Using Equation 5-2 



and 



Using Equation 5-1 



2.47-1.41 

 o^ = = 0.53 , 



3.41-1.67 

 o^u = : = 0.87 



'(pb 



R 



> 



0.87 



.'^<A«-^0br 



2{ai 



(1.94-2.54)^ 



2 (0.53)^ -(0.87r 



^"^ 0.53 

 J^0cWr = (1-64) (1-46) - 2.40 



(b) M^^ > M^„ (2.54 > 1.94) and a^^ > a^„ (0.87 > 0.53). 

 Hence from Table 5-1 this is Case I. 



(c) Rx Q-p-if, is the best estimate of the overfill ratio. 

 This project requires 2.40 cubic yards of fill of this 

 borrow material to satisfy each cubic yard demanded by 

 the project dimensions. 



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EXAMPLE PROBLEM 



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GIVEN : Composite native beach material phi parameters 



016 = 1-86 . 

 Composite borrow material phi parameters 



084 - 3.25 , 

 016 = 0.17 . 



5-17 



