STEEL REINFORCEMENT 259 



NET SECTIONS AND WEIGHTS OF UNIVERSAL BARS 



Thacher Bar. The deformed bar illustrated in Fig. 2 (h), 

 called the Thacher bar, was devised in order to obtain a bar 

 so deformed that the net section throughout the bar would 

 be uniform. By having the section uniform, the bar is of 

 the same strength at every point. In forming this bar, an 



SIZE, WEIGHT, AND ULTIMATE TENSILE STRENGTH 

 OF THACHER BARS 



(Medium Steel) 



