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Response spectrum analysis expanded modes

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mohamed hassan 2014

mohamed hassan 2014

Structural
Joined
Dec 31, 2018
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11
Location
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modal_gmldjl.jpg

Hello,
When i am performing response spectrum analysis i am choosing 12 modes to expand but this message appears:
THE NUMBER OF MODES EXPANDED 5 (mxpand command) does not match the number of modes extracted 12

,How can i solve it ?
thank you,
 
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