PLATE 11. 

 DETAILS OF A-FRAMES, DAM NO. 6. OHIO RIVER. 



SECTION AND DETAILS OF A-FRAME DAM 

 AS USED AT DAM No. 6, OHIO RIVER. 

 (1902.) 



, , Scales: 



0' ' 4' 6' 8' 



GENERAL SECTION. 



SECTION OF HEAD, LOOKING 

 DOWNSTREAM 



/ 



. Direction of 



Tlm> of pwl of 

 foUoirtac tmtl*. b r 

 p^bW again* IU 



Chain whrfl. urvinc * 

 e and lo to lock eh 

 alb to tkf chiin In raining 

 or lowering. 



, Hole for adminon of 



thumb of preceding treflUe 



XPL 



SECTION OF HEAD, LOOKING IN 

 DIRECTION OF LOWERING. 



n'tfL 



K 

 I 



O OO'OO O OOOO OO\O 



