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Vulkaplus-based grassed spaces

Natural, lava stone and pumice-based substrate for grassed areas
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Spaces that are not used for intensive parking or are only occasionally accessed can be made to help contribute towards the environment by converting them into grassed parking areas. One long-established method involves growing grass on a granular substrate, and this technique is now gaining in popularity. Ground in areas that is not heavily used by vehicles can be readily stabilised by growing grass on a Vulkaplus-based substrate. This creates open, well-drained spaces in which the ground status, growing potential and aesthetic effect are superior to that seen when the standard open concreting or plastic lattice systems are employed.


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The Vulkaplus substrate can be used to provide a grassed space suitable for occasional use by vehicles.    
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This space, with its good drainage potential, provides an offset for other, sealed ground areas.
Load classes:
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Specified on the basis of:

  • Axle-bearing weight of vehicles
  • Frequency of use
  • Duration of use (parking)
Load class 1: Areas only occasionally used for public parking (private cars only),
such as visitor parking areas near stadiums.
Load class 2: Parking areas with occasional heavy use (private cars,
some truck and bus use), such as parking areas for visitors
and goods deliveries near exhibition sites
Load class 3:

Parking areas used intensively over a 6 month period each year
(private cars, some truck and bus use), such as parking areas for
visitors and goods delivery near open-air swimming pools

Load class 4: Areas accessed in emergencies or for single use only,
such as verges, emergency service access routes, festival sites
 Load classes
 Vehicle classes              Frequency of use
 on an annual basis
 Frequency of 
 access by vehicle
 Available for parking   Parking spaces (S)  access routes (F)  
 1  Private cars to 3.5 t x 1  Whole year  Once to twice weekly  Half day


 2  Private cars to 3.5 t x 1  Periodic  Once daily  All day


   Trucks to 11.5 t x 2  Occasional      
 3  Private cars to 3.5 t x 1  On a 6 month basis  Two to three times daily   All day


   Trucks to 11.5 t x 2  Occasional      
 4  Trucks 16 t x  All year, but only occasionally    


Characteristics of Vulkaplus-based grassed spaces
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  • The natural igneous additives in all Vulkaplus products provide open-pored/structurally stable particles that promote the aeration and hydration of the grassed area.
  • Pumice readily retains both water and nutrients. It has the best vegetation-related properties of all loose substrate materials.
  • The product has the load-bearing capacity ( Ev225 MN / m2) and water permeability (kf > 5 x 10-6 m/s) specified by the FLL.
  • The material is guaranteed to promote vegetation growth and to retain its storage and drainage capacity.
  • No problems with approval and warranty: official approval guaranteed for use on up to 50% of free area
  • As we only use natural raw materials, all our substrates are free of potential pollutants and thus represent no risk to ground and drinking water. The quality of Vulkaplus substrates for grassed areas is controlled in-house and by external institutes, and meets RLL guidelines.
  • Reduced costs, as concrete or plastic elements are not required*
  • Reduced costs as vegetation growth is guaranteed
  • Reduced costs in view of low maintenance required
  • Environmentally-friendly igneous raw materials
  • Quality control in accordance with FLL guidelines

*The substrate can also be used as the basis for laying lattices and honeycomb concrete for grassin

 Load classes  Standard systems  Guidelines for the depth of the vegetation layer*
 1  Monolayer  15- 20 cm 
 2   Monolayer  20- 25 cm
 3   Monolayer  25- 30 cm 
 4  Double layer**   10- 15 cm Upper vegetation layer 
     20- 25 cm Lower vegetation layer
 ** When a double layer system is employed, it is advisable to ensure that the lower layer is formed of a larger grained substrate.   
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