Lawn Terracing

Discussion in 'Lawns' started by hilldweller, Sep 12, 2008.

  1. hilldweller

    hilldweller Apprentice Gardener

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    Hi,

    Our garden is built into a hillside, and as such we have two terraced lawns which only go back around 2.5m. What I'd like to do is to move soil from the top terrace onto the lower terrace (raising it) so that I can have one big lawn instead. I realise that I will have a big mud pit and will have to grow some more grass when I'm done.

    I guess this is doable (despite being a lot of work :D) but do I need to lay anything onto the bottom lawn terrace before I start depositing earth onto it?

    We have steps leading up to the first terrace so I'm planning on building a small retaining wall there to prevent the whole thing sliding down the hill when I've finished.

    Any comments, warnings, or advice would be greatly appreciated.

    Regards

    John the Hilldweller
     
  2. Flinty

    Flinty Gardener

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    Hi John

    Your plan sounds very strenuous! What's the difference in levels between the two terraces at present?
     
  3. Pro Gard

    Pro Gard Gardener

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    Id sugest spraying off the old lawn with roundup 2 weeks prior to starting soil moving. This will kill off any weeds and allow you a fresh start when you seed.
     
  4. JWK

    JWK Gardener Staff Member

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    Hello John & welcome to GC.

    Heres some problems you might face:
    How much soil depth and what is the amount you need to rais it up by. If you only have a few inches of soil depth then you might end up with just the subsoil/natural stone or whatever is below the surface on the upper level, so not good for grass.

    If the retaining wall is high you might need to make it substantial (and maybe even have it designed by an engineer and/or have council approved).

    You will also need a wall at the top level I guess.

    Hopefully these aren't big issues.

    Good luck and keep us posted.
     
  5. Pro Gard

    Pro Gard Gardener

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    "If the retaining wall is high you might need to make it substantial (and maybe even have it designed by an engineer and/or have council approved)."

    Definately if Over 1m high
     
  6. Little Miss Road Rage

    Little Miss Road Rage Gardener

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    Sounds like a lot of work. Have u got any pics of what it looks like?
     
  7. hilldweller

    hilldweller Apprentice Gardener

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    Yep it's a mental amount of work, but I need to clear a nice square area for our little kids to play on and we can't afford a landscaper, so... I guess it'll have to be a long term project. :)

    The higher terrace is just under 1.5m high, so I'd be looking to s****e a max of 75cm off the top and chuck it down over the top of the lower terrace. Unfortunately, the terrace with the soil to be moved is approx 7m wide and 2.5m deep.

    What concerns me slightly is what to do about the boundaries with our neighbours, as I don't want to cause a slide on their side around the periphery of their lawns!

    I'll get some photos taken and upload, as I think it will definitely show the situation more clearly.
     
  8. JWK

    JWK Gardener Staff Member

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    As a quick calc I think you will be moving some 17 cubic metres of soil, which would be around 34 tonnes - That would be like 3 of those big 6 yard skips to visulaise it.

    One thing to remember is that soil bulks up when you dig it out. It mixes with air so that it become 30 to 40% bigger in volume.

    I think you might have a problem with the top area - if you take off 75cm you might have no soil left to grow grass on - if you had to scr@pe the sub-soil off and then throw some soil back on that will make more work.


    You would have to build little walls to against your boundaries to stop their gardens caving in, a temp solution could be paving slabs on end or maybe old railway sleepers for a quick permanet fix.

    I'm not trying to put you off, its certainly do-able if you give yourself enough time, especially as you could probably throw the soil off the top straight into position (so not lots of weheelbarrowing). I've done this sort of thing myself and it can be done if you take your time. :)
     
  9. Little Miss Road Rage

    Little Miss Road Rage Gardener

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    lol don't think your neighbours would thank u for making their gardens collapse
     
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