DISC — Discontinuity Data¶
Path: PROJ → LOCA → DISC · Family: Ground Description & Field Logging
Editions: 4.0.3 – 4.2
Key chain
Identified by LOCA_ID, DISC_TOP, DISC_BASE, FRAC_SET, DISC_NUMB. Inherits LOCA_ID from LOCA.
| Heading | Status | Type | Unit | Editions | Description |
|---|---|---|---|---|---|
LOCA_ID (key) |
KEY | ID |
Location identifier | ||
DISC_TOP (key) |
KEY | 2DP |
m | Depth to top in hole, or distance to start on traverse, of discontinuity zone, or discontinuity | |
DISC_BASE (key) |
KEY | 2DP |
m | Depth to base in hole, or distance to end on traverse, of discontinuity zone | |
FRAC_SET (key) |
KEY | X |
Discontinuity set reference | ||
DISC_NUMB (key) |
KEY | X |
Discontinuity reference | ||
DISC_TYPE |
OTHER | PA |
Type of discontinuity | ||
DISC_DIP |
OTHER | X |
deg | Dip of discontinuity | |
DISC_DIR |
OTHER | X |
deg | Dip direction of discontinuity | |
DISC_RGH |
OTHER | X |
Small scale roughness | ||
DISC_PLAN |
OTHER | X |
Medium scale roughness | ||
DISC_WAVE |
OTHER | 1DP |
m | Large scale roughness, wavelength | |
DISC_AMP |
OTHER | 1DP |
m | Large scale roughness, amplitude | |
DISC_JRC |
OTHER | 0DP |
Joint Roughness Coefficient | ||
DISC_APP |
OTHER | X |
Surface appearance | ||
DISC_APT |
OTHER | XN |
mm | Discontinuity aperture measurement | |
DISC_APOB |
OTHER | X |
Discontinuity aperture observation | ||
DISC_INFM |
OTHER | X |
Infilling material | ||
DISC_TERM |
OTHER | PA |
Discontinuity termination (lower, upper) | ||
DISC_PERS |
OTHER | 1DP |
m | Persistence measurement | |
DISC_STR |
OTHER | 0DP |
MPa | Discontinuity wall strength | |
DISC_WETH |
OTHER | X |
Discontinuity wall weathering | ||
DISC_SEEP |
OTHER | X |
Seepage rating | ||
DISC_FLOW |
OTHER | 0DP |
l/s | Water flow estimate | |
DISC_REM |
OTHER | X |
Remarks | ||
FILE_FSET |
OTHER | X |
Associated file reference (e.g. logging field sheets) | ||
DISC_MID |
OTHER | 2DP |
m | since 4.2 | Depth to mid-point in hole, or distance to mid-point on traverse, of discontinuity zone |