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//
//
//Initilization of Variables
//Flange
b=100 //mm //Width
D=80 //mm //Overall Depth
t=10 //mm //Thickness of web and flanges
L=3000 //mm //Length of strut
E=200*10**3 //N/mm**2 //Modulus of Elasticity
//Calculations
//Let centroid be at depth y_bar from top fibre
y_bar=(b*t*t*2**-1+(D-t)*t*((D-t)*2**-1+t))*(b*t+(D-t)*t)**-1 //mm
//M.I at x-x axis
I_x=1*12**-1*b*t**3+b*t*(y_bar-t*2**-1)**2+1*12**-1*t*((D-t))**3+t*((D-t))*((((D-t)*2**-1)+t)-y_bar)**2
//M.I at y-y axis
I_y=1*12**-1*t*b**3+1*12**-1*(D-t)*t**3 //mm**3
//Least M.I
I=I_y
//Since both ends are hinged
//Feective Length=Actual Length
L=3000 //mm
l=3000 //mm
//Buckling Load
P=%pi**2*E*I*(l**2)**-1*10**-3 //KN
//Result
printf("\n The Buckling Load for strut of tee section %0.2f KN",P)
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