THE INFLUENCE OF GEOTECHNICAL INVESTIGATIONS MAGNITUDE ON CHARACTERISTIC VALUES OF SOILS PARAMETERS

The main purpose of this geotechnical studies is to determine the physical and mechanical properties of the foundation soil. According to European regulations, geotechnical design shall be based on design values of geotechnical parameters derived from the characteristic values which are directly inf...

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Bibliographic Details
Published inInternational Multidisciplinary Scientific GeoConference : SGEM Vol. 2; p. 915
Main Author Olinic, Ernest
Format Conference Proceeding Journal Article
LanguageEnglish
Published Sofia Surveying Geology & Mining Ecology Management (SGEM) 01.01.2014
Subjects
Coefficient of variation
Economics
Geology
Geotechnics
Physical properties
Soils
Standard deviation
Strata
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Summary:The main purpose of this geotechnical studies is to determine the physical and mechanical properties of the foundation soil. According to European regulations, geotechnical design shall be based on design values of geotechnical parameters derived from the characteristic values which are directly influenced by the number of determinations and the coefficient of variation (ratio of standard deviation and the mean value). The coefficient of variation, through the recommended maximum values for physical characteristics of soil, underlies the delimitation of geological strata. The aim of this article is to show how the number of measurements and the coefficient of variation influence the characteristic values which, if are closer to the average, will lead to an effective and economic geotechnical design. If the difference between mean value and characteristic value is very high, this will lead to oversized geotechnical structures, and will generate much higher execution costs than the economy brought by the underevaluated geotechnical study.
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ISSN:1314-2704
DOI:10.5593/sgem2014/b12/s2.117