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PVD rig,preformed vertical drains installation rig, also referred to as wick drains. These are themodern equivalent of sand drains and can be used in conjunction with surcharge.PVDs may be used in a variety of applications to accelerate the settlement insoils, to form a path for the extraction of gas and leachate.

Applications
Ground improvement with verticaldrains is applied in numerous projects. Typical applications are summarizedbelow:
- Construction of roads, railways andairports 
- Land reclamation projects 
- Port Construction 
- Dyke Construction 
- Residential and industrial areas
 
Benefits
The advantages of the system PVD are:
- Guaranteed drainage, even with largedeformation and soil pressure 
- Drain system can be modified to the applicable soil conditions 
- Drains can be installed to great depths, i.e. deeper than 45 meters - Minimaldisturbance of the different soil layers 
- Dueto large production capacity very large volumes can be delivered in a shortperiod 
- Because of flexible core and the flat filter, PVDs is the favorite drain of theuser, namely the driver of the crane 
- Certified and high quality production process. 

PVD machine manufacturer PVD rig Vertical Drain Installation Machine