driveway setback from retaining wall

Discussion in 'Hardscaping' started by ppl, Mar 15, 2009.

  1. ppl

    ppl LawnSite Member
    Messages: 82

    Looking for a rule of thumb for setback for a driveway from retaining wall. The wall block has not been chosen or engineered and gc does not want to engineer the wall. It is four foot height and 105 long with a setback of four feet. The live load of vehicles moving around is scary to me, I am looking not to make an expensive mistake. Looking for guidance
  2. AllHardscaping

    AllHardscaping LawnSite Member
    Messages: 77

    Driveways can be built right up to the retaining wall if everything is engineered and constructed properly. Check out NCMA for standards on the design and construction. You'll get details on how often to place geogrid etc...

    I went through the NCMA certified segmental wall installer class. I learned a ton from it. I would recomend it to anyone installing walls whether their 2 feet high or 20.
  3. ford550

    ford550 LawnSite Member
    from PA
    Messages: 221

    Absolutely. All of my guys are NCMA cert as well. It's easy to see why some of the walls look the way they do after you take this class.
  4. rholt9

    rholt9 LawnSite Member
    Messages: 18

    If I remember correctly, it is recommended that the wall be 3ft back from vehicular traffic. But I agree with the others, get NCMA cert. and there is a wealth of info for applications such as this.
  5. ppl

    ppl LawnSite Member
    Messages: 82

    Went to their site and did some looking around, found no spec. about this maybe I missed it. Everything that I read was general info. and they recommended to have the wall engineered. I will look again or even call them later.
  6. btammo

    btammo LawnSite Member
    Messages: 98

    I dont think they tell you how to build a wall on their website. You gotta take the course to find that out.
  7. ford550

    ford550 LawnSite Member
    from PA
    Messages: 221

    One of the townships here makes landscapers and even homeowners get a permit to put up any retaining wall over 12" and you have to have a design and you have to have it stamped by an engineer or no permit. Lots of fines if you don't. It is absolutely crazy. Another way for gov't to get our money.
  8. Bru75

    Bru75 LawnSite Senior Member
    Messages: 582

    12"????? They're NUTS!
    Might not look good, but you could stack 12" of block on top of the ground and be ok!

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