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MEPDG Inputs (for AASHTOWare Pavement ME) for Section:

Input

Value

Table

Field

Help Notes

Traffic

Initial AADTT	See other sheets	MEPDG_TRUCK_VOL_PARAMETERS	AADTT_FIRST_YEAR_LTPP_LANE, TRAFFIC_OPEN_YEAR_EXP_NO, GPS_SPS, EXPERIMENT_NO	Only information applying to time in the GPS-3 or SPS-2 experiment is displayed.
Number of lanes in design direction	1	See Notes		Since tables MEPDG_TRUCK_VOL_PARAMETERS, MEPDG_AXLE_PER_TRUCK and MEPDG_AXLE_LOAD_DIST_FACTOR contain information on the number of trucks in the LTPP lane, no adjustments for two-way traffic or lane distribution are required. The adjustment factors are set to 1, or 100% as appropriate.
Percent of trucks in design direction (%)	100	See Notes
Percent of trucks in design lane (%)	100	See Notes
Vehicle Class distribution and growth factor	See other sheets	MEPDG_TRUCK_VOL_PARAMETERS	Vehicle_Class, Veh_Class_Growth_Rate, Veh_Class_Growth_Function	The distribution percentage is applied to the first year’s data.
Operational speed (mph)	Use Default			Use AASHTOWare Pavement ME default
Axles per truck	See other sheets	MEPDG_AXLE_PER_TRUCK	All fields
Axle distribution	See other sheets	MEPDG_AXLE_LOAD_DIST_FACTOR	All fields

Climate

Latitude (degrees.minutes)	SECTION_COORDINATES	LATITUDE	The virtual weather station can be obtained for the LTPP section location by interpolation from the nearby weather stations.
Longitude (degrees.minutes)	SECTION_COORDINATES	LONGITUDE
Elevation (ft)	INV_ID, SPS_ID	ELEVATION
Depth of water table (ft)	SMP_WATERTAB_DEPTH_MAN	WATERTAB_DEPTH	Water table depth collected as a part of Seasonal Monitoring Program (SMP) is provided for those LTPP sections. The depth of water table is assigned based on experience and better guidelines is required for this input.

Structure (Design Features)

Joint spacing (ft)		INV_PCC_JOINT or SPS2_PCC_JOINT_DATA	AVG_CONTRACTION_SPACING	The Inventory table contains information provided during the nomination process or when section is included in the LTPP program. The average joint spacing computed using the POINT_LOC field in the MON_DIS_JPCC_FAULT table is provided for verification purpose.
Joint spacing (ft)		MON_DIS_JPCC_FAULT	POINT_LOC and CRACK_OR_JOINT
Sealant type		INV_PCC_JOINT or SPS2_PCC_JOINT_DATA	TRANSVERSE_SEAL_TYPE	The sealant type and determination of whether a joint was sealed was captured in the inventory tables at the time the section was nominated or included in the LTPP program. However, some sections where maintenance was performed, MNT_PCC_JOINT_RESEAL table in the JOINT_SEAL_TYPE table information is also provided.
Sealant type		MNT_PCC_JOINT_RESEAL	JOINT_SEAL_TYPE
Dowel diameter (in)		INV_PCC_JOINT or SPS2_PCC_JOINT_DATA	ROUND_DOWEL_DIAMETER
Edge support		INV_SHOULDER or SPS_GENERAL	SH_SURFACE_TYPE, SH_SURFACE_TYPE_OTHER, I_SH_SURFACE_TYPE, I_SH_SURFACE_TYPE_OTHER, O_SH_SURFACE_TYPE, O_SH_SURFACE_TYPE_OTHER	No edge support option for AC shoulder type
Base type		TST_L05B	LAYER_TYPE (below LAYER_TYPE=PC)	LAYER_TYPE =GB (Granular Base), LAYER_TYPE =GS (Granular Subbase), LAYER_TYPE =TB (Treated (Bound) Base), LAYER_TYPE =TS (Treated (Bound) Subbase)
Loss of full friction (age in months)	See Notes			Use AASHTOWare Pavement ME default
Surface shortwave absorptivity	See Notes			Use AASHTOWare Pavement ME default

Measured Performance (IRI, Transverse Cracking, Faulting)

Measured IRI
(m/Km)

Profile Date

IRI Average

Measured Transverse Cracks
(Count)

Survey Date

Total Number of Cracks (Sum of TRANS_CRACK_NO_H +
TRANS_CRACK_NO_M +
TRANS_CRACK_NO_L)

Measured Faulting
(mm)

Survey Date

Avg Wheelpath Fault

Traffic MEPDG Report

State Code	SHRP ID	GPS, SPS	Experiment No	Open Year	End Year	Vehicle Class	Growth Rate	Growth Function	Dist Percentage

State Code	SHRP ID	Vehicle Class	Single Axles	Tandem Axles	Tridem Axles	Quad Axles

State Code	SHRP ID	Axle Group	Month Name	Vehicle Class	Total	MEPGD Lg01	MEPGD Lg02	MEPGD Lg03	MEPGD Lg04	MEPGD Lg05	MEPGD Lg06	MEPGD Lg07	MEPGD Lg08	MEPGD Lg09	MEPGD Lg10	MEPGD Lg11	MEPGD Lg12	MEPGD Lg13	MEPGD Lg14	MEPGD Lg15	MEPGD Lg16	MEPGD Lg17	MEPGD Lg18	MEPGD Lg19	MEPGD Lg20	MEPGD Lg21	MEPGD Lg22	MEPGD Lg23	MEPGD Lg24	MEPGD Lg25	MEPGD Lg26	MEPGD Lg27	MEPGD Lg28	MEPGD Lg29	MEPGD Lg30	MEPGD Lg31	MEPGD Lg32	MEPGD Lg33	MEPGD Lg34	MEPGD Lg35	MEPGD Lg36	MEPGD Lg37	MEPGD Lg38	MEPGD Lg39	MEPGD Lg40

State Code	SHRP ID	Year	Vehicle Class	Axle Group	Record Status	Axles Truck

State Code	SHRP ID	Year	Hour	Record Status	PCT Hourly	Adj Factor

State Code	SHRP ID	Year	Month	Vehicle Class	TRF Data Type	Record Status	Monthly Ratio

State Code	SHRP ID	Year	Vehicle Class	TRF Data Type	Record Status	Percent of Trucks

State Code	SHRP ID	Year Open	Volume First Years	GPS or SPS	Experiment No