Issue 46

M. L. Puppio et alii, Frattura ed Integrità Strutturale, 46 (2016) 190-202; DOI: 10.3221/IGF-ESIS.46.18 192 (a) (b) Figure 1 : Livorno. Night view of the port (a) ; top view of the town (b) . (a) (b) Figure 2 : Distribution of small bridges in Tuscany. Extension of Tuscan provinces (a) ; Distribution of intersections per province (b) . (a) (b) Figure 3 : Areal density (a) and linear density (b) of reduced span bridges in Tuscany. In the province of Livorno (excluding the islands) there are 2068 intersections (2965 considering also the archipelago) divided as follows: Arezzo Firenze Grosseto Livorno Lucca Massa C. Pisa Pistoia Prato Siena N ° of Intersections - 1,0 2,0 3,0 4,0 5,0 6,0 2,36 2,30 0,95 2,44 4,30 3,18 2,29 5,55 3,55 2,25 Areal density of intersections - 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,18 0,95 0,87 0,84 1,31 1,37 0,82 1,29 0,58 1,39 Linear density of intersections