Page 399 - Advanced Design Examples of Seismic Retrofit of Structures
P. 399
Example of a Steel Frame Building Retrofitted Chapter 5 359
40%
Cost of retrofit/cost of reconstruction 30%
35%
25%
20%
15%
10%
5%
0%
Concentric braces Eccentric braces Crossed braces
(A) Retrofit option
88
86
Construction time, days 84
82
80
78
76
Concentric braces Eccentric braces Crossed braces
(B)
Retrofit option
FIG. 5.32 Comparison of the retrofit options. (A) Construction cost. (B) Construction time.
Table 5.33. Based on these results, the diaphragm in the floor story of the main
building is semi-rigid and the diaphragm of the sports building is rigid.
5.11.3 Torsion
The procedure is similar to that in Section 5.5.3.
5.11.4 Soil-Structural Interaction
The procedure is similar to that in Section 5.5.4.
