54 



and A* =- 



(9) 



'.(*-') (10 ) 



FLAT PLATES. 



When designing flat plates either square or rectangular, 

 use the following formulae: 



WL 



Representing 



Mi = 



by a? and 



the following table will be found convenient: 



by y 



VERTICAL SHEAR IN SLABS. 



The shear is represented by V, area of steel by A s area 

 of concrete ^>VA C then stress in the concrete = 



A c 



n= rr- and stress in steel 



