help with calculation

Discussion in 'Landscape Architecture and Design' started by FIREMAN Q, May 31, 2008.

  1. FIREMAN Q

    FIREMAN Q LawnSite Senior Member
    Posts: 260

    I am working on an estimate for leveling off a backyard and need some help.

    The area is 135w x 90L and it will need to be brought up about 18" over the 90' at the end of the grade. I was also planning on putting 3-4" of topsoil on top of the fill. I just can't seem to figure out a firm number for the fill. Any help would be great. thanks :drinkup:
     
  2. Summit L & D

    Summit L & D LawnSite Senior Member
    Posts: 269

    length x width x depth (in inches) / 324 = total cubic yards

    Now how much do you need to charge to put it down? You have to answer this question by knowing how much it cost you to do business and what type of work you want to represent.

    Hope this helps.
     
  3. FIREMAN Q

    FIREMAN Q LawnSite Senior Member
    Posts: 260

    thank you. I am hung up on this because of the taper. I visualize it as a triangle of sorts. Starting at 1" and ending up at 18". Its not going to be
    18" through out the entire length. Is this going to change the cubic feet?
     
  4. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,527

    yes , go with 60% of total from prior amount.
     
  5. Isobel

    Isobel LawnSite Senior Member
    Posts: 548

    approximately 340 cubic feet is what I came up with, just for fill.

    ((1.5' x 90')/2 [that's your triangle]) * 135' = cubic feet

    cubic feet/27 = cubic yds
     
  6. FIREMAN Q

    FIREMAN Q LawnSite Senior Member
    Posts: 260

    thanks for the help:drinkup::drinkup:
     
  7. JNyz

    JNyz LawnSite Bronze Member
    Posts: 1,086

    Don't forget the compaction factor.
     
  8. FIREMAN Q

    FIREMAN Q LawnSite Senior Member
    Posts: 260

    what should I expect for compaction?
     
  9. FIREMAN Q

    FIREMAN Q LawnSite Senior Member
    Posts: 260


    is that 340 yards?
     
  10. Isobel

    Isobel LawnSite Senior Member
    Posts: 548

    yes.
    sorry.
     

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