64 W. H. WARREN. 



h-a'-cc __ f^K 

 . 33 - cc 16000 



x 500 x 15 



cc = 10-53 



M= -^ * Jf (4-53)3 + 36 X 500 X 6 (15 . Q6)2 



+ 16000 X 7*5 (22*47) 

 = 3,295,594 inch pounds. 



The author wishes to thank Messrs. Gummow and Forrest 

 Steel Concrete Engineers, for their kindness in making the 

 concrete beams referred to in the tests given in this paper. 

 He also wishes to acknowledge the valuable assistance 

 rendered by Mr. A. J. Gibson, Assoc, m. inst. c.b. and Mr. J. 

 M. O. Oorlette, b.e., in connection with the testing and 

 recording the results obtained. 



