Determining minimum data input levels for reliable three-dimensional soil profiling

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Title: Determining minimum data input levels for reliable three-dimensional soil profiling
Authors: Laefer, Debra F.
O'Neill, James
Williams, Derek
Permanent link: http://hdl.handle.net/10197/2164
Date: Mar-2009
Abstract: The ultimate goal of the project reported herein was to determine whether or not a readily quantifiable threshold data density could be established to accurately predict subsurface lithology. A study area in Dublin Ireland was selected for its high density of data (567 boreholes in less than 2km2) and for it being slated for the first phase of the upcoming Dublin metro. Analysis was conducted using the krieging function embedded in ArcGIS based on identifiable lithologies. Difficulties were encounter based on inconsistent labeling and the program's inability to cope with the presence of a single lithology appearing multiple times within a single soil profiles. In an area of 10,000m2, a minimumdata density of 8.0 boreholes predicted bedrock within 0.5m. Whereas in an area of 90,000m2, a sampling density of 8.3 was per 10,000m2 was needed to achieve the same accuracy, approximately double of British standards.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Publisher: American Society of Civil Engineering (ASCE)
Copyright (published version): American Society of Civil Engineers 2009
Keywords: Soil boring;Lithology;Kriging;Statistical analysis;Bore hole spacing
Subject LCSH: Boring--Ireland
Petrology--Ireland
Kriging
Soil profiles--Ireland
DOI: 10.1061/41022(336)42
Language: en
Status of Item: Peer reviewed
Is part of: Iskander, M., Laefer, D.F. & Hussein, M.H. (eds.). Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations (GSP 186) : Proceedings of Selected Sessions of the 2009 International Foundation Congress and Equipment Expo
Conference Details: Presented at the 2009 International Foundation Congress and Equipment Expo, March 14-19, Orlando, Florida
Appears in Collections:Urban Institute Ireland Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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