Survey on Major Worldwide Regulations on Seismic Base Isolation of Buildings

Table 2

Nominal structural life in the Italian code (VN) [17].

Type of construction		Nominal life (years)
1	Provisional operation. Structures under construction	≤10
2	Ordinary operation, bridges, dams, and infrastructure constructions of limited size or normal importance	≥50
3	Large constructions, bridges, dams, and infrastructure constructions of limited size or normal strategic importance	≥100

Source: authors.