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clear
//
//
//Given
//Variable declaration
W=20*1000 //Total load in N
L=3.6 //Span in m
sigma_max=7 //Maximum stress in N/sq.mm
//Calculation
M1=W*L/8*1e3 //Maximum Bending moment in Nmm
b1=((M1*3/(sigma_max*2))**(1/3)) //Breadth of the beam in mm
d1=int((2*b1)) //depth of the beam in mm
M2=W*L/4*1e3 //Maximum Bending moment in Nmm
b2=(((M2*3/(sigma_max*2))**(1/3))) //Breadth of the beam in mm
d2=2*b2 //depth of the beam in mm
//Result
printf("\n Dimensions of the cross-section:")
printf("\n Breadth of beam = %0.3f mm",b1)
printf("\n Depth of beam %0.3f mm",d1)
printf("\n Dimensions of the cross-section when the beam carries a point load at the centre:")
printf("\n Breadth of beam = %0.3f mm",b2)
printf("\n Depth of beam %0.3f mm",d2)
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