The verification of ultimate story shear is asked by building code to ensure the shear strength is sufficient and no significant variation of stiffness for each story. However, there is no exact definition about calculation of ultimate story shear from the current building code. In this paper, a new method named direct moment equilibrium method is proposed. The ultimate shear is determined by directly taking moment equilibrium for each column. The ultimate story shear is obtained by taking summation of ultimate shear from each column. The proposed direct moment equilibrium method is also compared with two other methods which are familiar in practical application. Finally, the complexity of calculation and feasibility of the direct moment equilibrium method are verified.