linked to • Architectural Building (CA) (red) • Construction (CF) (blue) that eventually compose it.
The representation of archaeological-architectonical record of Pisa
In GIS: • Urban Architectural Unit (UAU), Architectural Building
(CA) and Construction(CF) were described with a polygonal graph,
• phases with a linear graph. Identification of the primitives was based on the actual consistency of the buildings: consequently, only the polygonal graph was suitable for this description, given also the project’s general coherence. Instead, phases are represented by a linear graph for two reasons: the masonry phase represents the result of an interpretative process, whilst from a physical viewpoint it represents the readable interface of the masonry stratification to which a thickness cannot be assigned because in the majority of cases the reading only refers to an external interface and also because there may not necessarily be exact correspondence between the interfaces placed on the two sides of a masonry structure.
The representation of archaeological-architectonical record of Pisa
The representation of archaeological-architectonical record of Pisa
The photographic data are suitable for recording the status of conservation of buildings and their decline (if any). It is a further tool that helps gain knowledge of and safeguard architectural heritage.
The representation of archaeological-architectonical record of Pisa
The data collected, which may be viewed on the MappaGIS, are a starting point for defining the transformation of Pisa’s urban fabric from the Late Middle Ages to present day, in terms of construction systems, types of buildings and urban planning.
The representation of archaeological-architectonical record of Pisa
The data produced by building analysis permitted a better algorithmic representation of archaeological potential of the various areas.
The representation of archaeological-architectonical record of Pisa
The next step will be to make the “ghost” phases graphically visible. The aim is to make information about Pisa’s buildings easily accessible, distinguishing between what has been preserved, even only minimally, and what has been attested by written or iconographic sources.
The representation of archaeological-architectonical record of Pisa
We tried to elaborate a language that could be understood by whoever does not have experience of historical reconstruction carried out from the viewpoint of building stratigraphy. There are no privileged recipients for this work; it is directed to everyone: from novices to experts (archaeologists, restorers, architects, engineers…), including “technicians” who must take decisions regarding urban planning and heritage protection. Users can decide whether to stop at the initial information, examine a single building in greater detail or view the diachronic development of the city. The webGIS platform produces new information (starting from new data) about the characteristics of a specific urban context with regard to construction systems, building aggregations and stylistic features; in the future, it could be useful for a 3D reconstruction of the historical centre during its various building phases.
Conclusion
Thank you Mappa Lab [email protected]
Gabriele Gattiglia [email protected]
@g_gattiglia http://pisa.academia.edu/GabrieleGattiglia
More info
@MappaProject http://www.mappaproject.org
The representation of archaeological-architectonical record of Pisa
