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						   Applications 
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				   HYSON CELLS COMPARED WITH CONVENTIONAL METHODS
				Harbour walls
 
      
        
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             Application and method  | 
          
             Estimated installed cost  | 
          
             Estimated installed cost  | 
          
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             S A Rand  | 
          
             US Dollars  |  
          
             unit  |   
        
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Hyson Cells "bulk pack" walls
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             R95  | 
          
             to  | 
          
             R125  | 
          
             $16  | 
          
             to  | 
          
             $21  | 
          
             / m³  |  
        
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             Gravity mass cell walls filled with compacted dredged 
            sand. Face filled with concrete   | 
          
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             Steel sheet and concrete piling  | 
          
             R190  | 
          
             to  | 
          
             R250  | 
          
             $32  | 
          
             to  | 
          
             $42  | 
          
             / m³  |  
        
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             Selected soil conditions  | 
          
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             Concrete caissons  | 
          
             R375  | 
          
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             $63  | 
          
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             / m³  |  
        
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             Large shuttering. Heavy equipment. Large batching 
            plant.  | 
          
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             Reinforced concrete panels with 
strapping  | 
          
             R250  | 
          
             to  | 
          
             R300  | 
          
             $42  | 
          
             to  | 
          
             $50  | 
          
             / m³  |  
        
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             Heavy equipment. Selected backfill.  | 
          
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