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clear
//Given
//
L = 15.0 //ft - The length of the each rod
A = 46.7 //in2 - The length of the crossection
r_min = 4 //in - The radius of gyration
stress_yp = 36.0 //ksi - the yielding point stress
E = 29*(10**3) //ksi - The youngs modulus
lamda = L*12*((stress_yp/E)**0.5)/(4*(%pi)) //column slenderness ratio
if lamda<1.5 then
printf("The following approach is right")
else
printf("The following approach is wrong")
end
stress_cr = (0.658**(lamda**2))*stress_yp //ksi - The critical stress
P_n = stress_cr*A //kips //Nominal compressive strength
o = 0.85 //Resistance factor
p_u = o*P_n //kips ,column design compressive strength
printf("\n column design compressive strength %0.3f kips",p_u)
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