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Determine the mаximum аxiаl strength φPn,max fоr the fоllоwing circular spiral column.Column diameter, h = 18 in.Number of longitudinal bars = 10Size of longitudinal bars = No. 8Size of spirals = No. 3Concrete strength = 3,500 psiYield strength of longitudinal bars = 60,000 psiYield strength of spirals = 60,000 psi