LTPP Logo Long Term Pavement Performance Logo

LTPP TSSC Home

Data User's Corner





LTPP TABLE NAVIGATOR: Field View


Fields for table: INV_AGGR_DUR

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.
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).
AGGR_DUR_TEXTURE
INV_TEXTUREVARCHAR2(1)


Code indicating aggregate texture.
AGGR_DUR_TEST_TYPE
AGGR_DURNUMBER(2)


Code indicating type of aggregate durability test used.
AGGR_DUR_RESULT

NUMBER(6,3)
varies

Code indicating result of durability test.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.