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clear
//Given
//Variable declaration
L=5*1000 //Length in mm
L_star=5 //Length in m
w=9 //Uniformly distributed load in kN/m
f=7 //Bending stress in N/sq.mm
E=1e4 //Young's modulus in N/sq.mm
yc=10 //Central deflection in mm
//Calculation
W=w*L_star*1e3 //Total load in N
bd3=((W*(L**3)*12*5)/(E*yc*384)) //width X depth^3 in mm^4
M=(W*L/8) //Maximum bending moment in Nmm
bd2=(M*12/(f*2)) //width X depth^2 in mm^3
d=(bd3/bd2) //Depth of beam in mm
b=(M*12/(f*2)/d**2) //Width of beam in mm
//Result
printf("\n Depth of beam = %0.3f mm",d)
printf("\n Width of beam = %0.3f mm",b)
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