CORE DRIVE - Gravel Stabiliser

Gravel is one of the most attractive, economical and versatile surfaces on earth. But without help, it’s inclined to move around, creating ridges and ending up where it shouldn’t. We have the perfect solution. Our stabilising cellular grids create a naturally porous base into which gravel sits – and stays! It’s easy to lay, inexpensive and very, very attractive.

It is a common misconception that only thicker, heavier and uglier grids can withstand consistent vehicular traffic and last. This is not the case! We are the UK’s leading gravel stabilisation experts and have specifically designed and manufactured a range of gravel stabilisation grids each intended for a specific traffic load and site condition. Whether your project is a sloping domestic drive or a heavily trafficked commercial parking area… we will have the grid you are looking for!

 

High Load Bearing

CORE Drive’s honeycomb grid construction provides tightly packed pockets of loose gravel which create a completely porous hard standing, allowing extreme pressure from vehicular traffic to be applied without the aggregate displacing, this makes CORE drive gravel grid more practical and versatile than other more costly paving options.

Attached High Quality Membrane

Our unique manufacturing technique enables us to heat weld a high quality geotextile membrane to the underside of every panel. This heat weld attaches the membrane firmly to the honeycomb structure and creates a tray for the gravel to sit in, this prevents the gravel from migrating under the cell wall which causes the honeycomb structure to rise and become exposed making it susceptible to irreparable damage.

Interlocking Mechanism

Each panel also has an interlocking mechanism on all four side which allows all adjacent panels to be connected in every direction forming a continuous matrix across the entire surface. The heat welded membrane combined with the continuous matrix has enabled us to create some incredibly thin and unobtrusive driveway grid systems that are virtually invisible when filled. These thinner grids will greatly reduce your gravel consumption by up to 60%, yet are still capable of withstanding regular vehicular traffic.

Black vs White

CORE Landscape Products create both black and white grids, as you can see from the image, using a light aggregate over a black grid or a dark aggregate over a white grid makes very little difference visually. Our Black grid is made from 100% recycled polypropylene (PP). Our white grid is made from 100% virgin polypropylene (PP), which is fully recyclable… So both grids have good green credentials.

So why the choice?

Both gravel cells have the same test results for vertical load bearing and can therefore take the same vehicular traffic on a flat surface.  However, the white cells are better suited to sloping driveways as they are slightly more flexible. The cell wall of the white grid can withstand a greater force applied horizontally making it more capable of supporting the angled load exerted by a vehicle as it makes its way up an incline. Both our black and white driveway grids are SUDS compliant and DDA complaint.

CORE DRIVE – Benefits

Click on the icons to find out more information about our cellular grids. Whether you’re looking for a SUDS complaint drive or a DDA complaint gravel surface we will be able to help.

suds

CORE DRIVE - Specifications

We have specifically designed and manufactured a range of gravel stabilisation grids for a variety of applications and traffic loads . Please use our ‘Grid Selector’ to help you decide which of our Gravel grids is best suited to your project. For further advice or assistant please call a member of our technical team who will be happy to help. 01753 652 555

To download PDF versions of our data sheets please click on the thumbnails.

CORE DRIVE 38-25 R

CORE DRIVE 38-25 

CORE DRIVE 50-30

CORE DRIVE 50-35 R

CORE DRIVE 50-35 

CORE DRIVE 60-40 R

CORE DRIVE - Installation Guides

CORE DRIVE INSTALL New Drive Construction

CORE DRIVE INSTALL Over Existing Hard Surface

CORE DRIVE INSTALL Subbase Calculation

WHAT VEHICLES CAN USE CORE DRIVE

Core Drive can be used by almost any wheeled vehicle, we have grids suitable for vehicles ranging from golf buggies to fire engines. Please do not hesitate to contact us directly to discuss the best grid for your project.

Please note, whilst some of our grids are capable of taking HGV traffic loads, no plastic gravel stabilising grid available on today’s market will withstand the immense pressure and friction created by the screwing action of a large vehicle performing a stationary maneuver.

IS CORE DRIVE ENVIRONMENTALLY FRIENDLY

Yes!

Core Drive provides a porous paving solutions which returns water back to the environment where it belongs instead of pooling or causing the flooding problems of traditional driveway surfaces. In addition Core Drive is made from pure white recyclable virgin Polypropylene (PP) or 100% recycled black PP both of which are UV and heat resistant.

ARE CORE DRIVE INSTALLATIONS EAST TO MAINTAIN

Yes!

While you do not have the rutting and aggregate migration of traditional gravel installations, you still need to occasionally rake the gravel.

If you can see the Core Drive structure, you should rake the gravel to completely cover the honeycomb, thus preventing damage.

CAN CORE DRIVE BE USED ON DRIVEWAYS THAT ARE ON A SLOPE

Yes!

Core Drive grids can be used on driveways that have up to a 20% gradient, which is equivalent to an 11-degree angle or a 1 in 5 fall.

If you are planning to use Core Drive on an area that has a steep gradient (15-20%) and it is likely that your vehicle will come to a complete stop whilst still on the gradient it would be prudent to install ‘traction strips’ to allow your vehicle to accelerate on the slope without wheel-spinning and damaging the Core Drive grid.

IS THERE A SUGGESTED SPEED LIMIT FOR CORE DRIVE GRIDS

In theory there is no suggested speed limit. However if you were to break sharply the friction caused by the skidding vehicle would be similar to that of a wheel-spinning vehicle. This could potentially damage the Core Drive grid.  For this reason we would advise a maximum speed limit of 5mph.

IS CORE DRIVE EASY TO INSTALL

Yes!

We have a unique interlocking system and all of our grids come with a non-woven geotextile weed membrane heat-welded to the underside. Please take a quick look at our install video to see how easy it really is.

WHAT TYPE OF GRAVEL SHOULD I USE

For best results we recommend using an angular aggregate as this helps the surface dressing to stay in place.

Your finished Core Drive will consist of hundreds if not thousands of small cells full of loose aggregate. This unique design prevents the aggregate from shifting or over compacting, allowing the surface dressing of aggregate used to cover the cells and bite into the loose aggregate contained in the cellular structure, greatly reducing the amount of movement in the finished surface.

IS CORE DRIVE SUDS COMPLIANT

YesSUDS

Our products are one of the best Sustainable Urban Drainage Solutions available.

A SUDS compliant subbase build up should contain nothing smaller than 2mm in its construction, this is referred to as a  ‘no fines’ or ‘reduced fines’ build up. By using a reduced fines subbase material such as type 3 or 4-40mm clean aggregate, below a grit bedding layer, the water is able to infiltrate through the complete build up and back into the subsoil.

Whilst all of our grids are completely porous and can therefore form a SUDS  surface course, the free moving loose aggregate  layers required to form a truly SUDS compliant surface can prove difficult to compact adequately to provide a sufficiently stable subbase.

Our CORE Commercial grid is ideal for projects where a truly SUDS compliant surface build up is required. The perforated HDPE base provides maximum stability whilst allowing the water to flow freely through the surface course.

The moulded ground spikes improve the structural integrity by anchoring the grids into the aggregate bedding layer, the perforated HDPE base forms a structural layer between the aggregate bed and the aggregate within the grid forming the wearing course.

IS CORE DRIVE SUITABLE FOR WHEELCHAIR USERS (DDA COMPLIANT)

With regard to local government approval of our system there is no such document or set standard in the UK with reference to disabled access, which is why we refer to the American version in our literature where we have obtained U.S. approval.

In the UK Governments approved document, part M “access to and use of buildings” it states that the surface of an approach available to a wheelchair user should be firm enough to support the weight of the user and his or her wheelchair and smooth enough to permit easy maneuver. It should also take account of the needs of stick and crutch users.

Loose laid materials such as gravel and shingle are considered unsuitable for the approach. However we have proven through video footage and case study that loose aggregate laid in a CORE Drive or CORE Path stabiliser is sufficiently stable to allow safe passage for all of the above named users.

 

WILL WEEDS GROW THROUGH THE GRAVEL

No.

The geotextile membrane material that is heat welded to the bottom of Core Drive prevents weed growth from underneath the grid. You may however experience a few air born weeds that are caused by birds dropping seeds or natural pollination; these can be easily removed due to the fact they are restricted to rooting in a single cell full of loose gravel.

RETROFIT INSTALLATION

CORE-Drive-Installation-Retro-Guide

NEW DRIVE INSTALLATION

CORE-Drive-Installation-Guide

HOW TO CALCULATE YOUR SUBBASE DEPTH

CORE-Drive-Installation-Subbase

NEED HELP / ADVICE OR WANT A QUOTE?

0800 118 2278