86 



HYDKAULICS AND ITS APPLICATIONS 



120 



110 



ZO -30 -40 -50 60 70 Radiant 



Angles between divergent sides of pipes 

 FIG. 42. Percentage Loss of Head in Straight Taper Pipes of Square and Rectangular 



Section. 



or 



loss 



= 3-50 (\ 



This latter relationship becomes of importance in the design of trumpet- 

 shaped pipes to give a minimum loss of energy. 



