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Short column under axial load

Axial load capacity of a short tied column with minimum eccentricity within the code limit. Reference: IS 456:2000 Cl. 25.1.2, 25.4, 39.3.

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# Section
b := 400 mm
D := 400 mm
l := 3.2 m
f_ck := 25 MPa
f_y := 415 MPa
A_g := b*D = mm^2
A_sc := 8*pi/4*(16 mm)^2 = mm^2

# Checks
l/D <= 12 =
e_min := max(l/500 + D/30, 20 mm) = mm
e_min <= 0.05*D =
100*A_sc/A_g =

# Capacity
A_c := A_g - A_sc = mm^2
P_u := 0.4*f_ck*A_c + 0.67*f_y*A_sc = kN

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