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//the cross-section of a cantilever beam of 2.5 m span. Material used is steel for which maximum permissible stress is 150 N/mm^2
//variable declaration
A=(180) //width of I-beam,mm
H=(400) //height of I-beam,mm
a=(170) //width of inter rectancle if I-beam consider as Rectangle with width 10,mm
h=(380) //Height of inter rectancle if I-beam consider as Rectangle with width 10,mm
I=((A*(H**3))/12)-((a*(h**3))/12)
ymax=(200) //extreme fibre,mm
Z=I/ymax
fper=(150)
Mmax=fper*Z
//If udl is w kN/m, maximum moment in cantilever
L=2 //m
w=Mmax/(L*1000000)
printf("\n w= %0.2f KN/m",w)
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