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Agribusiness Landscape & Environment, Volume 17/2014 - Special Issue 2

priority in case of limited pubblic assets. The evaluation model, proposed for the
“Architectural Unit” level (A.U.), is based on the collected data and analyzes the
quality of a building, its formal and technical characteristics, its internal features
(the residential units) and its external relations (with the building block and the
quarry) as well as its economic characteristics. The A.U.’s projects are
compared by referring to four principal criteria: environmental; architectural;
technical; and economic-financial (Fig. 2). Altogether, there are 17 estimated
elements using quantitative or qualitative indicators to facilitate the judgments
of preference among the alternatives (Piantanakulchai, 2005).

Figure 1. The Architectural Units involved in the renewal project of a building block

Alternatives
A.U. 2
A.U. 11
Environmental A.U. 22 Economic-financial
characteristics A.U. 23 characteristics
Urban skyline A.U. 26 Present market price
Border of the building block Project rehabilitation cost
Link quarry/A.U. Cost/market price increase
Border of the quarry

Architectural Technical
characteristics characteristics
Construction system Term of the use
Vertical connection elements Deterioration
Habitation and external spaces Instability
Habitation and internal spaces Alteration of the facades
Quality of the facades Technical installations
Figure 2. The ANP model

After this stage, pairwise comparisons are made by the DM/experts to express their
judgments on the elements in accordance with another element of the system to
establish their relative importance. In this model, some of the elements are technical
or economic and can be quantified by a group of experts who act as public
administration consultants. Many others are of a complex technical and political or
political and cultural nature and can be controversial. For example, in order to assess
the elements called “Vertical connection elements”, described by complex quality
indicators (Fig. 3), it is deemed necessary to verify if the local social system
considers its complexity useful or useless, thus giving it a positive or negative value.

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