Linear Feet to Square Feet (To Cubic Yards)

Discussion in 'Lawn Mowing' started by stephen424, Mar 7, 2010.

  1. stephen424

    stephen424 LawnSite Senior Member
    Messages: 730

    Started a thread yesterday about going from square feet to yards....
    Was reading some other threads and alot suggested that, when measuring for a mulch job, to use a wheel.
    I've been walking the area off and "guessing" the square footage (most beds have curves, but I just walk a straight line).
    I've been pretty accurate on my mulch jobs this year. Others say a wheel is more accurate (which I believe).

    So what's the technique with using a wheel...since it measures linear feet.
    Like with a tree ring...or a bed thats shaped like a cartoon cloud.
  2. Darryl G

    Darryl G Inactive
    Messages: 9,500

    I just measure things as rectangles and triangles generally. I just pace them off, breaking them into pieces if necessary, and add them all up. You really just need to get an approximate area and try to split the mulch you have among all the areas as evenly as possible. Don't try to make more of a science of it than you need to.
  3. Armadillolawncare

    Armadillolawncare LawnSite Senior Member
    Messages: 570

    Length x width = sq. feet
    Use that formula for squares and triangles

    3.14 x radius x radius = area of circle
    Use that formula to get the area of a circle
    For example a tree ring you would measure from the middle of the circle to the edge of the circle. If that measurement is 4 feet it would look like this.
    3.14 x 4 x 4
  4. jkingrph

    jkingrph LawnSite Senior Member
    Messages: 812

    Pretty close. For triangles just estimate everything as a right triangle, that is one with one 90degree or square corner. then area for a triangle is lenght x width x 1/2 for area.

    For volume multiple area x depth, just keep units the same throughout all your calculations, feet x feet x feet. Example bed 2x4feet x 3inches deep would be 2x4x.25. (.25feet=3 inches).

    27 cubic feet in 1 cubic yard ( 3x3x3)
  5. Runner

    Runner LawnSite Fanatic
    Messages: 13,497

    And for tree rings, just look at them as a square. you go through all this, you can be all day on a place just doing an estimate for mulch. After a while, yu can just look at smaller beds and estimate the size of them. I visualize a yard stick laying down in the bed and count the lengths. Sometimes, you will pace them out. Pacing is MUCH faster than a wheel, and pretty much just as accurate after you've trained yoursel to properly pace distance. Always know that a yd of mulch just a hair under 100 sq. ft. at 3" deep.
  6. jr_golf

    jr_golf LawnSite Member
    Messages: 18

    If you need the volume of a cylinder. It is
    3.14 x radius x radius x height (of depth of mulch)
    EX. 3.14 x 4 x 4 x .25 (.25 being the depth of mulch in feet. .25 being 3 inches.)

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