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Fields for table: MON_FRICTION

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.
FRICTION_METHOD_OTHER

VARCHAR2(40)


Method used to obtain friction resistance data if other than those specified.
EQUIP_BRAND

VARCHAR2(40)


Brand of friction measuring equipment.
EQUIP_MODEL

VARCHAR2(10)


Model of friction measuring equipment.
STATE_EQUIP_NO

VARCHAR2(7)


Identification of the specific piece of equipment used within an agency.
CALIBRATION_DATE

DATE


Date of the most recent calibration of the equipment.
AIR_TEMP

NUMBER(3)
deg F

Air temperature at time of testing. [AIR_TEMP_TEST]
COMMENTS

VARCHAR2(120)


Information pertinent to the friction testing conditions (include if known the number of days that have passed since the section was last rained upon).
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.
FRICTION_DATE

DATE


Date the friction measurements were made.
FRICTION_TIME

NUMBER(4)


Time of day when friction testing was performed.
FRICTION_NO_BEGIN

NUMBER(3)
%

Friction number between the vehicle wheel tire and the pavement at the beginning of the section.
FRICTION_NO_END

NUMBER(2)
%

Friction number between the vehicle wheel tire and the pavement at the end of the section.
FRICTION_SPEED

NUMBER(2)
mph

Speed the vehicle was traveling when the friction numbers were obtained.
FRICTION_METHOD
FRICTION_METHODNUMBER(1)


Code for type of method used to obtain friction resistance data.