The surface of geoSYSTEM grids filled with stone is perfect for parking lots, garage entrances, as well as in public places such as parking lots in front of the store, internal roads in the company, storage yards.
Select the type of grids depending on the traffic of vehicles:
The stability of the surface and resistance to load is guaranteed by a properly constructed foundation.
The type of foundation should comply with road construction standards, which define classes, conditions of land use and ways of compacting them in order to obtain the appropriate load capacity.
The load bearing and leveling layer must be mechanically compacted. A properly made substructure ensures that the grids will not get damaged under the wheels of cars, and that there will be no pits or ruts on the road.
Under the grids should be made a water-permeable layer with crushed stone. Its height depends on the intended use of the surface, traffic frequency and regional conditions. It guarantees the stability of the grids and resistance to loads. It prevents the formation of ruts. On less permeable soils (e.g. clay), it should be approx. 20 cm deeper.
Recommended substructure thickness
What kind of stones to fill the grids with?
The grids should be filled with 8-16 mm self-wedging crushed aggregate.
Sharp shaped decorative aggregates are the best.
Too fine fraction (2-8 mm) with oval shapes may fall under the grid and lift it upwards. On the other hand, the higher fraction (16-22 mm) does not wedge properly in the grate and may cause the aggregate to move across the surface.
Step-by-step assembly instruction
*If you fill the plates with stones, lay geotextile directly under the plates
**Installation of the geoSYSTEM F40 grids should start with the notches facing you
- To prevent weed growth, place geotextile just under the grid
- Grids should be filled with crushed, washed, self-binding stone with the size of 8 to 16 mm (smaller fraction may get under the grid, larger fraction will not wedge)
- Grids must be completely filled with aggregate. Protruding grid walls could be damaged in use
- To achieve uniform aggregate distribution, filled grids may be re-compacted using a vibrating plate compactor with a rubber pad
- If the filling material falls below the edge of the grid, spread more aggregate so that the cell walls are fully covered
- Expansion gaps between the grid and other surface should be filled with sand
- For private use, on hard ground, it is allowed to make the foundation without the load-bearing layer. In this case, the drainage layer should be 20-30 cm high.
Cell walls must be completely filled with gravel or grass. Protruding grid structure could be damaged mechanically.
While setting out surfaces with varied shape, trench banks may be reinforced with geoBORDER rims, installed with a 3 cm gap from other elements.
Eco grids are made of plastic that due to its properties stretches in high temperatures and shrinks in low temperatures – 5 cm gap should be maintained between the grid and other surfaces or objects fixed to the substructure, e.g. parking post (dimension stability +/- 3%). The gap must be filled with sand.