CORRUGATED BAR COMPANY, INC. 



C = total compressive stress in steel. 

 d' = depth to center of compressive steel. 

 z = depth to resultant of C and C. 



(d) Shear, Bond and Web Reinforcement. 



V = total shear. 



V = total shear producing stress in reinforcement. 



V = shearing unit stress. 



u = bond stress per unit area of bar. 

 o = circumference or perimeter of bar. 

 2o= sum of the perimeters of all bars. 

 Ta = total stress in single reinforcing member. 

 s = Horizontal spacing of reinforcing members. 



(e) Columns. 



A = total net area. 



At = area of longitudinal steel. 



Ac = area of concrete. 



P = total safe load. 



(a) Rectangular Beams. 

 Position of neutral axis. 



Arm of resisting couple. 



FORMULAS 



k = V 2pn+ {pny — pn. 

 j = l-lk. 



(1) 

 (2) 



[For /,= 15,000 to 16,000 and /o= 600 to 650, j may be taken at ^- ] 



o 



Fiber stresses. 



/.= 



M ^ M 



Aajd pjbd^ 

 2M _ 2vfa 

 jkbd^ k 



6 



(3) 

 (4) 



