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| 132 | Kallwall and Bally steel panels, Gerb Earthquake Resistive Bases. First use of visco-dampers in USA. |
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All Images Copyright © David Ming-Li Lowe 1999-2001
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| 132 | Kallwall and Bally steel panels, Gerb Earthquake Resistive Bases. First use of visco-dampers in USA. |
...........................................................
All Images Copyright © David Ming-Li Lowe 1999-2001