A column section shown in RCD-002 is reinforced with 8-200 bars with clear cover of 40 mm for the 10mm ties. The column is subjected to the ff. Mu = 400 kN-m, Nu = 460 kN, Vu = 320 kN (parallel to longer dimensions), fc = 28 MPa, fy = 415 MPa and fyt = 276 MPa. Determine the factored shear force Vu that the column could be subjected if the nominal strength provided by the ties is 250 kN. Use simplified calculation for concrete shear strength.