Formula of Bazin is known like or expression of Bazin, denomination adopted in honor of Henri Bazin, to the definition, by means of bench tests, that allow to determine the coefficient C or Coefficient of Chézy that is used in the determination of the average speed in open channel and, consequently, allows to calculate of great volume using Formula of Chézy .

The mathematical formulation is:

C = \ frac {87} {1 + \ frac {m} {\ sqrt {R}}}


  • m = parameter that depends on rugosidad of the wall

  • R = Hydraulic radius

It is also seen


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