Design Problem^ PrehminQru Desi gn 



Page no : 



Calculated by: 



Checked by: 

 Date : 



Quay l^all Caisson (conf.) 



Soil bearing Pressure (conl) 



p ■= Pmax Lc 



'-c 



2(222.^) 



42.1 



= 10.G k/fr. 



Slidin g 



Summation of Horizontal Forces 



R„ = //6.2 ~ 45.e> = 12.4. kjff. 



Vertical Force 



Ry^ 227.5 k/ft 



Coefficieni of Fricflon, ju = o.4o 



Horizontal Force to Initiate 5liding 



F„= /J Rv 



F^= OJO (Z22.5) = dQ.S k/ft 



Fh ^ Rh Caisson tMill not slide. 



Summar cj - The preceding calculations illustrate 

 ~ ttie lype of calculations requirsd to 

 determine the stat>ilitu of the proposed . 

 quay wqH. tJlancj oddiri'anol loading conditions 

 also ret^uire /nvesfigation as do fne 

 foundation s soil conditions. Field investigat-- 

 ions to determine soil conditions are re(^uired 

 in addition to t)udroullc model studies to 

 determine Nove erfects on the proposed island. 



* Rh '^ horizontal component of reaction, R. 

 ** Factor of safety against sf/d/ng should be 2, hence 

 Fh^zRm for safe design. Cais son should be v^/dened. 



f06 of 153 

 '20 'Man 73 



8-106 



