A concrete cylinder 8 inches in diameter and 12 inches high was made from each batch oi 

 concrete, and the compression strength of these ' cylinders! exceeded 2,000 Ibs. per sq. in. at 

 26 days. 



The following are the results of the beam tests : 



Beam No. Lap. ^failure' P " CaUSe f failure< 



"Al" 4 inch 2945 Ibs. Slipping of steel at lap. 



,, AOJ , Tensile stress in the steel exceed- 



AZ 6 mch 322 lbs - ing its elastic limit. 



A3" 8 inch 3085 lbs. Same cause as "A2." 



(Signed) F. M. McCULLOUGH, 

 Assistant Professor in Civil Engineering. 



