Designing and Implementing a GIS- Centric Pavement Management System for the City of Alexandria, VA

Transcription

1 Designing and Implementing a GIS- Centric Pavement Management System for the City of Alexandria, VA Transmap Corporation (office) Howard Luxhoj, P.E. President and CEO hluxhoj@transmap.com (mobile) Craig Schorling, GISP BD/Account Manager cschorling@transmap.com (mobile)

2 Presentation Overview Alexandria City Statistics The System Raw Data Collection Distress Analysis Leveraging Industry Standards/Technology Tools ESRI ArcGIS MicroPAVER ASTM D Consistent Repeatable Inspection Methodology MicroPAVER Implementation Why Additional Inspections Occurred Questions

3 City of Alexandria Statistics Situated six miles south of Washington, D.C. along the western bank of the Potomac River Home to approximately 140,000 residents (2007 census estimate) 15.2 square miles of land area A population density of 9,200 persons per square mile The City of Alexandria can be classified as a dense urban city. The City s Department of Transportation & Environmental Services maintains approximately 270 centerline miles of paved roadways and alleys.

4 Team Members Transmap Corporation (Columbus, Ohio) and our partner Timmons Group (Richmond, Virginia) teamed up to implement a GIS Centric Pavement/Asset Management system. Timmons Group headquartered in Richmond, Virginia, is a leader in civil engineering, GIS and Geospatial technology services, surveying, planning, construction management, landscape architecture and environmental services. The work order management system Alexandria chose to implement data into is Azteca Systems Cityworks. Cityworks is the only GIS-centric Asset Management System available. Created especially for organizations facing the challenge of managing capital assets and infrastructure, Cityworks is uniquely designed to fully leverage your investment in GIS without costly duplication of data, risky synchronization or integration. They chose this system because Alexandria has an established GIS department, and they wanted everything to be GIS Centric.

5 Azteca Cityworks Contact Mr. Philip Mogavero North East Regional Account Manager (716) "Due to the progressive nature of the City of Alexandria, they wanted to find a system that could leverage all of their GIS data into a work order management system. For this reason, Alexandria chose Cityworks, and as a result a successful implementation is in place."

6 GIS Centric Pavement Management System

7 GIS Centric ESRI ArcGIS Pavement Centerline PCI results on centerline Sample areas defined as polygons Linear Reference System Work orders linked to ArcGIS ArcGIS Server applications

8 GIS Focused Everything Transmap does is centered on GIS Roadway features extracted as GIS layer PCI results Geodatabase ArcGIS Server Image viewer SDE Server ESRI Developers 13 years ESRI Business Partnership Value Added Reseller (VAR) Development Partner Partners on multi-year City of El Paso, TX project

9 Transmap PMS "Our System" Raw Data Collection Detailed Surface Crack Analysis Centerline File in GIS ESRI Geodatabase Network Definition Network, Branch, Section, and Inspection Family Assignments (Pavements with similar performance characteristics) Pavement Functional Classification (Primary, Secondary) Linear Reference System Construction / Major M&R Dates Distress Analysis Alligator Cracking, Edge Cracking, Potholes, Weathering & Raveling, Transverse/Longitudinal, Block Cracking, Patching & Utility Cut, Rutting MicroPAVER Loading Automated Database Load PCI Calculations Web-Based Results/ Reporting ArcGIS Server PCI Layer Extents and Location of Distresses Ad-Hoc Reporting In MicroPAVER Custom Reports Web-Based

10 Raw Data/Field Collection

11 Raw Data Collection Technology 6 Device Capable RST FWD INO DMI 3 Cameras / 1 LiDAR Resolution 1600 x 1200 Dedicated PMS Camera Best Color Profile to Extract Assets Both Stereo / Single Image

12 Approach - Raw Collection Explained Full 360 Degree View Accurate Condition Assessment Required (13 ft spacing) PMS Camera PHP Page Image ON-SIGHT VAN

13 Transmap Automation -LiDAR Laser Mounted on Ultra HD Camera Raw Laser Point Cloud Data

14 Transmap Automation Transmap collects LiDAR data. LiDAR is used for road slope/contour, automated sign detection/emissivity, and overhead bridge height measurements.

15 Distress Analysis

16 Typical Collection Method ASTM D Samples - The lowest order of the defined pavement network. All samples must belong to a network, branch and section. All pavement sections will be divided into 300 foot pieces, with the sample portion taken from the beginning of each 300 foot piece. The length of the sample area will depend on the width of the roadway. Transmap looks at the total width of the roadway on non-divided average roads. In general, the goal is to have sample areas between 1,500 sq. ft and 3,500 sq. ft. Pavement Management for Airports, Roads, and Parking Lots M.Y.Shahin

17 Transmap classifies the type of cracking and the extent

18 Network and Project level (M.Y Shahin) "For roads and parking lots, it is difficult to justify a high degree of sampling, unless a project-level evaluation is being performed". " To limit the resources required for an inspection, a sampling plan was developed so a reasonably accurate PCI could be estimated by inspecting only a limited number of the sample units in the pavement section". Transmap Standard is a Network Level pavement evaluation. The standard network level "systematic random" sample unit is percent of the total network reviewed. Due to Transmap "systematic random" standard sampling method, we evaluate an average of 28 percent of the total network.

19 Why Sample? Scott McDonald (Certified MicroPAVER Trainer) says to think of the pavement analysis like a bell curve. Real information is inside the sweet spot. If you measure too little, the appropriate amount of information is not getting attributed to the segment. This will skew your PCI to be higher. If you measure too much, you're wasting your time (Same Results). Measuring at a specific interval (middle range).

20 Need to Establish a constant repeatable inspection methodology Sample same areas every 3 years depending on communities M&R and funding Start building Life cycle curves for different pavement families Communicate what is really happening to your pavement Maintain flexibilty in adjusting standard inspection approaches and interpretation of PCI values to accomodate local conditions (road geometry, traffic patterns) and M&R strategies

21 Distress with Severity Actual Measuring Unique to a freeze thaw climate, water can enter through various forms of cracking and then re-freeze Medium Alligator Cracking Low Alligator Cracking

22 MicroPAVER Implementation

23 Used by over 600 Cities, Counties, Airports American Society for Testing and Materials (ASTM) standard D Standard D is the only pavement rating methodology recognized for rating road and parking lot pavements Full compliance with the Modified Approach to accounting for infrastructure in the Government Accounting Standards Board (GASB) Standard 34

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25 Pavement Management Extend the life of your pavement Defend your budget APWA and ASTM Standards

26 Pavement Management Life-cycle Pavement Management Process Understanding Pavement Condition Score

27 MicroPAVER Training Transmap's Trainer - Scott McDonald conducting MicroPAVER training. Two-three day training class Has trained many Transmap clients Certified MicroPAVER trainer at the Technical Assistance Center, Office of Continuing Education, and University of Illinois Involved in software development, testing

28 Network Level Implementation Transmap loads all the sample locations and analysis data into MicroPAVER in one massive data load. The traditional walk-out method is to load the data one section at a time, while you are collecting distress data.

29 Web Solutions

30 Web-Based Solutions- ArcGIS Server Go to:

31 Additional Inspections

32 Due to how Alexandria maintains their M&R, they wanted to have Transmap perform additional pavement inspections on Multi-laned Non-divided roads. One-line representation Duplicated inspections Analysis like divided road Off-set for display purposed PCI did change because of additional inspections Results were still on par with rest of the City

33 Multi-Laned Non-Divided

34 What is Next Re-inspection of surface distress every 3 years Project level Structural-Falling Weight Deflection (FWD) testing Ground penetrating radar (establish asphalt thickness) Core Samples IRI rut data

35 Questions?

36 Thank you for your time. Transmap Corporation Howard Luxhoj, P.E. President and CEO Craig Schorling, GISP BD/Account Manager (Mobile) Follow Transmap: twitter.com/transmap facebook.com/transmap (office)