b. Stability Computations . 

 (1) Overturning. 



Lc 



Bi 



B2 



(a) Weight per Unit Length of Structure . 



o 



Concrete, w = 23.56 kN/m (25 percent of area) 



Water in voids , w = 10.05 kN/m (75 percent of area) 



Height = 20.5 m 

 Equation for weight/unit length; 



and Figure 7-89). 



W = 20.5 L {(0.25)(23.56) + (0.75)( 10.05) } 



W = 275.26 L 

 a 



(b) Uplift per Unit Length of Structure ( see Equation 7-75 



, , w H. 

 D = 1 + X $fL ^ 



cosh 



2TTd 



8-79 



