s 



BULLETIN 87, U. S. DEPARTMENT OF AGRICULTURE. 



also strengthens the flume itself. It is not believed, however, that 

 the benefit to be derived from this form of construction is sufficient 

 to compensate for the increased cost of construction and the greater 



3" X 6" Arm, 

 2.' 5" Long 



3"* 6" Brace. 

 /3 "Long 



4"x6"fbsf Batter.. 



- 

 Fig. 2.— End view of V-shaped flume, showing method of construction and double-lined box.- 



amount of material necessary. The prospective constructor should 

 be governed by the location, kind of material available for con- 

 struction, duration of life of flume desired, and material to be han- 

 dled in deciding what type of construction he will adopt. 



