Golf Course Materials Calculators
Estimate Green Area
The area of shapes that are similar to a circle but not perfectly round can be estimated by taking several measurements from the approximate center of the shape, computing the mean of measurements, and using that mean as the radius.
The more measurements taken, the more accurate the estimate is. Measurements every 10° around the center will yield 36 observations, and a very reliable estimate. This can be accomplished by using a steel tape and and 3' x 3' board with straight lines radiating from the center every 10 degrees.
Longhand, the equation is: Mean Radii = (the sum of radii) / (the sum of measurements taken) and Area = 3.14 x (Mean Radii x Mean Radii)
Estimate Material Tonnage
The formula for estimating how much sand, gravel or greensmix you'll need is:
- Area in square feet x desired depth in feet = Cubic Feet
- Cubic feet divided by 27 = Cubic Yards
- Cubic yards x 1.35 = Tons
- Tons x (100% + percentage needed for waste) = tons required
An extra 10% of mix is usually added for waste and error in measuring.
