Raised patio excavation?

Discussion in 'Hardscaping' started by CNYScapes, May 6, 2006.

  1. CNYScapes

    CNYScapes LawnSite Senior Member
    Posts: 916

    I am starting a raised patio next week. Do I need to excavate any of the ground? or can I just start pouring down the gravel and compacting it?
     
  2. tylermckee

    tylermckee LawnSite Member
    from wa
    Posts: 248

    need more info, whats the soil like?
     
  3. CNYScapes

    CNYScapes LawnSite Senior Member
    Posts: 916

    little bit of clay, not too much sand
     
  4. Pavers Plus

    Pavers Plus LawnSite Member
    Posts: 83

    you need to excavate out all organic matter (topsoil, grass, etc...). probably will need to excavate out atleast 2-3", maybe more depending on conditions. If you are putting a wall in to raise up the patio, you should consider excavating atleast 10" for the footer.
     
  5. CNYScapes

    CNYScapes LawnSite Senior Member
    Posts: 916

    YA, I know I have to dig out for the wall, I am just wondering about the patio part. If it will be raised about 8" high, do I even need to take out the grass? Why cant i just start on top of the grass?
     
  6. mrusk

    mrusk LawnSite Gold Member
    Posts: 3,260

    How in the world did you price this out if you have no idea how much excavation or how much stone fill you will need?
     
  7. kris

    kris LawnSite Bronze Member
    from nowhere
    Posts: 1,578

    You won't be able to get proper compaction.
     
  8. Drafto

    Drafto LawnSite Senior Member
    Posts: 442

    This project is at your house and not for a client..........right?

    Dan
     
  9. tylermckee

    tylermckee LawnSite Member
    from wa
    Posts: 248

    Organic matter in soil will break down and rot, and your patio will settle. If it is a newer home there is a good chance that a lot of the soil around the house is fill, and ALL of the soil 3-4' out from the house is fill. At the very least you should remove the sod and run a big jumping jack type compactor over it.
     
  10. GreenMonster

    GreenMonster LawnSite Silver Member
    from NH
    Posts: 2,702

    my thoughts exactly

    please take out all organic matter. As others said, it will break down over time, resulting in a wavy or sunken patio
     

Share This Page