BENDING AND DIRECT STRESS 



245 



symmetrical reinforcement and are given in the following form 

 for convenience: 



6x t I 



(1) 

 (2) 



By referring to Fig. 87 it will be clear that the stress in the steel 

 is always less than n Xf c ', thus, if f c is kept within its allowable 

 value, the steel is sure to be safely stressed. 



