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Driveway

Discussion in 'General DIY' started by Munroist, 20 Jul 2019.

  1. Munroist

    Munroist

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    I am going to widen the entrance to the driveway, which you can see by the picture I got started the day by digging out the area it is going to be extended into.

    The plan: Form a new edge just in from the grass, dig completely out the old edge, fill with hardcore, compact down and then relay the new paviour blocks on a bed of sharp sand.

    My Questions; How long after I lay the new edge on/in concrete can I add the hardcre and compact down? I know its sort of dam-shaped but I don't want the compacter to break it. Is a week enough?

    Also, the old edge, if I just break off the top of the edging leaving the concrete below (it will be close to the underneath of the blocks) will it be obvious what I have done? or would I be best digging all the concrete out and have an even sub-base throughout ?

    driveway0484.JPG
     
  2. Ian H

    Ian H

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    A week is plenty. If you leave the concrete in and the rest settles a bit then the new bit above it may sit proud of the rest.
     
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  3. Munroist

    Munroist

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    As it turns out the concrete holding up the original edge was fairly soft (must of been 8:1 / 10:1) , soon broke it up with a little micky mouse 2kg SDS

    By the time I get round to back filling with hardcore and getting a whacker the concrete on the new edge will of had a few weeks, and with the turf relaid I'm guessing it should be strong enough

    When I back fill with hardcore, what sort of gap should I allow for for the sharp sand - (what depth of sharp sand should these blocks sit in? looks like they have used about an inch on whats there)) is that about right?

    driveway0562.JPG
     
    Last edited: 4 Aug 2019
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  4. Ian H

    Ian H

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    Not more than 50mm of sand (y)

    If you can match the existing that would be ideal.
     
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