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  1. #1
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default paving advice sought - WA

    hi,

    nearly every paving guide talks about putting compacted roadbase under the pavers as a sub base, then about 30mm of sand as bedding... but some don't specify the gravel/ roadbase layer - they simply opt for compacted subsoil, and then a bedding layer.
    So here I am digging out the crappy grey sand which passes for soil in my part of WA and I've come across the compacted yellow brickies sand I paid to have put in as part of the pad prep. This is 300mm thick, and compacted with one of those BIG industrial compactors (weighs about 1T) - the sand would pass for weak limestone, or weak concrete.
    it seems silly to dig this out and replace it with roadbase and then recompact it... especially since my compactor is only one of those smaller domestic types which weigh around 50-60 kg.

    does anyone know what i should be doing here...
    where the compacted yellow sand has not been done (the last meter of the proposed paving) I've dug down 300mm and will either fill with roadbase, or compact brickies sand in 50mm lifts up to the level of the bedding sand.
    The bedding sand will be the proper 30mm thick screeded layer as per every guide i've read.

    Thanks,
    Des

  2. #2
    Join Date
    Aug 2000
    Location
    Perth
    Posts
    34

    Default

    Crappy grey sand in the Pilbara, I thought the grey stuff was only down in Perth and it was all red up there ?

    I guess the biggest question is what is going on top of the paving, is it your driveway and is it going to have vehicles going up and down it or sitting on it all the time? If the yellow sand is as consolidated as you say then I think you will probably get away with it.

  3. #3
    Join Date
    May 2010
    Location
    Perth
    Posts
    135

    Default

    It is in perth... Need to update profile.
    The paved area will occasionally have vehicles drive on it.

  4. #4
    Join Date
    Sep 2007
    Location
    Country West Oz
    Age
    77
    Posts
    169

    Default

    Years ago when I lived in Perth, I did paving on compacted yellow sand as you describe, occasional vehicle traffic, but mostly foot traffic, did not have any problem with it at all.
    Regards
    Bradford

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