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clear
//
//variable declaration
//A circular steel pipe of external diameter 60 mm and thickness 8 mm is used as a simply supported beam over an effective span of 2 m. If permissible stress in steel is 150 N/mm^2,
D=(60) //external diameter,mm
d=(44) //Thickness,mm
I=(%pi*((D**4)-(d**4)))/64 //Area moment of inertia**mm^4
Ymax=(30) //extreme fibre distance,mm
Z=I/Ymax
fper=(150)
Mmax=fper*Z
//Let maximum load it can carry be P kN.
L=(2)
P=(4*Mmax)/(L*1000000)
printf("\n P= %0.2f KN",P)
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