OF IRON BEAMS. 



509 



XXX. EXPERIMENT. 



Distance between supports 9 (eet. '-' 



Depth of beam 10} inches. 

 Weight of beam 227 lbs. 



Diqiensiont of Motion^ in loeh«*. ,. 



Area of top rib = 2.1 x .27 = .57 ^ JL 

 „ bottom rib = 6.14 x .77 = 4.72" ^ 



Thickness at A, .20 

 „ at B, .25 



91 at Cf .35. 



Weights 

 io lbs. 



11056 

 12436 

 13816 

 15196 

 16576 

 18592 

 19600 

 20608 

 21616 

 22624 

 236^ 

 24640 



l\ 1 



--:-*,,f».:> 



..x-i>^ 



Deflectiona io parts 

 of an inch. 



.23 - - 



24 - - 



26 - - 



.30 - - 



t34 r f 



.37 - - 



.40 - - 



.46 



.49 - - 



.51 



.54 - - 



Retained to, 

 (weights taken off.) 



P., 







+ 

 + 



.03, 

 .05' 

 .05 





06 



- - io7 



