Whats the proper base for an asphalt driveway?

Discussion in 'Hardscaping' started by Right Touch, Jun 18, 2009.

  1. Right Touch

    Right Touch LawnSite Senior Member
    Posts: 382

    We are doing a retaining wall project where we are extending the existing driveway. The home owner wants to do asphalt for now (hopefully pavers down the line) so we are just going to install the base for the driveway behind our retaining wall. Generally we backfill retaining wall with 3/4" clean stone. Would we do the same in this situation? and how many inches below the existing driveway should we leave the final height? the first picture is the back end we are extending- its about 14x16 and the second picture is the left side- thats about 3-4' wider than the existing driveway.

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  2. Right Touch

    Right Touch LawnSite Senior Member
    Posts: 382

    woops loaded the pics opposite- you guys can figure it out. the faint orange marks are the proposed new driveway marked by the homeowner prior to our meeting.
     
  3. Top Dog Pavers

    Top Dog Pavers LawnSite Member
    Posts: 65

    excavate to 6". 4" RCA base & 2" asphalt
     
  4. Bru75

    Bru75 LawnSite Senior Member
    Posts: 585

    Who's doing the pavement? I'd start by talking to them, good asphalt contractors are VERY picky about the base. They might want to install the base themselves as you build the wall.
     
  5. Isobel

    Isobel LawnSite Senior Member
    Posts: 548

    I also would find out who's doing the asphalt and talk to them first. I know from experience I wouldn't want someone else laying a base to any work I'm doing.
     
  6. JDeere

    JDeere LawnSite Member
    from OR
    Posts: 20

    Let your contractor handle this.

    Generally speaking, 6" to 8" of compacted aggregate (3/4" with fines). Heavier base rock is probably not needed for your subdivision application.
     

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