A column section b = 400 mm, h = 600 mm is reinforced with longitudinal bars Ast = 12-ϕ20 mm equally distributed along a

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A column section b = 400 mm, h = 600 mm is reinforced with
longitudinal bars Ast = 12-ϕ20 mm equally distributed along all
faces. Lateral ties are composed of 12 mm rectangular hoops
with clear cover equal to 40 mm and 12 mm cross ties in both
directions. Concrete yield strength f’c = 27 MPa
and steel yield strength, fy = 415 MPa. Calculate the nominal
axial strength of the column in kN.
6,985
5,588
5,938
5,239