Page 119 - Advanced Design Examples of Seismic Retrofit of Structures

Example of a Two-Story Unreinforced Masonry Building Chapter 2 111

3.84 1.32 2.04 1.5 1.5 2.64
3.04 1.46 1.61 2.24 1.61 1.33 1.8 19.42
1.68 2.36 1.23
0.61
0.67
0.47 0.91 0.91 47.37 38.45 7.57 2.78 0.4
0.4 1.18 0.4 2.37
9.18 1.24 0.47
2.85 0.41 1.21 1.18
0.6
1.69
0.47 0.91 3.73 2.2
15.39 45.68 15.39 6 2.24 1.59 1.48 3.23
2.9 1.37 1.57 1.97 1.86 1.97 5.13
(A)

1.72 1.23 1.08 0.81 0.81 1.46
1.66 0.79 0.87 1.26 0.87 0.73 1.28 7.71
1.93 2.47 0.86
0.66
0.84
1.06 1.06
0.67 17.5 14.42 3.05 1.18 0.55
0.51 1.16 0.54 1.31
3.72 1.18 0.53
1.53 0.55 1.17 0.51
0.67
1.35
1.63
0.67
1.06 1.06 0.86
20.03 27.9 20.032.56 1.27 0.85 0.8 1.76
1.62 0.76 0.87 1.25 0.77 0.81 1.52
(B)
FIG. 2.58 Plan of the vulnerable walls of the example partially shotcreted building with flexible
diaphragm without horizontal ties. (A) Floor story. (B) First story.

(c) Connection of internal shotcrete to the foundation.
(d) Connection of external shotcrete to the gravels in the absence of proper
foundation.
(e) Shotcrete around openings.
(f ) Shotcrete on internal walls in multistory buildings with filler-joist
diaphragm.
(g) Shotcrete on external walls in single-story buildings with jack-arch roof
made rigid by casting concrete layer.
(h) Shotcrete on external walls in single-story buildings with jack-arch roof
left as flexible diaphragm.