
LINE CALCULATION
This is the main equation :
Error must be less 1% of 

Solve by iteration :

This is the varation of friction factor by length of pipe.Friction factor is considerate a constant. 





This is the varation of velocity by velocity. gc and alpha is considerated constants. 


This is the variation of gravity by grabity, this expresion is a constant. 
= 

This expresion is considerated zero. 
