geotechnical investigation 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.

  • 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

  • Testing of Geotechnical Fabric for Use as Reinforcement

    Twenty-seven commercially available petrochemical-based geotechnical fabrics, both woven and nonwoven, and one fiberglass fabric were evaluated for suitability as reinforcement in an embankment test section to be constructed on soft foundation at Pinto Pass in Mobile Harbor, Ala. by the U.S. Army Corps of Engineers Mobile District. All fabrics were subjected to initial testing in uniaxial tension ...


    By ASTM International

  • Sinkhole investigation case study

    Proposed Landfill Site - Sumter County, Florida A geophysical site characterization study was performed by GeoView to assist in the placement of a planned Class 2 Landfill in Florida. The survey area was approximately 160 acres. GeoView performed a ground penetrating radar (GPR) study map the lateral boundaries and determine apparent severity of karst (sinkhole) features. Electrical ...


    By GeoView, Inc.

  • Geotomography in Site Investigation: Simulation Study

    Tomography is the reconstruction of images from measurements of line integrals. It is used in a variety of scientific and technical applications. Advances in electronics and computers make the technique accessible to geotechnical engineering. The combination of penetration testing and tomographic reconstruction would result in a powerful site investigation tool.A tomographic software was ...


    By ASTM International

  • 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.

  • Contaminated land site investigation in Bristol

    Client: Property Developer Location: Bristol, UK Services: Contaminated Land Risk Assessment, Human Health Risk Assessment, Controlled Waters and Ecological Risk Assessment. Summary: ESI’s contaminated land assessment ensured that this former brickworks site was not registered as contaminated land under Part 2A of ...

  • Assessment of geo-hazard potential and site investigations using Resistivity Imaging

    The use of geophysical methods for evaluating subsurface contamination of sites is becoming increasingly popular all over the world. The paper presents the assessment of geo-hazard potential of a site in the City of Duncanville, Texas using Resistivity Imaging (RI). Resistivity Imaging was being used to identify areas of environmental concern and to develop a detailed image of subsurface ...


    By Inderscience Publishers

  • Determination of Swell Potential of Al-Qatif Clay

    Knowledge of the swell potential of expansive soil at the outset of an investigation can be helpful in avoiding possible damage to the structure. A review is presented of several methods that have been proposed to identify swell potential and test techniques, which are used to quantify the amount of swell. A site investigation was conducted to obtain hand-carved block specimens from a fresh ...


    By ASTM International

  • Suggested Modifications to ASTM Standard Methods When Testing Arid, Saline Soils

    Arid, saline soils are residual in nature, highly cemented, and formed in hot, arid environments. The presence of soluble and insoluble salts affects the geotechnical properties of these soils. Techniques used to determine the properties of these soils should take into consideration the presence of diagenetic minerals that are considered part of these soils. In this investigation, a typical arid, ...


    By ASTM International

  • Deep soil mixing shoring system to construct a 60 MGD, 40 foot deep wastewater pumping station

    The City of San Mateo, CA operates three wastewater pumping stations on a 80' wide lot located in a residential area near San Francisco Bay. The age of the stations range from 12 to 50 years, the stations have difficulty pumping peak wet weather flows, and have structural and maintenance problems. For these reasons, a new station was proposed to replace the existing stations. The site layout is ...


    By Geo-Con, Inc.

  • Design, Construction, and Testing of a Large-Scale, Radial Fracture Flow Model

    Materials and procedures used in previous laboratory studies of flow in fractures were reviewed. Based on this review, a 3-m-high by 1.5-m-diameter cylindrical radial flow model with a single horizontal fracture was designed and constructed out of concrete. The fracture was created by placing a sheet of geotextile between the top and bottom halves of the cylinder during pouring of the concrete. ...


    By ASTM International

  • Dynamic Centrifuge Testing of Soil-Nailed Excavations

    A series of dynamic centrifuge tests was conducted on models of soil-nailed excavations. The models were subjected to various levels of horizontal shaking to investigate the seismic stability of their prototypes. The scaling factor was 50 in all tests, the depth of the prototype excavation was H = 7.6 m, and the length of nails in each test varied between 0.33 H and 1 H. The tests revealed the ...


    By ASTM International

  • Divestment of a food manufacturing plant

    Client: Confidential Location: Somerset, Southwest England, UK Services: Strategic Advice on Brownfield Development, Site Investigation, Risk Assessment Summary: ESI was able to identify options for managing land contamination to maximise the value of site divestment, based on high quality site investigation and risk ...

  • 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.

  • Dynamic Behavior of the Bumpy Road Shaking Table System

    Vibration tests were performed on the “bumpy road shaking table” system at the Cambridge University Geotechnical Centrifuge to investigate its dynamic behavior under operating conditions. In these tests, steel plates of known weights were fastened onto the base of the model container. The container was then subjected to “earthquake motions” simulated by the shaking table system and the ...


    By ASTM International

  • Black & Veatch to design sewer/stormwater facilities for Cincinnati

    Black & Veatch (Overland Park, KS) announced that it has received a contract to design a $244 million tunnel system, pump station, and treatment facility in Cincinnati, Ohio, to help the city better manage its sewage and stormwater flows. The company said that it is currently conducting geotechnical investigations to determine the location ...

  • Unsaturated flow in anisotropic heterogeneous media: a centrifuge study

    Anisotropic and heterogeneous flow in unsaturated porous media is dependent on saturation conditions, and currently there exist limited options that adequately model this phenomenon. Herein, a modified unsaturated flow apparatus (UFA) and scaled centrifuge tests are used to investigate variations in unsaturated hydraulic conductivity. The method is used to find the unsaturated hydraulic ...


    By Inderscience Publishers

  • Incotec Bolivia CPT case study

    Vertek partner Incotec recently entered the cone penetration test business area with the purchase of a Vertek S4 Push System. Learn more about the geotechnical market in their home country of Bolivia and  ...

  • Waste management planning in the Maldives

    The island paradise of the Maldives attracts many tourists every year, but more people means more waste and a greater impact on the environment. Sweco has therefore been chosen by the Maldivan Ministry of Environment to assist in finding a good solution for management of waste on the islands.  In the assignment, Sweco has been given responsibility for detail design of the new waste ...


    By Sweco

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you