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Biobased Vertical drains

Biobased Vertical drains The world is changing around us. We feel the urge to act and have developed after years of research two types of vertical..., the in-house production company of the vertical drains. The Green PVD originates from the jute and coconut fiber drains developed in Asia. It has been... achieved an important milestone with the introduction of two new, sustainable types of vertical drain (PVD): the BioDrain and the Green PVD. Both PVD

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About us

of consolidation techniques like vertical drains and vacuum consolidation. Our experienced staff continuously works on the development of new ground... improvement contractor with a long track record and in-house geotechnical engineering. Our first projects in the field of prefabricated vertical drains originate from the end of the 1970-ties. Before the development of the prefabricated vertical drains, Cofra installed sand piles to accelerate

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Vacuum consolidation

paths or vertical drains into soft compressible soils with a lowering of the atmospheric pressure inside the drains to accelerate the consolidation... pressures, also known as consolidation, can take up to years depending on the thickness of the deposit. Vertical drains or also known as wick drains... the PVD is placed at close center to center distances. Vacuum consolidation acts, in principal, similar to prefabricated vertical drains (PVD

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Mining

vertical drains can also be used to lower the water table and extract water from the tailing pond. All can be installed from the top of the tailings... properties, several solutions available. The main application is to provide drainage to the tailing by installing drains. These drains can also be made active

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Consolidation

. With the application of low cost prefabricated vertical drains (PVD) a considerable reduction of the consolidation / settlement time, from years to months

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Certificates

Certificates Cofra holds a number of certificates which demonstrate the high standard of quality, health and safety embedded within our way of working. The scope of the certificates includes the execution of soil improvement techniques, performance of geotechnical designs and delivery and installation of vertical drains and other geosynthetics. Our safety policy NINA and our quality policy as envisioned by The Way of Working are practical

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