Waste and the Constructed Area
Pp. 93-110 (18)
Jaime Solis-Guzman and Madelyn Marrero
In this chapter, the environmental impact of waste and the constructed area
are analysed. The waste is defined as those residues most relevant to the present model:
urban waste and construction and demolition waste. For the urban waste, the generation
estimates per person per year from statistical data are employed. In the case of the
CDW, generation estimates come from a software tool, developed, among others, by
the present authors and, which gives, according to the residential typology considered,
the CDW volume expected.
Once the expected waste volumes are determined, the waste analysis is based on the
methodology found in Wackernagel´s studies into the determination of its footprint. His
work establishes that the footprint associated with waste disposal, emissions, and/or
discharges is calculated in the same way as for the materials: the same energy intensity
(embodied energy) is applied but the percentage of energy that can be recovered for
recycling is deducted.
In the constructed land EF calculation, only the land used for urbanization and
buildings is considered. In this case, a conversion factor is unnecessary because the
units are already in terms of surface area, and the area passes from m2 to ha. The
equivalence factor is that of agricultural land, since most of the infrastructure and built
land are located in areas of agricultural quality.
Absorption factor, Construction and demolition waste, Conversion
factors, Dwelling construction, Ecological footprint, Embodied energy, Emission
factor, Natural productivity, Productive land, Urban solid waste.
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