Page 50 - Advanced Design Examples of Seismic Retrofit of Structures

42 Advanced Design Examples of Seismic Retrofit of Structures

FIG. 2.27 Details of diaphragms’ panels. (A) Floor story (floor of the first story). (B) First story
(roof of the building).

design codes (e.g., [6]), the structural walls should be at least 20cm in thickness;
otherwise, they are categorized as nonload-bearing partition walls and should be
properly isolated from the diaphragm. Depending on the location in the build-
ing, there are two types of structural walls: Type-1, which is used in peripheral
walls of the building, and Type-2, which is found as internal structural walls.
Both of these walls are 35cm in thickness. The details related to these two types
of structural walls are shown in Fig. 2.29. Masses per unit area of these walls are
presented in Table 2.4.
Similar to diaphragms, each wall should be labeled by a number before per-
forming vulnerability analysis. The geometrical characteristics, wall’s direc-
tion, and its center of mass are also required. These parameters can be found
in Appendix-A in Table A-C-2-1, and are not mentioned here for the sake of
brevity. Fig. 2.30 shows the numbering of walls in both stories of the example
building. In this figure, the structural walls are shown in red and the openings
are marked by yellow lines.