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Fields for table: AC_COMPACTION

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.
FINAL_COVERAGE

NUMBER(2)


Number of finish roller coverages.
MEAN_AIR_TEMP

NUMBER(3)
deg F

Mean air temperature measured during compaction for asphalt concrete lift.
COMPACTED_THICK

NUMBER(2,1)
in

Compacted thickness for asphalt concrete lift.
CURING_PERIOD

NUMBER(2)
days

Length of curing period before a new lift was placed or layer was opened to traffic.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
SHRP_ID

VARCHAR2(4)


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

NUMBER(2)


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

NUMBER(1)


Lift number. Used as a key.
BREAKDOWN_ROLLER_CODE
ROLLER_CODEVARCHAR2(1)


Code indicating the type of roller used.
BREAKDOWN_COVERAGE

NUMBER(2)


Number of coverages for breakdown compaction.
INTERMED_ROLLER_CODE
ROLLER_CODEVARCHAR2(1)


Code indicating the type of intermediate roller used.
INTERMED_COVERAGE

NUMBER(2)


Number of intermediate roller coverages.
FINAL_ROLLER_CODE
ROLLER_CODEVARCHAR2(1)


Code indicating the type of finish roller used.