Green area per capita: the World Health Organization recommends providing every inhabitant with 9 sqm of green area in urban areas.
Open space area: UN-Habitat recommends allocating at least the 15% of the built-up area to streets.
Build up la Legge TalDeiTali del 30-03-2016 comma 3 impone un valore minimo di 20.0
Streets: UN-Habitat recommends allocating at least the 30% of the built-up area to streets.
ULC (urban land consumption): la Legge TalDeiTali del 30-03-2016 comma 3 impone un valore minimo di 45.0