The phi sorting ratio is 



°(|)b 0.87 , ,, 

 _r_ = . - - - ■ = 1.64 



a^ 0.53 

 and the phi mean difference is 



^(|)b ~ ^i>n _ 2.54 - 1.94 _ , ,- 



a, " 0.53 " ^•^'^ 

 (})n 



From Figure 5-3, the fill factor is 



R^ = 2.25, i.e., 2.3 

 (b) From Figure 5-4, the renourishment factor is 



Rj = 1.33 , i.e. , 1.3 



The results indicate that the project requires 2.3 cubic meters of this 

 borrow material fill to satisfy each cubic meter required by the project 

 dimensions. Periodic renourishment using the same borrow material must be 

 provided 1.3 times as often as using original nativelike sediments in order 

 to maintain project dimensions. 



*************************************** 

 *************** EXAMPLE PROBLEM 2*************** 

 GIVEN ; Composite native beach material phi parameters 



(()-, = 3.10 (0.12 mm) 

 84 



())., = 1.86 (0.28 mm) 



Composite borrow material phi parameters 



(|)g^ = 3.25 (0.11 mm) 

 i()jg = 0.17 (0.89 mm) 



5-17 



