CALCULATIONS
L = length " = inches
W = width ' = feet or foot
SQ = square feet or foot / = per
LBS = pounds x = times
T = tons 3.14 = Pi
CY = cubic yard
Y = yard
CF = cubic feet or foot
Circumference of Circle = around the outside Diameter of Circle = across the whole circle Radius of Circle = across half of circle
Ground Cover = Any granular material - sand, river rock, crushed decorative rock.
The very first step to YOUR PROJECT is to MEASURE the area you want to cover. MEASURE - DO NOT GUESS. We know you may have some odd shaped areas, measure the best that you can.
Area of a
is L in ft x W in ft = Sq Ft
Area of a
is L in ft x W in ft divided by 2 = Sq Ft
Area of an
is (1/2 of L) x (1/2 of W) x 3.14 = Sq Ft
Area of a
is (radius x radius) x 3.14 = Sq Ft example 18' across = 254.34 Sq Ft.
Figure Circumference using Radius - radius x 2 = diameter x 3.14 = circumference
Figure Radius using Circumference - 3.14 x 2 = 6.28 then circumference divided by 6.28 = radius in feet
Volume of Circular hole in ground - radius x radius x 3.14 = Sq Ft. Sq ft x depth in feet = Cf then divide by 27 Cf = CY
1 y (not cubic) = 3' (36")
1 sq y - 3' x 3' = 9 sq ft 1 cy - 3' x 3' x 3' cube = 27 cf
inches x inches divided by 144" = sq ft
COVERAGES
MULCH - 1 cy = 150 sq ft 2" deep 1 cy is one scoop on our skidloader and we can deliver a maximum of 12 cy in our largest truck. Reference - bagged mulch is typically 2 cf/bag so a cy would be 13 1/2 bags.
DIRT - 1 CY = 125 sq ft 2" deep If compacting, you will LOSE 30% of the volume. A cubic yard weighs approximately 1.3 ton depending on moisture content. 1 cy is one scoop on our skid loader and we can deliver a maximum of 9 cy in our largest truck.
GROUND COVER (Heavy Weight) with varying sizes of 1/2" - 2" - 1 tn = 100 sq ft 2" deep (minimum coverage) should figure for 3" deep. On this, there is a little over 1 1/2 tn in a cy. A cy of rock is 2 scoops on our skid loader. One skid loader bucket is about 3/4 ton. Our largest truck can carry 7 tn.
GROUND COVER (Heavy Weight) with varying sizes of 2" - 4" - 1 tn = 75 sq ft @ 3" deep (consider this a layer) (minimum coverage) should figure for another half layer. Our largest truck can carry 7 tn.
GROUND COVER (Light Weight) - 1 tn = 220 sq ft 2" deep, should figure for 3" deep. Our largest truck can carry 5 tn.
SAND & LIMESTONE SCREENINGS (non compacted) - .84 tn = 100 sq ft 2" deep. If you have cf then take cf divided by 27 cf = cy then x 1.4 for sand or 1.5 for limestone = tns.
FLAGSTONE (1 1/2" - 2" thick) - 1 tn covers between 100 - 150 sq ft with an approximate 1" gap. The thinner it is the more it covers. Thinner pieces may not be appropriate for walking on unless appropriately set in concrete.
MISSOURI LIMESTONE WALL BLOCK - approximately 2 ton per cubic yard. L in ft x W in ft x H in ft = cft then divide by 27 cft = cy. Take cy x 4,000 = lbs OR cy x 2,000 = tons.
BOULDERS - We suggest measuring the area that you want to put it in including height that you want, as they will not look the same size at your home as it does in our yard. The chart below is not all inclusive in sizing but gives an approximation.
BOULDER SIZING
This Chart is based on a PERFECT SPHERICAL SHAPE.
Boulders are not perfect spheres - for example a boulder might measure 21.60" one way and 15.60 " the other two ways, using the chart above you would know it would weigh somewhere between 200 lbs & 500 lbs.