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Fields for table: MON_DRAIN_PERM_CALC

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.
PVMT_THICK_DB

NUMBER(3,1)
in
NCHRP1-34D
Thickness of pavement above PATB calculated from thickness information in the LTPP database.
PATB_THICK_DB

NUMBER(3,1)
in
NCHRP1-34D
Thickness of the PATB calculated from thickness information in the LTPP database.
HPAVT

NUMBER(3,2)
ft
NCHRP1-34D
Thickness of pavement above PATB used in hydraulic conductivity calculation.
HPATB

NUMBER(3,2)
ft
NCHRP1-34D
PATB thickness used in hydraulic conductivity calculation.
MAX_INFLOW_RATE

NUMBER(5)
cu ft/day
NCHRP1-34D
Maximum inflow rate measured during field tests
ELEV_HEAD

NUMBER(3,2)
ft
NCHRP1-34D
Elevation head difference measured in field
FLOW_LENGTH

NUMBER(3,1)
ft
NCHRP1-34D
Distance from core hole to pavement edge
HYD_GRADIENT

NUMBER(3,2)
ft/ft
NCHRP1-34D
Hydraulic gradient
FLOW_PLUME_WIDTH

NUMBER(1)
ft
NCHRP1-34D
Assumed width of flow plume through PATB
CROSS_SECTION_FLOW_AREA

NUMBER(4,3)
sq ft
NCHRP1-34D
Cross sectional area of the flow plume through the PATB
SHRP_ID

VARCHAR2(4)


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

NUMBER(5)
ft/day
NCHRP1-34D
Estimated hydraulic conductivity of PATB
POINT_LOC

NUMBER(4,1)
ft
NCHRP1-34D
Longitudinal distance from the section start to the core location.
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.
RECORD_STATUS

VARCHAR2(1)


A code indicating the general quality of the data.
TEST_DATE

DATE

NCHRP1-34D
Measurement Date.
CROSS_SLOPE_ELEV

NUMBER(3,1)
%
NCHRP1-34D
Cross slope at core location calculated from elevation measurements.
GRADE_ELEV

NUMBER(2,1)
%
NCHRP1-34D
Longitudinal grade at core location calculated from elevation measurements
PVMT_THICK_ELEV

NUMBER(3,1)
in
NCHRP1-34D
Thickness of pavement above PATB calculated from elevation measurements.