| HELPFUL FORMULAS |
| | | | | | | | |
| To find # of cubic yards (CY) required for an area at different material depths: |
| 1. Calculate square footage of area,
Length X Width - Square Footage
2. Determine depth desired and divide by appropriate number in the chart below |
|
| 1" Deep: Sq. Ft. ÷ 324 = ~ Cubic Yards needed | 2" Deep: Sq. Ft. ÷ 162
= ~ Cubic Yards needed | |
| 3" Deep: Sq. Ft. ÷ 108 = ~ Cubic Yards needed | 4" Deep: Sq. Ft. ÷ 81 = ~ Cubic Yards
needed | |
| 5" Deep: Sq. Ft. ÷ 67 = ~ Cubic Yards needed | 6" Deep: Sq. Ft. ÷ 54
= ~ Cubic Yards needed | |
| 8" Deep: Sq. Ft. ÷ 40 = ~ Cubic Yards
needed | 12"
Deep: Sq. Ft. ÷ 27 = ~ Cubic Yards needed | |
| | | | | | | | |
| Approximate Coverage of Bagged Mulches and Landscape Rock | |
| 2 Cubic Foot Bag | 3 Cubic Foot Bag | 4 Cubic
Foot Bag | |
| 24
square feet @ 1" deep | 36 square feet @ 1" deep | 48 square feet @ 1" deep | |
| 12 square feet @ 2" deep | 18 square feet @ 2" deep | 24 square feet @ 2" deep | |
| 8 square feet @ 3" deep | 12 square feet @ 3"
deep | 16
square feet @ 3" deep | |
|
6 square feet @ 4" deep | 9 square feet @ 4" deep | 12 square feet @ 4" deep | |
| | | | | | | | |
| One
Ton = 2000 Pounds & One Yard = 1.4 Tons (2800 lb.) for most bulk materials | |
| Decorative Rock, Sand, and Class 5 Material | Wood Mulch,
Black Dirt, and Concrete | |
| One Ton
will cover: | One Cubic Yard will cover: | |
| 100 Sq. Ft. @ 2" Deep | 108 Sq. Ft. @ 3" Deep | |
| 70 Sq. Ft. @ 3" Deep | 80 Sq. Ft. @ 4" Deep | |
| 50 Sq. Ft. @ 4" Deep | 65 Sq. Ft.
@ 5" Deep | |
| | 54 Sq.
Ft. @ 6" Deep | |
| | | | | | | | |
| Retaining Wall Granular Backfill | |
| Use the following formulas to determine Cubic Yards of 3/4" Limestone needed to backfill a retaining
wall. | |
| For a 12" wide trench behind wall: | For an 8" wide trench behind wall | |
| Total
Wall Square Footage ÷ 27 = Cubic Yards | Total Wall Square Footage ÷ 40 = Cubic Yards | |
| required. | required. | |
| | | | | | | | |
| Mathematical
Formulas | |
| Area
of Circle: | Area of Triangle: | |
| 3.14 x R2 (R = Radius) | B x H x .5
(B - Base; H = Height) | |
| Circumference
of Circle: | Cubic Contents of Cylinder or Pipe: | |
| D x 3.14 (D = Diameter) | Area of one end (circle) x L
(L = Length) | |
| | | | | | | | |
| General Conversions | |
| Linear | Area | |
| 1 Mile = 1760 yards = 5280 feet = 1.61 kilometers | 1 Square Mile = 640 acres (A) | |
| 1 Yard = 3 feet = .9 meters | 1 Square Acre = 4840 square yards = 43,560 Sq. Ft. | |
| 1 Foot = 12 inches = 30.4 centimeters | 1 Square Inch = 6.45 centimeters (cm) | |
| 1 Inch = 2.54 centimeters | 1 Square Yard = 9 square feet | |
| 1 Meter = 39.37 inches | 1 Square Foot = 144 square inches | |
| The above formulas are approximate coverage ratios. Exact product size
depth of coverage and use of product need to be taken into account before ordering. |
