LTPP Logo Long Term Pavement Performance Logo

LTPP TSSC Home

Data User's Corner





LTPP TABLE NAVIGATOR: Field View


Fields for table: TST_L05B

Field NameCodesData TypeUnitsTest ProtocolDescription
SHRP_ID

VARCHAR2(4)


Test section identification number assigned by LTPP program. Must be combined with STATE_CODE to be unique.
LAYER_COMMENT1
L05B_COMMENT_CODESVARCHAR2(1)


Codes to describe any additional information concerning layer.
LAYER_COMMENT2
L05B_COMMENT_CODESVARCHAR2(1)


Codes to describe any additional information concerning layer.
LAYER_COMMENT3
L05B_COMMENT_CODESVARCHAR2(1)


Codes to describe any additional information concerning layer.
COMMENT_NOTE

VARCHAR2(50)


Additional comments about layer.
INV_LAYER_NO

NUMBER(2)


First layer in inventory to which the testing layer corresponds.
INV_LAYER_NO_2

NUMBER(2)


Last layer in inventory to which the testing layer corresponds.
RECORD_STATUS

VARCHAR2(1)


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


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

NUMBER(2)


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

VARCHAR2(1)


Sequential alphabetic code assigned to identify group project wide layers.
DESCRIPTION
DESCRIPTIONNUMBER(2)


Code indicating general type of layer.
LAYER_TYPE
LAYER_TYPEVARCHAR2(2)


Code identifying the type of layer.
REPR_THICKNESS

NUMBER(4,1)
in

Representative thickness for a layer in a section.
MATL_CODE
MATERIALNUMBER(3)


Code corresponding to the material type classification.