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To find the building performance point, a modal capacitance diagram whose coordinates are modal displacement – ​​modal pseudo-acceleration is used so that the displacement demand can be obtained using the Horizontal Elastic Design Spectrum . Each k th step push TDY Equation 5B.11 obtained by the spectral displacement d ₁ ^{(X k)} and modal so-called acceleration a ₁ ^{(X, k)} values TDY Equation 5B.3 and TBDY Equation 5B.4 coordinates using base is converted to a thrust curve with shear force-peak displacement .

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Instead of the modal effective mass m _tx1 ^(X,1) obtained in the first mode of the modal analysis performed in the initial step given in TDY Equation 5B.3 , the calculated mode shape is calculated according to the mode shape obtained from the free vibration calculation (modal analysis) made at each kth thrust step. The values ​​of modal effective masses m _ix1 ^(X,k) on the i th floor are used.

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TDY Equation 5B.4 , the modal analysis made in the initial step given in the first mode (dominant mode) is the modal amplitude at the _Nth floor Φ _Nx1 ^(1), instead of the modal amplitude Φ _Nx1 ⁽¹⁾ , taking into account the stiffness change caused by the plastic hinges in each kth thrust step. The mode amplitude Φ _Nx1 ^{(k) in} the N 'th floor obtained in the first mode of the modal analysis (dominant mode) is used. Similarly, the modal contribution factor obtained as a result of the modal analysis performed in the initial step is replaced by the value Γ ₁ ^(X,1). The modal contribution factor Γ ₁ ^(X,k) value calculated as a result of the modal analysis made by taking into account the change in stiffness caused by the plastic hinges in each kth pushing step is used.

Obtaining the performance point Modal Yerdeğiştirme Talebinin Elde Edilmesi ve Performans Noktası (5B.3) described in detail inModal Yerdeğiştirme Talebinin Elde Edilmesi ve Performans Noktası Determination of Modal Displacement and Performance Point (5B.3).