Structural soundness of bridge | Decrease in prestressing force | Ratio of geometrical moment of inertia relative to 0% reduction | Ratio of characteristic deflection relative to 0% reduction |
Sound | 0% | 1.0 | 1.0 |
Deterioration Phase 1 | 50% | 0.52 | 1.93 |
Deterioration Phase 2 | 90% | 0.35 | 2.86 |