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Fields for table: SPS6_OVERLAY_LAYERS

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.
LIFT_PLACEMENT4

NUMBER(2,1)
in

Thickness measurements for fourth lift placement.
TACK_COAT_BETWEEN_LIFTS
Y_NVARCHAR2(1)


Code indicating if tack coat was placed between lifts.
TRANS_JOINT_STATION

NUMBER(3)
ft

Station number of transverse paving joints within the test section.
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.
DATE_COMPLETE

DATE


Date activity was completed.
LAYER_NO

NUMBER(2)


Unique sequential number assigned to pavement layers, starting with layer 1 as the deepest layer (subgrade).
MATERIAL_TYPE
SURFACE_MATNUMBER(2)


Material code for overlay layer.
LIFT_PLACEMENT1

NUMBER(2,1)
in

Thickness measurements for first lift placement.
LIFT_PLACEMENT2

NUMBER(2,1)
in

Thickness measurements for second lift placement.
LIFT_PLACEMENT3

NUMBER(2,1)
in

Thickness measurements for third lift placement.