OF IRON BEAMS. 535 



/. 12087 : 16129 :: .63 : .79 inch = ultimate 

 deflection. >o 



In experiment 25, 6 inches was the depth 

 and .58 inch = the ultimate deflection. 



In experiment 26, where the depth was 6.93 

 inches, 21401 lbs. bent the beam .6b inch, and 

 22185 lbs. broke it. 



.% 21401 : 22185 :: .65 : .67 inches = ultimate 

 deflection. 



The preceding beams were all cast erect ; those 

 which follow were cast on their sides. 



In experiment 28, where the distance of the 

 supports was 4 feet 6 inches, and the depth 5f 

 inches, 24640 lbs. bent the beam .55 inch, and 

 25144 lbs. broke it. 



/. 24640 : 25144 :: .55 : .56 inch = ultimate 

 deflection. 



In experiment 31, where the distance between 

 the supports was 4 feet 6 inches, and depth 

 5.1 inches, 27664 lbs. bent the beam .58 inch, 

 and 28168 lbs. broke it. 



.-. 27664 : 28168 :: .58 : .59 inch z= ultimate 

 deflection. 



In experiment 32, where the distance between 

 the supports was 9 feet, and depth 5| inches, 

 14506 lbs. bent the beam 2.04 inches, and 

 15196 lbs. broke it. 



