Open GeoTechnicalPMTL: Pressuremeter Test Results - Individual Loops¶
- Class: Samples, Amalgamated Specimens and Laboratory Test Scheduling
| Heading | Unit | Type | Example | Description |
|---|---|---|---|---|
| LOCA_ID | ID | 327-16A | Location identifier | |
| PMTG_DPTH | m | 2DP | 2.7 | Depth of test |
| PMTG_TESN | X | 1 | Test reference | |
| PMTD_SEQ | 0DP | 1 | Sequence number | |
| PMTL_LNO | 0DP | 1 | Unload/reload loop number | |
| PMTL_GAA | MPa | 0DP | 139 | Unload/reload shear modulus, average |
| PMTL_SINC | % | 2DP | 3.48 | Mean strain |
| PMTL_PINC | kPa | 0DP | 1586 | Mean pressure |
| PMTL_STRA | % | 3DP | 0.105 | Strain range or amplitude |
| PMTL_PRSA | kPa | 0DP | 284 | Pressure range or amplitude |
| PMTL_NLSA | MPa | 3DP | 2.921 | Shear stress coefficient (from Bolton and Whittle, 1999) |
| PMTL_NLSB | 3DP | 0.538 | Linearity exponent (from Bolton and Whittle, 1999) | |
| PMTL_REM | X | Remarks | ||
| FILE_FSET | X | FS11 | Associated file reference (eg test result sheets) |
Notes - 2¶
- PMTL is used to transfer summary details of test loops. If detailed information is required on test loop data this would be provided as attached files and listed under FILE in the PMTG group.
- Additional headings PMTL_NLSA and PMTL_NLSB have been added to include for data from Bolton and Whittle?s (1999) interpretation of unload-reload loops to derive non-linear stiffness parameters is becoming more routine. The interpretation gives two parameters, sometimes referred to as the linearity exponent and shear stress coefficient (Beta and alpha respective).