BS 1377 Part 4 1990          
California Bearing Ratio Test
Location Job Ref:
BH No.
Soil Description Sample No.
Depth
Test method  BS1377: Part 4:  1990: 7.4* Date
Force measuring device no.       Unsoaked/soaked*      
            Mean calibration     N/div
                     
Penetration Force gauge Force on Penetration Force gauge Force on
of plunger reading     div plunger   kN of plunger reading      div plunger    kN
0.00mm         4.00        
0.25         4.25        
0.50         4.50        
0.75         4.75        
1.00         5.00        
1.25         5.25        
1.50         5.50        
1.75         5.75        
2.00         6.00        
2.25         6.25        
2.50         6.50        
2.75         6.75        
3.00         7.00        
3.25         7.25        
3.50         7.50        
3.75         7.75        
*Delete as appropriate                
Moisture content after test  
Container No.                  
Mass of wet soil+container (m2)     g        
Mass of dry soil+container (m3)     g        
Mass of container (m1)       g        
Mass of moisture (m2-m1)       g        
Mass of dry soil (m3-m1)       g        
Moisture content  w=((m1-m3)/(m3-m1))x100   %        
Average moisture content       %        
CBR value at penetration of:    
  2.5 mm   5.0  mm  
Top % %      
Bottom                
Accepted CBR     %            
         
 
 
  Operator Checked Approved

                                                                                                                                        Form 4F