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Fields for table: INV_GENERAL

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.
SUB_DRAINAGE_TYPE
SUB_DRAINAGE_TYPENUMBER(1)


Code for type of subsurface drainage provided.
SUB_DRAINAGE_TYPE_OTHER

VARCHAR2(40)


Type of subsurface drainage provided if other than those specified.
LONG_DRAIN_DIAMETER

NUMBER(2,1)
in

Inside diameter of longitudinal drainpipes used for subsurface drainage.
LATERALS_SPACING

NUMBER(3)
ft

Average spacing for subdrainage laterals.
DEPTH_TO_RIGID

NUMBER(3,1)
ft

Depth below surface to rigid layer.
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.
NO_OF_LANES

NUMBER(1)


Number of through lanes excluding ramps and access roads in the direction of travel. QC applies to GPS, see QC Manual for SPS.
PAVEMENT_TYPE
PAVEMENTNUMBER(2)


Code for general type of pavement structure. QC applies to GPS, see QC Manual for SPS.
PAVEMENT_TYPE_OTHER

VARCHAR2(40)


Other description of the type of pavement.
LANE_WIDTH

NUMBER(3,1)
ft

Width of lane being monitored.
LANE_NO

NUMBER(1)


Number identifying lane being monitored; 1 indicates outside lane.
SUB_DRAINAGE_LOCATION
SUBDRAIN_EXTENTNUMBER(1)


Code for extent of sub drains.