BS 1377 Part 7 1990          
Undrained Triaxial Compression Test
Location Job Ref:
BH No.
Soil Description Sample No.
Test method    BS1377: Part 7:  1990  5/15/94  8/9*  Date
Type of specimen Undisturbed/compacted*         Nominal diameter   mm
Preparation procedure                    
Specimen details Initially   After test       Sketch showing specimen
                    location in original sample
Diameter D mm     Mass   g          
Area   Ao mm2     Dry mass g        
Length   Lo mm     Moisture          
Volume   cm3     Content %        
Mass   g                
Density   Mg/m3                    
Compression test Single stage/Multistage, Stage*              
Machine no     Rate of         Cell pressure    
        Deformation   mm/min       kPa
Membrane thickness Force device no.     Mean calibration Stress factor  
    mm             n/division   kPa/division
Deformation Compression Strain Force gauge Axial force Correct Measured deviator stress
gauge   of specimen e =  DL reading P   area  
reading   DL Lo         A = Ao (s1-s3) = 1000P  
                  1 - e A  
    mm       N mm2 kPa
Sketch of Measured deviator stress   kPa  
failure conditions     Membrane correction     kPa  
      Corrected deviator stress   kPa  
      Axial strain       %  
Inclination of     Shear stress cu     kPa  
Shear surface                  
* Delete as appropriate                    
  Operator Checked Approved

                                                                                                                                        Form 7G