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m tx1 (X,1) is the modal effective mass obtained in the first mode of the modal analysis , the value of which is done in the initial step where second-order effects are taken into account . The value of m tx1 (X,1) is calculated only for the first step and is the sum of the floor modal effective masses m tx1 (X,1) values taken as constant throughout the entire thrust calculation .
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In this case , the thrust curve whose coordinates are base shear-peak displacement is converted into a modal capacitance diagram whose coordinates are modal displacement-modal pseudo-acceleration TDY Figure 5B.1(b) . The modal capacity diagram is used to find the building performance point and the displacement demand is obtained. Obtaining the performance point is described in Modal Yerdeğiştirme Talebinin Elde Edilmesi ve Performans Noktası Determination of Modal Displacement and Performance Point (5B.3) .Modal Yerdeğiştirme Talebinin Elde Edilmesi ve Performans Noktası (5B.3)
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