Damage states Clause Samples

Damage states. ‌ In this section the calibration of the reliability model resulting in Equation (9) is illustrated. In particular, two structural systems, represented for simplicity, yet without harm to generality, via SDOF systems are discussed: the EPP and the PIN systems of Figure 2. The damage criterion considered is a strain-based one, that is the damage states are identified by means of maximum transient displacement thresholds until collapse (drift ratio, in fact, and to this aim both SDOFs are assumed to be 1m in height). Five damage states are arbitrarily defined: as-new (AN) conditions, immediate occupancy (IO), life safety (LS), collapse prevention (CP), and failure (F) indicating collapse. The DS’ thresholds are identified on the backbones of the two systems in Figure 5. The corresponding values of drift rotations identifying the damage states are common to the two systems and are listed in Table 1.