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Geotechnical Report

Published: August 31, 2017 | Last updated: July 5, 2023

What Does Geotechnical Report Mean?

Geotechnical report can be defined as a comprehensive assessment of geological conditions of a particular area where construction or installation of any kind needs to be undertaken. In trenchless technology, substructure utilities are installed without excavation. This calls for a thorough investigation of soil, and existing geologic conditions existing in the area from where the pipeline is expected to pass. It is also the first step to planning a trenhcless project before the concerned local authorities permit construction. For a successful project, a thorough investigation should be top priority.

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Trenchlesspedia Explains Geotechnical Report

Geotechnical reports are made up of laboratory results from soil samples taken from bore holes, cone penetration test, dynamic penetration test, and pore water pressure test. Geotechnical investigation report also contains information about the topography of the site, boring and test pit locations, estuaries and wetlands, lithological structure of soil and rock and its physical and mechanical properties, depth of ground water, pore water pressure, soil stratification, and location and assessment of all structures within 50 feet of the proposed pipeline path. For trenchless technology, geotechnical report should also include results from GPS, Ground Penetrating Radar (GPR), Pipe Penetrating Radar (PPR), and from old municipal records containing information of past projects in the area. Since HDD and other drilling methods involve drilling under the surface, a complete knowledge of the natural conditions, and the presence of other underground utilities is very important to prevent disastrous accidents and financial loss.

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