//(Design against Static Load) Example 4.10
//Refer Fig.4.29
//Distance between the axis of the column and the load e (mm)
e = 500
//Tensile yield strength of FeE200 Syt (N/mm2)
Syt = 200
//Factor of safety fs
fs = 4
//Load supported by the column P (kN)
P = 25
//Ratio of outer diameter to inner diameter ratio
ratio = 0.8