Bui. 852, U. S. Dept. of Agriculture. 



Plate XII, 



aulic radius. 



Rinfeet 



Diagram for the Solution of General Problems I n- 



VOLVING THE KUTTER FORMULA. 



From the intersection of II and n follow the guide lines to the inter- 

 section of sand V, or from the intersection of s and V follow the guide 

 lines to the intersection of R and n. For circular pipes remember 

 that D=4 K. 



