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Sloping driveways..

I've a location where we have a front sloping driveway (i'll post the fall later) and the client is looking for solutions that do not include 'hard' paving or paviours and ideally self draining (no room for soakaway/drainage).

 

They want a 'soft' look to the driveway. Its about 3.5m wide, 15m long and slopes to the house. It's used for parking and is the only pedestrian access to front door (ie path/driveway are currently one - old tarmac over slabs laid on soil).

 

What are some alternatives and what are the practical limitations (ie what slope can gravel with stablising mats be used on, is grass over concrete mats possible etc)??

 

Help ...any ideas/experiences ?

 

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Replies

  • Hi Gary, how 'soft' is 'soft'. You mention shingle. Would your client go for a resin bound surface which could be permeable. If you use a non-permeable product is there no where you could locate some SUDS crates - you could get some vehicular strength rated ones and pop them under your drive (would have to dig deep they to allow for the slope, to get them 5m from ths house. I personally have never laid the honeycombe plastic or the concrete matts although I have provided quotes for both in the past. I personally can't stand the look of them they just remind me of overflow car parks.
  • Although resin bound has all the pourous qualities the client might require,we need to know the angle of slope?

    Because of its trowled finish,it is classified as anti-slip on level surfaces, but i would be wary on its properties especially as the drive is sloping towards the house.

  • Gary, do you have a photo. That might help to focus our attention
  • PRO

    Hi Gary

     

    What ever softer approach your client decides and which ever way the driveway falls when using the self drain system or SUDS perhaps you could advise your client of the baffle system that needs to be installed .......

    with out baffles the water will quickly collect at the lowest point of the drive and flood.......the more info you can give the more help you'll recieve

     

     

    I'll break down the baffle system in another quick drawing.......in a moment.

     

    Baffles:

     

     

    Kerry

  • PRO

    Thanks.

     

    I'm trying to download photos, along with slope angle.

     

    Client initially stated 'grass' based solution, however the drive is shaded most of the day (esp in Winter) by next doors hedge which 'increases' in height due to slope. I believe any 'grass' would not survive long term and will reduce back down to soil/mud.

     

    For the flint/shingle solution, do we look to use interlocking gravel retaining mats?

  • PRO

    Gary

     

    you could use GridForce matting.......but just remember about the gradient and where the water will flow when under the permeable surface...

     

    On a gradient with matting the grass would be too slippery

     

     

     

    Gridforce matting for loam and seed mix or gravel:

     

     

     

     

    Kerry

     

  • PRO

    Cross section of a baffle:

     

    Gary I hope this helps

     

    Kerry

  • PRO

    Gary did you find a solution for this? And I'm baffled by your baffles Mr J (what a wonderful word!) but sounds like I may need some baffles...
    I have a front garden with in/out driveway to design and concerned that at gradient of 1:6, what is the best solution to be SUDS compliant and fit for purpose. the client has his heart set on a combination of resin bound aggregate and york stone as he has seen this elsewhere (a completely flat location!). I am waiting to hear back from Sureset about their product re the gradient.
    Any thoughts/advice gratefully appreciated.

  • PRO
    Jenny,

    We ended up doing just a little of hardscaping and all the softscaping following their Extension.

    We confirmed it was possible to achieve desired drive with grids (not sure which brand we spoke to).

    In the end the builders did the driveway in tequla blocks, with a linear drain at the bottom, exiting straight into convenient brick soil chamber. Totally against regs, but was 'cheaper' than anything we could offer.

    Money overruled 1/ their initial brief, 2/ ease of solving the drainage problem (albeit illegally)

    Tactfully stepped aside once they made that decision.
  • PRO

    Cheers Gary. It would be great to know if anyone else has found good solutions for steep sloping driveways that do comply with regs...?

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