GEOTECHNICAL MANAGEMENT SYSTEMS FOR DOT’S · • International GIS standard compatible with...
Transcript of GEOTECHNICAL MANAGEMENT SYSTEMS FOR DOT’S · • International GIS standard compatible with...
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Development of a National Geotechnical Data
Management System for Transportation Applications
Thomas Lefchik, P.E. Federal Highway Administration
Kirk BeachOhio Department of Transportation
Marc HoitUniversity of Florida
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Past and Future
• Past:• Paper management of data - fragmented, time
consuming and expensive• Manual information manipulation and analysis
• Future:• Seamless electronic data transfer and
management system - efficient, fast and economical
• Unlimited electronic data manipulation and analysis
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$1/2 billion in assets
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Accessing $1/2 billion in assets
20-30 person hours per week to retrieve information
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Protecting $1/2 billion in assets
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Benefits
• 10-20% less drilling• $12-24 million savings
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90% of new projects
$52 million per year
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Benefits of Electronic Data Management Using Standards
• Efficient storage and retrieval of data.
• Cost & time savings • Quality designs • Ability to be proactive • Informed decision making• Information sharing• Etc.
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Management System Basic Elements
• Data• Investigation• Testing• Monitoring• Construction
• Assets• Inventory• Evaluation & Condition
• GeoHazards• Inventory• Risk Assessment
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Pooled Fund Project TPF-5(111)
• Combine existing geotechnical data transfer standards
• Expand to include other data (i.e. geohazards, geotechnical assets)
Objectives
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Project Deliverables
• Data Dictionary• Electronic data structure for data• Electronic data structure for the
metadata• Allow local extensions and
customizations
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Collaboration Meeting
Agreed to combine existing standards
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Benefits of DIGGS
• GML Compatible• International GIS standard
compatible with mapping software• Extensible
• Has built in methods for local additions
• Allows profiles (local definitions of acceptable portions of standards –but sharable)
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Organization
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GMS Group Members•California DOT•Connecticut DOT•Florida DOT•Georgia DOT•Indiana DOT•Kansas DOT•Kentucky DOT•Minnesota DOT•Missouri DOT•North Carolina•Ohio DOT•Tennessee DOT
•FHWA•FHWA Federal Lands•United Kingdom Highway Agency•US Army Corps of Engineers•USEPA•USGS
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Geotechnical Data CoalitionMembers
• University of Florida• Consortium of Organizations for
Strong Motion Observation Systems (COSMOS)
• Association of Geotechnical and Geoenvironmental Specialists (AGS)
• Construction Industry Research and Information Association (CIRIA)
• FHWA• Ohio DOT• Special Interest Group Managers
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DIGGS DIGGS HierarchyHierarchy
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Macro Data StructureHole
SampleSpecimen
AtterbergLimit
MoistureContent
ParticleDensityStatic ConeMonitoring Point
Monitoring DataLayerDetailFractureSpacing
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Hole – Geometry• Multiple ways to define a hole
• Point, line, inclined, multi-point lineHole> <-- Vertical hole example
<geometry><gml:LineString srsName="urn:espg:crs:4326">
<gml:pos>125000 130000 255</gml:pos><gml:pos>125000 130000 200</gml:pos>
</gml:LineString></geometry>
</Hole><Hole> <--Inclined Hole Example
<geometry><gml:LineString srsName="urn:espg:crs:4326">
<gml:pos>125000 130000 255</gml:pos><gml:pos>125000 132000 200</gml:pos>
</gml:LineString></geometry>
</Hole>
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Samples, Cores and Specimens
<sample gml:id="bf6615a0-6a74-11da-8cd6-0800200c9a66"><gml:name codeSpace=“keylab1">12345678452</gml:name><depthTop uom="m">1.00</depthTop> <type>B</type> <reference>1</reference> <specimen> tests are preformed on a specimen
<gml:name codeSpace=“keylab1">12345678452</gml:name><depthTop>1.00</depthTop> <depthBase>1.00</depthBase> <description>Soft brown Clay</description> <reference>23</reference> <remarks/> <subsamplingMethod></subsamplingMethod> <roles/> <description>-</description>
</specimen></sample>
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Complete Layer Definition<layer>
<depthTop>0.00</depthTop><depthBase>3.45</depthBase><description system="Engineering geology">
<classification system="USCS">SC</<classification><description>soft to firm brown clay</description><legend system="AGS">201</legend>
</description><basisOfLayer>Geologist logged samples</basisOfLayer><geologyStratum>A</geologyStratum>
</layer><layer>
<depthTop>1.00</depthTop><depthBase>3.45</depthBase><description system="Weathering grade">
<classification system="HKGEO">VI</classification></description><basisOfLayer>Geologist logged continuous core</basisOfLayer>
</layer>
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Project Schedule
• April 2006 – Draft• September 2006 – Version 1• Next Phases
Geoenvironmental2D
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