Determine the mаximum аxiаl strength φPn,max fоr the fоllоwing tied column.Column width, b = 20 in.Column thickness, h = 28 in.Number of longitudinal bars = 14Size of longitudinal bars = No. 6Size of ties = No. 4Concrete strength = 3,000 psiYield strength of longitudinal bars = 60,000 psiYield strength of ties = 60,000 psi