lul. 852, U. S. Dept. of Agriculture. 
Plate X 1 1 
Hydraulic radius, tv.. 
Diagram for the Solution of General Problems In- 
volving THE KUTTER FORMULA. 
From the intersection of E and n follow the guide lines to the inter- 
section of s and 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 R. 
