Geotechnical and Materials SOQ

Subsurface Investigation and Geophysical Surveys

For both development and restoration projects, all geotechnical engineering initiatives invariably begin with a site investigation. This investigation of soil and bedrock in an area of interest is completed to determine their engineering properties including how they will interact with, on, or in a proposed construction investigation and assess the of risk to property

infrastructure, humans, and the environment. Over the last 50 years we have provided subsurface investigations and geophysical surveys for industry, municipalities, federal, state and regional government, and developers. WSP has extensive in-house geotechnical expertise and resources. By investigating subsurface conditions, our professionals can determine the physical/mechanical and chemical properties of materials that make up the ground. Our staff employs a range of investigation techniques to evaluate conditions that pose geotechnical risks for an existing structure, planned development, or restoration project. As part of our appraisal, we look at soil and rock properties, the distribution of faults, and the groundwater regime below the area of interest. We do this to understand how they will interact with proposed construction or instability issues. Reliable desk study appraisals and site investigations allow the thorough assessment of the risks posed by site conditions. The subsurface evaluation for a typical project will involve Standard Penetration Testing (SPT) wherein samples are collected using split spoon and Shelby tube methods. Rig-mounted and shallow hand auger borings are also used in establishing and documenting general soil characteristics of the site. Borings are logged on-site by a qualified staff geologist or geotechnical engineer. WSP’s integrated services also include the installation of piezometers and monitoring wells to track groundwater levels and water quality.

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