RELATION OF CAPACITY TO FORM BATIO. 133 



TABLE 28. Observed and computed quantities illustrating the influence of discharge on the relation of capacity to form ratio. 



The same incongruities of course character- 

 ize the tabulated numerical results. Increase 

 of discharge is accompanied, in the main, by 

 diminution of ra and a, but the indications are 

 inconclusive as to p and 6 2 . 



CONTROL OF CONSTANTS BY FINENESS. 



With reference to the influence of fineness of 

 debris, the comparative data are restricted to 

 three grades. Table 29 and figure 45 record 

 the data and results for grades (B), (C), and 

 (G), with use of a single slope and a single dis- 

 charge. The curves for grades (B) and (C), 

 which fall close together, are so different in 

 form as to intersect; and the difference shown 

 by the forms is otherwise expressed by incon- 

 gruities among the values of constants. With 

 the exception of b 2 , the constants for grade (B) 

 are intermediate between those of the other 

 grades, whereas the intermediate grade is (C). 

 If we ignore this incongruity and compare the 



constants for grades (B) and (C) with those for 

 the coarse grade (G), we find that m, p, and a 

 are all relatively small for the fine grades, or 



ISO 



100 



50- 



Grade fO> 



I 



.2 .4- .6 



FIGURE 45. Relation of capacity, C, to form ratio, K. The variation 

 of the function C 6s (1 aR) R"> withflneness of debris. Scale of C 

 vertical; scale of B horizontal. 



vary inversely with fineness, while Z> 2 varies 

 directly with fineness. The variations of m 

 and p are more pronounced than that of a. 



TABLE 29. Observed and computed quantities illustrating the influence of the fineness of debris on the relation of capacity 



to form ratio. 



