Optimum Position of Braces in Steel Buildings using GraphTheory

It has been discussed about designing different kinds of brace in many laws and cases. And also it has been published in many books. But in fact There is no attention about The location of the brace on the buildings. Also there is little information about the engineering. So, this plan is about the steel designs and about the location of the braces. In this research, two kinds of plan should be investigated witch each of these plans are in 5 , 8 , 12 classes , Witch it should be compared the usual location of the braces with the different location of them. We should use of the ETABS software in order to design these building cases. And the results of this software make Graph. And also the results of this research have been mentioned at the end.