Use Nidagravel gravel stabilisation grids to effectively stabilise gravel on a slope permanently.
Nidagravel gravel stabilisation grids effectively prevent gravel from sliding down a slope over time. The large honeycomb grids or gravel trays are manufactured from high-quality plastic (a percentage of which is recycled) and backed with a membrane thermally bonded to the underside. Nidagravel grids are simply laid over the prepared sub-base and cut to fit the required area, then filled with gravel. The honeycomb structure of the gravel stabilisation grids holds the gravel in place permanently within the hexagonal cells. This prevents gravel migrating down the slope, prevents loss of gravel and prevents ruts and potholes from developing. In addition to solving the problem of using gravel on a slope - Nidagravel cellular gravel grids provide a much more stable gravel surface that is firm underfoot, making the gravel slope easier to walk across. Nidagravel creates a gravel surface that is wheelchair friendly, easy to walk on and push a pram or bike over as well drive and park on.
We recommend using Nidagravel 129, 130 and 140 to be laid on any gradient up to 15%.On all gradients up to 15% the weight of the gravel fill holds the sheets in place and prevents longitudinal movement.On all gradients up to 15% there will be no movement of gravel within the honeycomb cells and minimal surface migration.On all gradients up to 15% no additional form of mechanical fixing pin or clip is required.
Nidagravel grids maximum recommended slope gradient
The maximum slope gradient we recommend for using our gravel retention grids is 15%. We recommend 15% as the maximum gradient because on slopes up this gradient our honeycomb gravel grids offer excellent stabilization performance which is as good as when laying our gravel grids on a level surface. Complying with the maximum slope gradient recommendation is most important when dealing with driveways and car parks as these surfaces are subject to higher loads and a greater amount of use. Nidagravel grids do not require any clips or pins to fix the system in place as the weight of gravel loading each sheet is more than sufficient to prevent the grids from moving even when laid on a sloping driveway up the maximum 15%.
Nidagravel gravel stabilisation grids - max. gradient expressed as a Percentage: 15%Nidagravel gravel stabilisation grids - max. gradient expressed as a Ratio: 1:6.67 or 1 in 6.67Nidagravel gravel stabilisation grids - max. gradient expressed as a Degree: 8.53 degreesNidagravel gravel stabilisation grids - max. gradient expressed as a Fall (mm): 150:1000mmNidagravel gravel stabilisation grids - max. gradient expressed as a Fall (cm): 15:100cmNidagravel gravel stabilisation grids - max. gradient expressed as a Fall (m): 0.15:1m
Use the Nidagravel cellular gravel grid gradient calculator
Our simple to use gradient calculator below helps customers convert their site measurements to calculate the gradient of a slope. There are many ways to take the two measurements required. The RUN or length of the slope is the easiest measurement to take by simply using a standard tape measure or reel tape. The RISE measurement can be a little trickier to obtain. You can use a laser level, and string line level, a spirit level and pegs, or a water level to work out this measurement.
Enter your RISE and RUN figures and the calculator will do the rest.The RISE figure is the difference in height between the top and bottom of the slope.The RUN figure is the length of the slope. You can enter any unit of measurement, BUT please make sure the RISE and the RUN units of measurement used are both the same.You can enter your figures in Meters (M), Centimeters (CM), Millimeters (MM), Feet (FT) or Inches (IN).