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Moscow calling


WSP Geotechnics is supervising a ground investigation in Moscow as part of a commission to provide geotechnical advice for a large residential development.

Earthworks are due to begin later this year. They are being undertaken by local contractors using six-wheel drive truck mounted rigs for both cable percussion and rotary boreholes.

Temperatures are as low as -20infinityC and samples are transferred to a heated building following retrieval.

The development includes several large buildings with deep basements. There are steep slopes across part of the site, with the remainder located in a flood plain.

About 40 boreholes and static soundings to depths of more than 40m will be required for the investigation. Local geology comprises glacial deposits with the exploratory holes identifying a variable sequence of sandy clays, sands and gravels.

Siteworks were complete by late January with local laboratories undertaking the soils testing under direction from WSP. Early results show that deep piling and ground improvement techniques are likely to be required.

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