**4.1 Structural component fragility specification**

The structural components are inputs based on the basic building characteristics previously described. The selection process proceeds progressively from foundations through super structure. The following information summarizes the structural components included in the performance assessment model.

For each floor, the number of special moment frame beam-column joints vulnerable to story drift in each building direction are entered for each of the preselected specifications. **Table 1** and **Figure 10** summarize the defining performance groups in PACT with A, B, C, D, E the building axes in X (2) direction and 1, 2, 3, 4, 5, 6, 7 in Y (1) direction. Input of the post-tensioned slab/column joint information is similarly inserted at each floor; however, these fragilities are input as nondirectional. There are 15 joints per floor **(Table 2)**.
