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Old Posted Feb 15, 2014, 8:17 PM
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seismic seismic is offline
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Join Date: Feb 2010
Location: ISLAND OF IOS CYCLADES
Posts: 107
The pretension between ground and roof, lower the natural frequency of the soil and construction.
Why you do not plan to implement vertical prestressing;

In this video https://www.youtube.com/watch?v=C2Z1zmrJhsc#t=0 NEES trying to build flexible nodes to release seismic energy.
is a better method of NEES
or my method; https://www.youtube.com/watch?v=KPaNZcHBKRI
I can tell NEES ... BUILDING IT BETTER
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