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Published byBeverley Carr Modified over 9 years ago
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1 PAVEMENT DATA ITEMS
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2 Climate_Shapes (4 LTPP zones) Soil_Shapes Metadata Estimates Section level data HPMS Pavement Data Summary level data
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3 Pavement Summary Data Included in Statewide Summaries Table: STATEWIDE SUMMARIES TABLE Field NameData TypeDescriptionValid Values Paved RMC LengthDecimal(8,3)Paved Rural Minor CollectorsReport total miles of paved roads to the nearest mile. Paved RL LengthDecimal(8,3)Paved Rural LocalsReport total miles of paved roads to the nearest mile. Paved UL LengthDecimal(8,3)Paved Urban LocalsReport total miles of paved roads to the nearest mile. Unpaved RMC LengthDecimal(8,3)Unpaved Rural Minor CollectorsReport total miles of unpaved roads to the nearest mile. Unpaved RL LengthDecimal(8,3)Unpaved Rural LocalsReport total miles of unpaved roads to the nearest mile. Unpaved UL LengthDecimal(8,3)Unpaved Urban LocalsReport total miles of unpaved roads to the nearest mile.
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Item 47: IRI (International Roughness Index) 4 Definition: A statistic used to estimate the amount of roughness in a measured longitudinal profile Extent Requirement: All paved NHS and principal arterials, rural minor arterial Sample Panel sections
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Item 47: IRI (cont’d) 5 Guidance: Code a default date when IRI date is unavailable Measure annually for NHS sections Every 2 years for other sections Include structures and railroad crossings in measurement
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Item 47: IRI (cont’d) 6 Guidance (cont’d): Measure /report consistently for same direction and lane Report the average of right and left quarter-car IRI Mean Roughness Index (MRI) Report either IRI or PSR for samples on rural major collectors, urban minor arterials and collectors
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Item 48: PSR (Present Serviceability Rating) 7 Definition: Present Serviceability Rating (PSR) for pavement condition Extent Requirement: All paved urban minor arterial, urban collector, and rural major collector Sample Panel sections
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Item 48: PSR (cont’d) 8 Guidance: Not required if IRI is reported Code PSR based on IRI data collection practices If rating is unavailable, refer to Table 4.4
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Item 49: Surface Type 9 Definition: Surface type on a given section Extent Requirement: All Sample Panel sections
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Item 49: Surface Type (cont’d) 10 Table 4.5
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Item 50: Rutting 11 Definition: Average depth of rutting Extent Requirement: All paved Sample Panel sections
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Item 50: Rutting (cont’d) 12 Guidance: Collect on a two-year cycle Report for all AC and composite surface types (where AC is the top layer) Report average rutting value of both wheel paths Report for IRI inventory direction and lane
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Item 50: Rutting (cont’d) 13 Rutting Example
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Item 51: Faulting 14 Definition: The average vertical displacement (difference in elevation) between adjacent jointed concrete panels in the direction of travel Extent Requirement: All paved Sample Panel sections
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Item 51: Faulting (cont’d) 15 Guidance: Collect on a two-year cycle Measure every joint and report as average Report for all JPCP surface types
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Item 51: Faulting (cont’d) 16 Faulting Example
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Item 51: Faulting (cont’d) 17 Faulting Example (Plan View)
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Item 52: Cracking Percent 18 Definition: Estimate of percent area with fatigue type cracking for AC pavements (typically in wheel path) and percent of slabs with cracking for PCC pavements Extent Requirement: All AC, PCC, and composite paved Sample Panel sections
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Item 52: Cracking Percent (cont’d) 19 Guidance: Report for IRI inventory direction and lane Collect on a two-year cycle Report as percent of actual pavement with fatigue cracking Determine best estimate of area with fatigue cracking
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Item 52: Cracking Percent (cont’d) 20 AC High Severity Longitudinal Cracking
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Item 52: Cracking Percent (cont’d) 21 AC Moderate Severity Fatigue Cracking
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Item 52: Cracking Percent (cont’d) 22 JCP High Severity Longitudinal Cracking
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Item 53: Cracking Length 23 Definition: Estimate of relative length in feet per mile (ft/mi) of transverse cracking for AC pavements and reflection cracking for composite pavements where AC is the top surface layer Extent Requirement: All AC (transverse cracking), and composite (reflection cracking) paved Sample Panel sections
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Item 53: Cracking Length (cont’d) 24 Guidance: Collect on a two-year cycle Report for AC and reflection cracking for composite pavements Report for IRI inventory direction and lane Cracks must be at least 6 ft. in length Report the summation of lengths of all transverse cracks
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Item 53: Cracking Length (cont’d) 25 High Severity AC/Composite Reflection Cracking
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Item 53: Cracking Length (cont’d) 26 High Severity AC Transverse Cracking
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Item 54: Year of Last Improvement 27 Definition: The year in which the roadway surface was last improved Extent Requirement: All paved Sample Panel sections
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Item 54: Year of Last Improvement (cont’d) 28 Guidance: Report for IRI inventory direction and lane Report for >= 0.5 inches of compacted pavement material Report for either the date construction ended, or opened to traffic Retain coded improvement year, until next surface improvement
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Item 55: Year of Last Construction 29 Definition: The year in which the roadway was constructed or reconstructed Extent Requirement: All paved Sample Panel sections
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Item 55: Year of Last Construction (cont’d) 30 Guidance: Report for IRI inventory direction and lane
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Item 56: Last Overlay Thickness 31 Definition: Thickness of the most recent pavement overlay Extent Requirement: All paved Sample Panel sections
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Item 56: Last Overlay Thickness (cont’d) 32 Guidance: Report for IRI inventory direction and lane Report all overlays >= 0.5 in. in thickness
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Item 57: Thickness Rigid 33 Definition: Thickness of the rigid pavement Extent Requirement: All paved Sample Panel sections
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Item 57: Thickness Rigid (cont’d) 34 Guidance: Report for IRI inventory direction and lane Must reflect the last improvement on the section Surface Type codes ‘3’, ‘4’, ‘5’, ‘7’, ‘8’, ‘9’, and ‘10’ indicate rigid pavements For composite pavements, code this item and Data Item #58
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Item 58: Thickness Flexible 35 Definition: Thickness of the flexible pavement Extent Requirement: All paved Sample Panel sections
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Item 58: Thickness Flexible (cont’d) 36 Guidance: Report for IRI inventory direction and lane Report the total thickness of AC pavement Report AC portion thickness of composite pavements Surface Type codes ‘2’,‘6’, ‘7’ and ‘8’ indicate flexible pavements For composite pavements, code this item and Data Item #57
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Item 59: Base Type 37 Definition: The base pavement type Extent Requirement: All paved Sample Panel sections
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Item 59: Base Type (cont’d) 38 Guidance: For multiple base types, code for the layer immediately below surface Report for IRI inventory direction and lane
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Item 60: Base Thickness 39 Definition: The thickness of the base pavement Extent Requirement: All paved Sample Panel sections
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Item 60: Base Thickness (cont’d) 40 Guidance: For multiple base types, report the total thickness of all base layers Report for IRI inventory direction and lane
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Item 61: Climate Zone 41 Definition: Climate zone as defined by the 4 LTPP climate zone descriptions Extent Requirement: All Sample Panel sections FHWA coded
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Item 61: Climate Zone (cont’d) 42 LTPP Climate Zone Map
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Item 62: Soil Type 43 Definition: Soil type as defined by AASHTO soil classes Extent Requirement: All paved Sample Panel sections FHWA coded
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44 Pavement Estimates Data Binder_Type Dowel_Bar Joint_Spacing
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45 Pavement Metadata Used to describe, interpret submitted data State/off-State system bifurcation Rural/urban bifurcation Functional system breakout CodeDescriptionCodeDescription 1 IRI_EQUIP_TYPE8FAULTING_METHOD 2 IRI_INTERVAL9FAULTING_EQUIP_TYPE 3 RUTTING_METHOD10CRACKING_FAT_EQUIP 4 RUTTING_EQUIP_TYPE11CRACKING_FAT_CRACK_TYPE 5 RUTTING_NUM_SENSORS12CRACKING_TRAN_EQUIP 6 RUTTING_INTERVAL13CRACKING_TRAN_CRACK_TYPE 7 FAULTING_INTERVAL14CRACKING_METHOD
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HPMS Pavement Issues Data item section lengths impact performance measures… 46 %IRI<95:50.0 IRI (in/mi)8792100122751781119091115 0.00.10.20.30.40.50.60.70.80.91.0 %IRI<95:30.0 IRI (in/mi) 93 99178102 0.00.30.50.61.0
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47 HPMS Pavement Issues Average HPMS IRI Reporting Lengths
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