Ranking of Illegal Buildings Close to Rivers: A Proposal, Its Implementation and Preliminary Validation

Illegal buildings (IBs) are a dramatic problem in developing countries due to the population explosion, but, at the same time, they represent an unsolved issue in several states usually called advanced (as, for instance, Italy). To protect the environment, and hence, people, land authorities must re...

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Bibliographic Details
Published inISPRS international journal of geo-information Vol. 8; no. 11; p. 510
Main Author Felice, Paolino Di
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.11.2019
Subjects
Approximation
Buildings
Case studies
Demolition
Developing countries
Environmental protection
flood
Flood hazards
Floods
illegal building
Land information systems
Law
LDCs
metric
Query languages
Ranking
Remote sensing
Rivers
Software
spatial database
sql
Urban planning
Italy
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Summary:Illegal buildings (IBs) are a dramatic problem in developing countries due to the population explosion, but, at the same time, they represent an unsolved issue in several states usually called advanced (as, for instance, Italy). To protect the environment, and hence, people, land authorities must respond to the challenge of IBs by demolishing them. However, in countries where the phenomenon is extended, it is indispensable to provide those figures with an IT tool that returns to them an order of demolition. Through remote sensing methods, suspicious buildings can be identified with a good approximation, but they are all ex aequo. The research summarized in this paper formalizes a two-steps method to deal with a specific category of IBs, namely, those that are close to rivers. These buildings are of special interest to land authorities because people living or simply working inside them are exposed to the flood hazard that each year claims many victims all over the world. The first step of the method computes the census of the IBs located close to rivers, while the second step computes the ranking of these buildings. The ranking may be used as the IBs demolition order. In the paper, it is also proposed the structure of a Spatial DataBase (briefly, SDB) that is suitable to store the input data necessary to solve the problem, as well as the final ranking. Spatial SQL queries against the SDB implement the proposed two-steps method. A real case study was carried out to make a preliminary validation of the method.
ISSN:2220-9964
2220-9964
DOI:10.3390/ijgi8110510