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Nieghbors new retaining wall collapsed.

Discussion in 'Hardscaping' started by jimmyzlc, Dec 28, 2008.

  1. packey

    packey LawnSite Senior Member
    Posts: 556

    the only place I use drainage stone is directly around the drain. I use the concrete sand beyond that point. so instead of filling the whole back of the wall with drainage stone I utilize the concrete sand. I have personally found it to be more stable and yet it still drains well
  2. jimmyzlc

    jimmyzlc LawnSite Senior Member
    Posts: 376

    I'll try and get a few more pics up. The blocks they used where from Lowe's.
  3. AztlanLC

    AztlanLC LawnSite Bronze Member
    Posts: 1,035

    Well if it works for you that is fine I guess for me I wouldn't feel safe using this method since I feel overtime sand will start migrating out or clogging up the drain much faster even using geotex.
  4. loupiscopolandscaping

    loupiscopolandscaping LawnSite Senior Member
    Posts: 320

    personally i would have used a better block. like a pin system from versa lock to anchor country manor. every wall has its limits and every wall must to constructed for its peak strength
  5. btammo

    btammo LawnSite Member
    Posts: 98

    Really? I would never use sand of any type behind a wall. I have yet to see any type of sand that would drain enough for my satisfaction. I run stone all the way bottom to top surrounded by fabric.
  6. LB1234

    LB1234 LawnSite Gold Member
    Posts: 3,210

    I wouldn't even think of using sand directly behind my wall. It's very simple...place a pile of drainage stone next to a pile of sand (whichever kind) wait a week or so before a few rains hit it and then tell me which one has the higher moisture content.

    I would also think a place like colorado would have a large amount of freeze/thaw cycles and that wouldn't help the sand behind the wall issue either.

    Now that I think about it...(1) for me the drainage stone is WAAYYY cheaper than the sand and (2) to properly compact sand (correct me if I'm wrong) you'd need a jumping jack in addition to the plate compactor.

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