Damage-Based Seismic Retrofitting Approach for Nonductile Reinforced Concrete Structures Using FRP Composite Wraps

Table 1

Damage levels.

Legend	Damage index	Description
.	0–0.05	No or minor
+	0.05–0.25	Light
x	0.25–0.50	Moderate
▲	0.50–0.75	Severe
●	0.75–1.00	Collapse