Field Name  Codes  Data Type  Units  Test Protocol  Description 
SHRP_ID

 VARCHAR2(4)


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

ELASTIC_MOD_METHOD
 ELASTIC_MODULUS_METHOD  NUMBER(1)


 Code for the method for determination of elastic modulus.

ELASTIC_MOD_METHOD_OTHER

 VARCHAR2(40)


 Other method for determination of elastic modulus.

FLEXURAL_STRENGTH_TYPE
 FLEXURAL_STRENGTH_TYPE  NUMBER(1)


 Code for the type of flexural strength test.

FLEXURAL_STRENGTH_AGE

 NUMBER(3)
 days

 Age of the sample at the time of testing.

FLEXURAL_STRENGTH_MEAN

 NUMBER(5)
 psi

 Mean flexural strength.

FLEXURAL_STRENGTH_MIN

 NUMBER(5)
 psi

 Minimum flexural strength.

FLEXURAL_STRENGTH_MAX

 NUMBER(5)
 psi

 Maximum flexural strength.

NO_FLEXURAL_STRENGTH_TESTS

 NUMBER(3)


 Number of flexural strength tests performed.

FLEXURAL_STRENGTH_STD_DEV

 NUMBER(6,1)
 psi

 Standard deviation of the flexural strength.

COMP_STRENGTH_AGE

 NUMBER(3)
 days

 Age of the sample at the time of compressive strength testing.

STATE_CODE
 STATE_PROVINCE  NUMBER(2)


 Numerical code for state or province. U.S. codes are consistent with Federal Information Processing Standards.

COMP_STRENGTH_MEAN

 NUMBER(5)
 psi

 Mean compressive strength.

COMP_STRENGTH_MAX

 NUMBER(5)
 psi

 Maximum compressive strength.

COMP_STRENGTH_MIN

 NUMBER(5)
 psi

 Minimum compressive strength.

NO_COMP_STRENGTH_TESTS

 NUMBER(3)


 Number of compressive strength tests performed.

COMP_STRENGTH_STD_DEV

 NUMBER(5)
 psi

 Standard deviation of the compressive strength tests.

TENSILE_STRENGTH_AGE

 NUMBER(3)
 days

 Age of the sample at the time of splitting tensile strength testing.

TENSILE_STRENGTH_MEAN

 NUMBER(4)
 psi

 Mean splitting tensile strength.

TENSILE_STRENGTH_MAX

 NUMBER(4)
 psi

 Maximum splitting tensile strength.

TENSILE_STRENGTH_MIN

 NUMBER(4)
 psi

 Minimum splitting tensile strength.

NO_TENSILE_STRENGTH_TESTS

 NUMBER(3)


 Number of splitting tensile tests performed.

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.

TENSILE_STRENGTH_STD_DEV

 NUMBER(4)
 psi

 Standard deviation of the splitting tensile strength.

RECORD_STATUS

 VARCHAR2(1)


 A code indicating the general quality of the data.

LAYER_NO

 NUMBER(2)


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

ELASTIC_MOD_MEAN

 NUMBER(5)
 ksi

 Mean elastic modulus.

ELASTIC_MOD_MIN

 NUMBER(5)
 ksi

 Minimum elastic modulus.

ELASTIC_MOD_MAX

 NUMBER(5)
 ksi

 Maximum elastic modulus.

NO_ELASTIC_MOD_TESTS

 NUMBER(3)


 Number of elastic modulus tests.

ELASTIC_MOD_STD_DEV

 NUMBER(5)
 ksi

 Standard deviation of the elastic modulus.
