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Applying Subsurface Utility Engineering to Highway and Road Projects

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Applying Subsurface Utility Engineering to Highway and Road Projects

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    1. Applying Subsurface Utility Engineering to Highway and Road Projects

    2. Existing Underground Utilities are the Veins and Arteries of our Cities and Roads And yet, we know very little about where they are

    3. WHY? Expansion Modernization Changing Utility Technology Changing Facility Missions Referenced to changed topo features No centralized records storage No standard format No responsibility

    4. Where do we get Utility Info? Visual Observation Field Survey

    5. The Engineer uses these sources to compile a utility composite that overlays the new design

    6. The Engineer ends up with utility data of unknown reliability

    7. What are these Risks?

    8. There are a lot of other risks too Redesign costs Higher construction bids Change orders Extra work orders Construction Claims Higher insurance costs Higher financing costs Bad publicity

    9. Fortunately, theres a way to handle this risk SUBSURFACE UTILITY ENGINEERING

    10. S.U.E. Combines Traditional Engineering Practices, such as ..

    11. with New Technologies

    13. The Most Significant Advancement is the Utility Quality Level Attribute

    14. Quality Level D Plotted on plans from records. Sometimes a field visit - to look for utility indications on the site - is made. Sometimes verbal recollections are plotted.

    15. Surface Appurtenances are surveyed and accurately plotted on a current site plan Utility data from records (QL D) are correlated to the appurtenances

    16. Surface Geophysical Methods used to search for and trace existing utilities. Designated utilities are then surveyed and plotted on site plan.

    17. Utilities exposed via non-destructive air-vacuum means Exposed utilities are then surveyed and plotted on site plan Elevations, Size, Condition, Materials, Precise Horizontal Positions are measured and documented

    18. QL A and QL B upgrades have been successful in reducing risk on tens of thousands of highway and road projects. This is a tried and true process

    20. Yet, SUE has not been used as a professional standard practice in some areas for many reasons. No concerted local or regional effort to educate project owners or engineers of benefits Lack of interest by state DOTs Development of SUE has been primarily on the east coast Few national providers Combined construction values in some areas lower than in others Lack of a well defined standard of care created little incentive for changing the status-quo

    21. These Impediments to SUE are rapidly disappearing

    22. There are now national standards under development American Society of Civil Engineer / American National Standards Institutes National Standard Activity

    25. And theres more! SUE is recognized as a BEST PRACTICE by AASHTO Federal Highway Administration Associated General Contractors Office of Pipeline Safety National Transportation Safety Board Network Reliability Council Many state DOTs

    26. SUE offers a One-Stop Shop for all of a projects utility needs

    30. Slide show and pictures courtesy of So-Deep, Inc.

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