The short column shown in Fig. P9.4 will be subjected to an eccentric load causing uniaxial bending about the Y axis. Material strengths are f y = 60 ksi and f c = 4 ksi. ( a ) Construct the nominal...

The short column shown in Fig. P9.4 will be subjected to an eccentric load causing uniaxial bending about the Y axis. Material strengths are f y = 60 ksi and f c = 4 ksi.

( a ) Construct the nominal strength interaction curve for this column, calculating no fewer than five points, including those corresponding to pure bending, pure axial thrust, and balanced failure.

( b ) Compare the calculated values with those obtained using Graph A.10 in Appendix A.

( c ) Show on the same drawing the design strength curve obtained through introduction of the ACI ϕ factors.