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Рубрика: wickdrain

How Do Prefabricated Vertical Drains Work? Wick Drains and Soft Ground Consolidation Explained

How Do Prefabricated Vertical Drains Work? Wick Drains and Soft Ground Consolidation Explained

Soft, saturated soils — such as marine clays, estuarine deposits and reclaimed land — are among the most challenging substrates encountered in civil engineering. They are compressible, weak, and slow to drain, meaning that structures built on them will settle over long periods and may experience stability problems during and after construction. Prefabricated Vertical Drains (PVDs), commonly known as wick drains or band drains, are ...

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0 Comment   05.07.2026   | labels: wickdrain

Anchorage of wickdrains

Anchorage of wickdrains

During the installation of prefabricated wick drains (Prefabricated vertical drains) for soil consolidation you need some materials under the mandrel (lance) to hold the drain in the soil when you pull the mandril back. So you have to use anchor plates or anchor rods. Both is OK depending on site conditions. I find the plate more easy to use. When the mandril is pushed in ...

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0 Comment   09.09.2011   | labels: Soil Consolidation, wickdrain

Standards for prefabricated vertical drains (wickdrains)

Standards for prefabricated vertical drains (wickdrains)

ISO 12958:1999    Geotextiles and geotextile-related products -- Determination of water flow capacity in their plane ISO 10319:1993   Geotextiles -- Wide-width tensile test ISO 11058:1999   Geotextiles and geotextile-related products -- Determination of water permeability characteristics normal to the plane, without load ISO 12956:1999 Geotextiles and geotextile-related products -- Determination of the characteristic opening size Below there is a typical datasheet of a wickdrain (prefabricated vertical drain) ...

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0 Comment   01.10.2010   | labels: datasheet, Geocomposites, Soil Consolidation, specification, standards, wickdrain

Why use PVD over sand drain

Why use PVD over sand drain

Why use PVD (Prefabricated vertical drain) over sand drain Installation of PVDs typically 6,000 linear meters per day (depending on the soil and the machine used it changes from 2000 to 8000) and result in a lower project cost. No (or less) risk of PVDs breaking during installation - sand drains can have discontinuities if mandril is withdrawn too fast. No (or less) risk of ...

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0 Comment   27.07.2010   | labels: Soil Consolidation, wickdrain

Principle installation of PVD

Principle installation of PVD

Principle installation of Prefabricated Vertical drains Specialized rig Mandrill supported inside a leader held by crane or hydraulic excavator Mandrill pushed into soil by chains/cables driven by hydraulic engines. PVD installed inside a mandrill Rhombic mandrill less disturbance (Often rectangular mandrill)

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0 Comment   21.12.2009   | labels: Soil Consolidation, soil stabilization, wickdrain

What is a PVD ?

What is a PVD ?

Prefabricated Vertical Drain - PVD Also called as wickdrain. Used for soil consolidation, settlement instead of sand drains. Typically 95 -100 mm wide by 3 - 5 mm thick Synthetic core wrapped with geotextile The core may be produced from different polymers (PVC, PP, PE or mixtures ...) The geotextile jacket type can differ depending on the producer. There are also many core types in ...

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0 Comment   15.06.2009   | labels: Geocomposites, Geosynthetics, Soil Consolidation, wickdrain