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Erosion Control

Today with increased intensity of rainfall and flash flooding becoming more common it is more important than ever that we look at how erosion can be controlled for sloped rural driveways, pathways, detention basins and grassed landscape swales. We all want to avoid negotiating a dangerous washed-out driveway every time there is a heavy downpour.

Durability against wear and tear and aesthetics play a key role along with the practicality and simplicity of install, the performance in managing stormwater when choosing a product for your soil erosion prevention method.

TRUEGRID Erosion control pavers, are constructed with a strategically engineered structural pattern that creates maximum compressive strength while leaving as much open space as possible. The open space is what gives TRUEGRID permeable pavers their unique and beneficial qualities.

 

How Can Erosion Be Controlled

The open grid spaces help lock topsoil, gravel and surrounding landscapes into place. By installing TRUEGRID and filling them, the paver’s patented structure slows the rate of water runoff, removing the energy from the water flow so the erosion effect is reduced. If filled with angular gravel TRUEGRID is 98% permeable with almost a zero flow rate across its surface.

 

What Causes Rural Driveway Erosion

The most common cause of rural driveway erosion is flowing water. Most rural driveway construction is based on compacted roadbase or gravel. The nature of rural areas mean that most driveways are on slopes and as water runs down the driveway it picks up speed and energy causing scour to occur initially in low lying areas which then expand at an accelerated rate as the water is further concentrated.

TRUEGRID Delivers Erosion Control Solutions For Your Steep Driveway

For rural and residential sloped driveways TRUEGRID Pro Lite will stabilise the existing gravel on your driveway, reducing the energy of water to limit scouring and provide a long term low maintenance surface. .

For sloped driveways fill and compact any washed out areas until level with the balance of the surface, place TRUEGRID Pro Lite on the gravel and stake if required then fill with 10-16mm angular gravel.

New Driveway Construction

When constructing a new driveway on a slope the chart below is provided to assist in the right choice of product to deliver the best erosion prevention methodology and load carrying capacity. If you have an engineer on board they will provide you a cross section for the subbase tat is suitable to carry the load based on your site conditions.

Based on the slope and vehicle load the table below is provided as a general guide only, if more specific information is required please contact us by Requesting A Quote below. 

When constructing your driveway the TRUEGRID erosion control solution will reduce the energy of the water as it flows down the driveway, the water still exists though and if the driveway is contained by higher land each side  then the water will flow down the driveway and should be released  into a drain at the base, or if the driveway is not contained the gravel should be extended to limit the opportunity for scour in the channels beside the driveway.

How To Limit Scouring In Grass 

Often a road or pathway has a grass border alongside its length, during periods of heavy rain this grass border may scour or if it is used as trafficable extension of the path it may become boggy and unusable for emergency access etc.
For new build projects you can place TRUEGRID Pro Plus S-Flex 48 alongside the path providing a stable scour free trafficable surface.

For sloped grass parking or swale areas TRUEGRID has a range of products that can stabilise parking on slopes to provide a more stable surface and reduce the wash aways between the interaction of the pavement and grass surfaces.

For stabilising that extra accessway on sloped grass TRUEGRID Pro Lite and ROOT are an easy to install DIY product that can be used to deliver a fully grassed outcome without the scoring that would normally occur from rutting caused by vehicle loads travelling across the area.