1. Maximum Compression

1.1. Nominal axial compressive strength at zero eccentricity

    ACI 318-19 (22.4.2.2)

1.2. Factored axial compressive strength at zero eccentricity

Since this column is a tied column with steel strain in compression:

    ACI 318-19 (Table 21.2.2)

Since the section is regular (symmetrical) about the x-axis, the moment capacity associated with the maximum axial compressive strength is equal to zero.

1.3. Maximum (allowable) factored axial compressive strength

    ACI 318-19 (Table 22.4.2.1)