(3) Total Horizontal Earth Force . 



F^ = 2009.034 kN/m 



(4) Total Overturning Moment . 



Mg, = 12455.10 kN - m/m 



(5) Moment Arm . 



% 12455.10 , „„ 

 "" 'JZ- 2009.034 - ^-2° ™ 



(6) Weight/Unit Length . 



Voids filled with dry sand: 



kN 

 W = L (12 + 7.9 + 0.6) {(23.56X0.25) + ( 18.85)(0.75)} = 410.56 L^ -^ 



(7) Uplift Force . 



2 



p = wd = 10.05 (11.09) = 111.45 kN/m 



B = 111.45 L^ kN/m 



(8) Hydrostatic Force (Seaward Side) . 



wd^ 10.05 (11.09)^ ,,„ „„ kN 

 F^ = y- = 2 ^^^'02 — 



(moment arm = — ^ — = 3.70 m above bottom) 



(9) Summation of Vertical Forces . 



B + Ry^ - W = 

 111.45 L + R, - 410.56 L = R, = 299.11 L 



(10) Summation of Moments About A . 



W L L L 



_^+F^ (3.70) -B/-M^-Ryf =0 



^10^ L 2 + 618.02 (3.70) - ^^^ L - 12455.10 - ^ii^ l ^ = o 

 2 e ^ 2 c 3 c 



49.85 L^^ = 10168.426 



Ry = vertical component of reaction R 



8-83 



