geotechnical data Articles

  • Geotechnical examples

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below ...


    By Advanced Geosciences, Inc.

  • Geoenvironmental and Geotechnical Data Exchange: Setting the Standard

    Information about the new DIGGS Geotechnical/Geoenvironmental EDD ...


    By EarthSoft, Inc

  • Geotechnical examples case study

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging brochure detailing the case in question. Acknowledgement: These cases have been submitted by satisfied customers whom we thank for permission to publish their data on the ...

  • Geotechnical Tomography: The Effects of Diffraction

    Tomographic imaging is the inversion of a field parameter using boundary observations. Current techniques make different simplifying hypotheses. In geotechnical tomography the straight ray assumption is most common. Problems arise when the wavelength is of the same order of magnitude as the size of the inclusion. In this case, the physics of diffraction creates significant effects behind the ...


    By ASTM International

  • Geotechnical Geophysics: Seismic refraction and refraction microtremor (ReMi) surveys

    ReMi Surveys are superior to MASW Surveys in the following ways: Ambient (ie, traffic and aircraft) “noise” is a hindrance to MASW surveys, yet is readily embraced / utilized by “passive” ReMi surveys Longer ReMi data records (ie, 30 seconds vs 8 seconds or less with MASW) capture lower frequency events We introduce high frequency impulsive energy that ...


    By ECA Geophysics

  • Geotechnical Properties of Hackensack Valley Varved Clays of New Jersey

    A special testing program was conduted on 127-mm (5-in.) diameter samples of varved clay from Hackensack Meadows, the site of a glacial lake near Secaucus, New Jersey. The program included constant rate-of-strain consolidation tests, measurement of K0 versus OCR, permeability tests on cubic samples to determine kh/kv, undrained-unconsolidated triaxial compression tests run on specimens cut at ...


    By ASTM International

  • Geotechnical Site Characterization on a Cliff for a Dam Construction - Case Study

    Background There are many cracks, joints, fractures and karstic spaces on the measurement surface of Limestone. Purpose The main subject of this study is for searching karstic features and voids within the body of local limestone for dam construction.  Process The ...


    By Advanced Geosciences, Inc.

  • Vertical Electrical Sounding for Geotechnical Site Characterization - Case Study

    Background The site borehole information demonstrates that the sediments are sitting on the top of Ignimbrite and there is also fractured Ignimbrite weathered with the content of clay is located at the bottom.  Purpose The study was made to determine the sedimentary thicknesses as well as to obtain the contact between ...


    By Advanced Geosciences, Inc.

  • Centrifuge Modeling: A Study of Similarity

    Data are presented of geotechnical centrifuge models of reinforced soil retaining walls in which the effects on wall behavior of differences between prototype and model, boundary effects, stress paths, instrumentation, and model repeatability are ...


    By ASTM International

  • Use and application of Piezocone Penetration testing in Presumpscot Formation

    Abstract: This paper examines the advantages and limitations of CPTu and SCPTu as an exploration method for geotechnical engineering of Presumpscot Formation. Discussion will include typical results of CPTu and SCPTu data for Presumpscot Formation, application and use for settlement prediction, bearing capacity analysis, slope stability evaluation, and seismic design considerations. Intent is to ...

  • Pick of the programs: slide & rocsupport

    The Geotechnical and Geo-environmental Software Directory (GGSD), established in February 1996 by Mott MAcDonald's Tim Spink, provides the most comprehensive listing of geotechnical/geoenvironmental software available. This directory (www.ggsd.com) is revised every two monthe. Here we summarise updated and new entries in the geotechnical category since February and Spink reviews ...


    By Rocscience Inc.

  • Summary of Lab Test Results on Grasspave2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...

  • Summary of Lab Test Results on Slopetame2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...


    By Invisible Structures, Inc.

  • Summary of Lab Test Results on Gravelpave2

    The attached summary of laboratory tests on bare and sand filled rings presents compression resistance data relate to the load bearing capacity of our rings for various applications. Test Data from A.G.Wassenaar, Inc., Geotechnical Consultants, Denver, Colorado, 30 April 1991. This test used Forney Compression Testing Machine, 400,000 lb capacity, at rates of 200 lb/sec (unfilled rings) and 2000 ...


    By Invisible Structures, Inc.

  • Smart Monitoring Solutions for a Hassle Free Project

    Geotechnical monitoring is very much responsible for the successful completion of any project. This monitoring is done with the help of the geotechnical systems. There are different companies that provide the customized solutions for the geotechnical monitoring. Such solutions include comprehensive programming like designing the systems, installation and delivering on the site, access of the data ...


    By Soldata Limited

  • A New Approach to Measuring Dilatancy in Saturated Sands

    The determination of in situ properties of sand has proven to be a difficult objective, especially when it includes assessing volume change characteristics like dilatancy. Difficulty in obtaining representative undisturbed specimens as well as problems with extrapolating laboratory test results to the field has caused many to place increased reliance on in situ testing. One such test that is ...


    By ASTM International

  • Determining Preconsolidation Stress and Penetration Pore Pressures from DMT Contact Pressures

    Over recent years, several geotechnical explorations in clay deposits have shown the flat dilatometer test (DMT) to provide reasonable estimates of in-situ overconsolidation ratio with depth. Why should the horizontal stress index (KD = initial contact pressure minus hydrostatic pressure normalized to the effective overburden stress) show an empirical trend with over consolidation ratio (OCR)? It ...


    By ASTM International

  • Analyzing and representing Downhole information on a daily basis using ESdat and Encom Discover - Case Study

    GHD used ESdat to optimize data collection and analysis and minimize data handling when working with downhole data information. 3D data output was provided by Encom Discover. Overview GHD is an professional services consultancy – 6000+ staff and offices in Australia, Middle East, Asia & Americas.  GIS used extensively within GHD with a ...

  • Residential sinkhole investigation csae study

    Hernando County, Florida Geophysical techniques are commonly used as part of geotechnical investigations for sinkhole claims of residential structures. GeoView, Inc. has performed thousands geophysical surveys for residential sinkhole investigations throughout Florida, Tennessee and Georgia. The investigations involve performing ground penetrating radar (GPR) and/or electrical ...


    By GeoView, Inc.

  • Seismic refraction and MASW case study

    Proposed Gatun Bridge, Colon, Panama The Autoridad del Canal de Panama (ACP) conducted a geotechnical investigation along the footprint of a proposed bridge crossing of the Panama Canal, north of the Gatun Lock. As part of the geotechnical study, GeoView, Spotlight Geophysics and ATI Panamericana were tasked to provide seismic P-wave and S-wave velocity structure of the subsurface. The ...


    By GeoView, Inc.

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