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Fields for table: TST_AC01_LAYER

Field NameCodesData TypeUnitsTest ProtocolDescription
SHRP_ID

VARCHAR2(4)

P01
Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
LAYER_DESCRIPTION
DESCRIPTIONNUMBER(2)

P01
Code for the description of the pavement layer.
LAYER_THICKNESS

NUMBER(3,1)
in
P01
The measured thickness of an individual layer.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
STATE_CODE
STATE_PROVINCENUMBER(2)

P01
Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.
FIELD_LAYER_NO

NUMBER(2)

P01
Layer number of the sample as marked and packaged in the field.
FIELD_SET

NUMBER(2)

P01
Sequential number indicating the field sampling event. Assigned 1 for first sample event and incremented by 1 for subsequent events.
TEST_NO
TEST_NONUMBER(2)

P01
Code number indicating sample location.
LAYER_NO

NUMBER(2)

P01
Unique sequential number assigned to pavement layers, starting with layer 1 as the deepest layer (subgrade).
LOC_NO

VARCHAR2(6)

P01
Unique code number assigned to each sampling location indicating the sample type. The single character prefix indicates the sample type. The numeric suffix is the unique project location for the sample type.
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.
FIELD_LAYER_COMMENT

VARCHAR2(21)

P01
Comment on the field layer.