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Fields for table: SMP_TDR_AUTO_MOISTURE_TLE

Field NameCodesData TypeUnitsTest ProtocolDescription
STATE_CODE
STATE_PROVINCENUMBER(2)


Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
SOIL_DIELECTRIC_CONSTANT

NUMBER(2)


Dielectric constant estimated from TDR trace.
SOIL_CONDUCTIVITY

NUMBER(5,4)


Conductivity estimated from TDR trace.
SOIL_REFLECTIVITY

NUMBER(5,4)


Reflectivity estimated from TDR trace.
DRY_DENSITY

NUMBER(4)
kg/cu m

Estimated Dry Density.
VOLUMETRIC_MOISTURE_CONTENT

NUMBER(3,1)
%

Computed volumetric moisture content.
GRAVIMETRIC_MOISTURE_CONTENT

NUMBER(3,1)
%

Computed gravimetric moisture content.
TDR_COMMENT
TDR_COMMENTVARCHAR2(1)


Code indicating potential error in the computation process or explaining why the trace was not interpreted.
SHRP_ID

VARCHAR2(4)


Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
SMP_DATE

DATE


Measurement date.
TDR_TIME

VARCHAR2(4)
hhmm

TDR measurement time.
TDR_NO

NUMBER(2)


ID number of TDR probe.
CONSTRUCTION_NO

NUMBER(2)


Event number used to relate changes in pavement structure with other time dependent data elements. This field is set to 1 when a test section is initially accepted into LTPP and is incremented with each change to the layer structure.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
TLE_BEGIN

NUMBER(3,2)
m

Starting point used in the Transmission Line Equation - measured from the beginning of TDR trace.
TLE_END

NUMBER(3,2)
m

End point used in the Transmission Line Equation - measured from the beginning of TDR trace.