Consider the manner in which a rectangular bar deforms elastically when the bar is subjected to the force?

Consider the column section below. It has eight #9 bars. The material properties are as follows: fr =4,000 psi, f, = 60 ksi, and E. = 29,000 ksi . The cross-sectional area of a #9 bar is 1.0 in.2². 8- #9 0000 2.5" 44 Axis of bending 20" 15" 2.5" 20" P M If the tensile strain in the reinforcing bars cannot be lower than 0.007 when its nominal moment capacity is reached, using the principles of mechanics to determine the maximum axial load n P, that can be carried by the column. Determine the corresponding nominal moment capacity Mn. (you cannot use any design aid) (Ans: Pn = 246 kips, Mn = 460 kip-ft)