TB_GM9801_Guide_Geotech_Rpts - TECHNICAL BULLETIN Ministry...

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T ECHNICAL B ULLETIN Ministry of Transportation and Highways ENGINEERING BRANCH DESIGN STANDARDS BULLETIN NUMBER: GM9801 Page 1 of 3 Subject: Guidelines for Geotechnical Reports Date : 30 March 1998 Author : Turgut Ersoy, Ph.D., P.Eng. Bulletin Number: GM9801 Action Required : Use as a guide Bulletin Type : Guide Effective Date : 1 May 1998 Contacts Standards Affected Turgut Ersoy 250 356 0390 Geotechnical and Materials Advising Engineer No standards are directly affected by this information. GUIDELINES FOR GEOTECHNICAL REPORTS Background : Geotechnical engineering reports contain information on the application of scientific methods and engineering principles to the acquisition, interpretation and use of knowledge of soils and rocks to the solution of engineering problems. The extent and the nature of the information supplied in a report could vary from the raw geotechnical data to the detailed foundation design which may use interpreted and processed data. Geotechnical reports often form the basis for other engineers (either Ministry or Consultants) to carry out design work. Geotechnical reports may also be used for outlining ground conditions for contractors. While some agencies provide geotechnical data reports only for reference, not part of the contract documents, other agencies include geotechnical interpretive reports and geotechnical design summary reports as part of the contract documents. Some project owners believe that presenting all available geotechnical information pertaining to the site in a clearly written comprehensive report, helps the project owner in obtaining a realistic bid and reduce contingencies. There are also project owners who fear that the reports may be used by contractors as a vehicle for claims. In a 1996 forum called Geotechnical Reports in Underground Construction (ref. B.M.Bohlke “Geotech Design Reports get a Litmus Test” ASCE Civil Engineering; Dec.1996, pp. 47-49) representatives of project owners, design engineers, contractors and lawyers discussed the end effects of geotechnical reports. Owners indicated that a poorly written and ambiguous report could be used against them in a
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TB_GM9801_Guide_Geotech_Rpts - TECHNICAL BULLETIN Ministry...

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