Depth Key Code Inches = Value 1" = 12.00 2" = 6.00 3" = 4.00 4" = 3.00 5" = 2.40 6" = 2.00 7" = 1.71 8" = 1.50 9" = 1.33 10" = 1.20 11" = 1.09 12" = 1.00 13" = 0.92 14" = 0.86 15" = 0.80 16" = 0.75 17" = 0.71 18" = 0.67 19" = 0.63 20" = 0.60 21" = 0.57 22" = 0.55 23" = 0.52 24" = 0.50

To Calculate Yardage needed for your project enter the Width of Circle, the Width of Border, and Depth.

Note: you must enter your Depth Key Code Value into the "Circular Border Calculator" for Correct Calculation.

Example: there is a Circular shaped pool 20 feet wide diameter the owner wants to put in a 2 foot wide border (or walkway) of stone around the pool and would like it to be 3 inches deep (see Depth Key Code).

 Example Width of Circle x 20 Width of Border x 2 Depth Key Code Value x 4

NOTE: Your Values are to be entered into the Calculator as "Feet" Not Inches.

# Circular Border Calculator

Width of Circle:    Feet (or Diameter)
Width of Border:    Feet (Width of Walkway)
Depth:    Value (from Depth Key Code)

Cubic Yards
If use of a Gravel or Fill Product is needed, also calculate for Compaction.

Compaction (Appox 20% for Gravel)