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Fields for table: MNT_IMP_SOURCE

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.
SHRP_ID

VARCHAR2(4)


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

DATE


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

VARCHAR2(200)


Type of maintenance or rehabilitation work performed
DETAIL_LOCATION

VARCHAR2(23)


Table name of the source of the original data.