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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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             Freeway overlay rehabilitation  | 
          
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             Hyson Cells  | 
          
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             40 MPa concrete in cells 75 mm to 150 mm 
            deep  | 
          
             R75  | 
          
             to  | 
          
             R100  | 
          
             $13  | 
          
             to  | 
          
             $17  | 
          
             / m²  | 
        
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             White concrete overlay  | 
          
             R55  | 
          
             to  | 
          
             R150  | 
          
             $9  | 
          
             to  | 
          
             $25  | 
          
             / m²  | 
        
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             Asphalt   | 
          
             R55  | 
          
             to  | 
          
             R75  | 
          
             $9  | 
          
             to  | 
          
             $13  | 
          
             / m²  | 
        
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             New freeway  | 
          
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             Hyson Cells  | 
          
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             40 MPa concrete in cells 100 mm to 150 mm - reduced 
            requirement for layerworks  | 
          
             R110  | 
          
             to  | 
          
             R140  | 
          
             $18  | 
          
             to  | 
          
             $23  | 
          
             / m²  | 
        
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             Jointed concrete (with or without 
dowels)  | 
          
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             Needs more layerworks than Hyson Cells. Shuttering 
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             R195  | 
          
             to  | 
          
             R220  | 
          
             $33  | 
          
             to  | 
          
             $37  | 
          
             / m²  | 
        
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             Reinforced continuous concrete  | 
          
             R195  | 
          
             to  | 
          
             R220  | 
          
             $33  | 
          
             to  | 
          
             $37  | 
          
             / m²  | 
        
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             Needs more layerworks than Hyson Cells. Shuttering 
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             Asphalt  | 
          
             R110  | 
          
             to  | 
          
             R250  | 
          
             $18  | 
          
             to  | 
          
             $42  | 
          
             / m²  | 
        
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             Needs more layerworks than Hyson Cells. Maintenance 
            every 10 years as compared to 40 years Hyson Cells 
        life  |