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HELP!!!

HELP!!!

(OP)
HOW DO YOU GET THE PERIOD TO BE .5, MY PERIOD IS TOO LARGE.

RE: HELP!!!

go to define and analisecase,choose the modal and modifay it.you will see max number of modes make it five.
 but there is important point.at least %90-95 of counstruction must join the analize.it can not be enough for high building.every time check it.
  it can be taken  3 for each floor.by the way if your period too large.you can also see period 5 and other.go to display.and and show the deforme shape for modal,dead,and other loads...using arrows near the animation button you can arrive easly 5thperiod of bulding.

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