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PRELIMINARY STUDY OF THE STRONGBACK SYSTEM - PEER ...

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1.70<br />

25/75 Configuration Interstory Drift<br />

(R to L loading)<br />

Inter-story Drift Ratio<br />

1.65<br />

1.60<br />

10 sq. in. BRB<br />

15 sq. in. BRB<br />

20 sq. in. BRB<br />

25 sq. in. BRB<br />

1.55<br />

W14x61 W14x68 W14x74 W14x82<br />

Conventional Brace (CB) Size<br />

Figure 3.2b: Inter-story drift ratios of brace combinations in 25/75 configuration with right to left loading<br />

3.3 The 75/25 Configuration<br />

The results of the 50/50 configuration are shown in Figures 3.3a and 3.3b.<br />

Inter-story Drift Ratio<br />

1.78<br />

1.74<br />

1.7<br />

1.66<br />

1.62<br />

1.58<br />

1.54<br />

75/25 Configuration Interstory Drift<br />

(L to R loading)<br />

10 sq. in. BRB<br />

15 sq. in. BRB<br />

20 sq. in. BRB<br />

25 sq. in. BRB<br />

1.5<br />

W14x61 W14x68 W14x74 W14x82<br />

Conventional Brace (CB) Size<br />

Figure 3.3a: Inter-story drift ratios of brace combinations in 75/25 configuration with left to right loading<br />

9

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