BS 1377 Part 6 1990          
Triaxial cell consolidation : consolidation readings
Location Job Ref:
BH No.
Soil Description Sample No.
Test method  BS1377: Part 6:  1990 : 5.5 Date
Initial specimen  diameter   Do mm     Cell no.      
    height     Lo mm     Pressure system no.  
    volume     Vo mm3     Test       
                Temperature 0C
    void ratio   eo        
Stage no.           1 2 3 4
Effective stress applied       s' kPa          
    increment       ds' kPa          
B value (undrained stage)                  
Volume change :cumulative       DV  mL          
    increment     dV  mL          
Height H = Ho (1   -   1  DV )   mm          
    3  Vo                
Voids ratio e = eo -(1 + eo)  DV                
Coefficient of volume compressibility (mvi)   m2/MN          
Time t50         min          
Mean height         H mm          
Coefficient of consolidation cvi m2/year          
Temperature correction factor                
Corrected coefficient       m2/year          
mvi = dV 1000 m2/MN    
   Vo  -  DV ds'       
cvi  = 0.38 H2 m2/year    

  Operator Checked Approved

                                                                                                                                        Form 6L