SCPT: Static Cone Penetration Tests - Data

  • Class: Samples, Amalgamated Specimens and Laboratory Test Scheduling
Heading Unit Type Example Description
LOCA_ID   ID 327-16A Location identifier
SCPG_TESN   X 3 Test reference or push number
SCPT_DPTH m 2DP 7.12 Depth of result
SCPT_RES MPa 3DP 18.065 Cone resistance (qc)
SCPT_FRES MPa 4DP 0.0968 Local unit side friction resistance (fs)
SCPT_PWP1 MPa 4DP   Face porewater pressure (u1)
SCPT_PWP2 MPa 4DP 0.0118 Shoulder porewater pressure (u2)
SCPT_PWP3 MPa 4DP   Top of sleeve porewater pressure (u3)
SCPT_CON ?S/cm 4DP   Conductivity
SCPT_TEMP degC 4DP 8.4 Temperature
SCPT_PH   4DP 6.9 pH reading
SCPT_SLP1 deg 4DP 1.7136 Slope indicator no. 1
SCPT_SLP2 deg 4DP   Slope indicator no. 2
SCPT_REDX mV 4DP   Redox potential reading
SCPT_MAGT   4DP   Magnetic flux - Total (calculated)
SCPT_MAGX   4DP   Magnetic flux - X
SCPT_MAGY   4DP   Magnetic flux - Y
SCPT_MAGZ   4DP   Magnetic flux - Z
SCPT_SMP % 4DP   Soil moisture
SCPT_NGAM counts/s 4DP   Natural gamma radiation
SCPT_REM   X   Remarks
SCPT_FRR % 2DP 0.54 Friction ratio (Rf)
SCPT_QT MPa 4DP 18.0668 Corrected cone resistance (qt) piezocone only
SCPT_FT MPa 4DP 0.1235 Corrected sleeve resistance (ft) piezocone only
SCPT_QE MPa 4DP 18.0532 Effective cone resistance (qe) piezocone only
SCPT_BDEN Mg/m3 2DP 2.21 Bulk density of material (measured or assumed)
SCPT_CPO kPa 2DP 210.46 Total vertical stress (based on SCPT_BDEN)
SCPT_CPOD kPa 2DP 107.56 Effective vertical stress (calculated from SCPT_CPO and SCPT_ISPP or SCPG_WAT)
SCPT_QNET MPa 4DP 17.8563 Net cone resistance (qn)
SCPT_FRRC % 2DP 2.76 Corrected friction ratio (Rf’) piezocone only
SCPT_EXPP MPa 4DP -0.0911 Excess pore pressure (u-uo) piezocone only
SCPT_BQ   4DP -0.0051 Pore pressure ratio (Bq) piezocone only
SCPT_ISPP MPa 4DP 0.2 In situ pore pressure (uo) (measured or assumed where not simple hydrostatic based on SCPG_WAT)
SCPT_NQT   4DP 166.0125 Normalised cone resistance (Qt)
SCPT_NFR % 4DP 0.5423 Normalised friction ratio (Fr)
FILE_FSET   X FS18 Associated file reference (eg raw field data)

Notes - 5

  • SCPT is used to include the readings from the cone converted from the measurement data using any required calibration factors and other mathematical formulae employed by the measurement contractor in accordance with the specification.
  • Readings included in group will depend on the test carried out. For example, the ground parameters measured and included in this group will depend on test type / cone.
  • The fluorescence intensity, photo-multiplier tube readings, PID, FID and conductivity data require graphic interpretation. These have been removed.
  • SCPT_BDEN and SCPT_ISPP allow for complex assumptions on density and piezometric profiles. Explanation of these assumptions is required within SCPG_REM.
  • The requirements for transfer of data in SCPT should be fully specified at the outset of testing in the investigation specification.