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Electronic Storage and Interchange of Geotechnical Engineering Data

Electronic Storage and Interchange of Geotechnical Engineering Data. Jennifer D. McPhail. Geotech XML (GML) Project. What the GML Project is. Why the GML Project is so important. The capabilities of the GML Project. Fruition of the GML Project. Contributions to the Project.

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Electronic Storage and Interchange of Geotechnical Engineering Data

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  1. Electronic Storage and Interchange of Geotechnical Engineering Data Jennifer D. McPhail

  2. Geotech XML (GML) Project • What the GML Project is. • Why the GML Project is so important. • The capabilities of the GML Project. • Fruition of the GML Project.

  3. Contributions to the Project • Provided a global review of the current state of affairs concerning geotechnical data processing. • Established a need for a standard concerning the storage and transfer of geotechnical engineering data. • Identified geotechnical data sources and the geotechnical data interchange process. • Established design goals. • Proposed a standard. • Identified the logical structure of geotechnical data. • Identified core tags of the GML language. • Recognized privacy and authenticity issues concerning geotechnical data. • Proposed the method to continue the GML language by adding “fourth level tags”.

  4. XML

  5. Geotechnical Data Sources • Office • Field • Laboratory

  6. Office • Bid proposals • Project planning and scheduling • Work delegation • Project design • Decision-making • Computations performed

  7. Field • Plans implemented • Progress takes place • Site characterization • Investigations performed • In-situ soil tests performed • Samples obtained • Tests conducted

  8. Laboratory • Data generated • Data analyzed • Data produced

  9. The Geotechnical Data Interchange Process • The “Three-Plus-Site” Model of Data Interchange

  10. Future Scenario Better Judgements for the Continuation of the Project Data Made Publicly Available Data Captured for Research

  11. Design Goals A First Step into the Proposed Standard A Tagged Data Scheme “<“ and “>” Identify a Tag “</” and “>” Identify Closing of Tag <Project> <Client> City of Stillwater </Client> <Engineer> Prime Geotechnical </Engineer > <Consultant> Geotechs-R-Us </Consultant > </Project> The Proposed Standard

  12. The “Three-Plus-Site” Model Used Categories Established First Level of Geotechnical Data Structure Second Level of Geotechnical Data Structure Logical Structure of Data

  13. Geotechnical Data Structure: • SITE 1. The typical tasks performed in the office include: • Preparations <Prep> • Reconnaissance survey with maps and available reports • Site visit records and report • Plans and Specs <Specs> • Boring locations and depths • Sampling locations and sample types • Tests to be performed in the field • Tests to be performed in the laboratory • Results/ Reports <Reports> • Field work reports • Lab work reports • Analyses, including consultants' work • Recommendations / Final Report • SITE 2. The typical tasks performed in the field include: • Borings <Borings> • Sampling <Samples> • ID, location, depth, diameter, method • Borehole ID, depth, method, day/time, company, technician names,… • Field tests <FieldTests> • SPT • CPT • GWT • Dilatometer • Pressuremeter • Cross-hole, etc. • Plate Load Test (historic)

  14. Geotechnical Data Structure: • SITE 3. Some tasks performed in the laboratory are • Index property tests <Index> • Sieve analysis • Hydrometer analysis • Atterberg Limits • Natural water content • Specific gravity • Void ratio • Engineering/Mechanical Property Tests <Mechanical> • Compaction and relative density determination by the standard Proctor compaction test • Permeability tests • Shear strength determination • Direct shear test • Unconfined compression test • Triaxial tests • Compressibility and consolidation tests Special tests<Special> Chemical tests and special triaxial tests and others CORE TAGS

  15. <GML> <Prolog> <Project> <Name> </Name> <Date> <SecurityLevel> <Status> </Project> <Authorization> <AuthorizationCode code/> <AuthorizedBy> </AuthorizedBy> <Security> </Security> </Authorization> </Prolog> <Office> <Prep> </Prep> <Specs> </Specs> <Reports> </Reports> </Office> <Field> <Borings> <boring> (ID, depth, method, day/time, company, responsible technician name) </boring> </Borings> <Samples> <sample> (HoleID, depth, type, method) </sample> </Samples> <FieldTests> (SPT, CPT, GWT, etc.) </FieldTests> </Field> <Laboratory> <Index> (LL, PL, SL, PI, w, etc.) </Index> <Mechanical> (Triaxial, direct shear, consolidation, permeability, etc.) </Mechanical> <Special> (Chemical tests, etc.) </Special> </Laboratory> </GML>

  16. Privacy and Authenticity of Data • Maintaining Privacy by Using Public Key and Private Key System • Maintaining Authenticity by Using a Digital Signature • Examples of Tags

  17. The Future Possibilities • How Fourth Level GML Tags Can Be Selected • Definition Process of New Tags • Dr. Toll’s Work at Durham College

  18. Computer Integration with Geotechnical Equipment

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