Basic value of trunk size
Basic value of trunk size
Large trees
The other key part of this formula is a dollar amount which is plugged-in to represent the basic value by using the tree's girth. On large trees this figure is usually expressed as the number of "cross sectional square inches."
To find the cross sectional area of a tree trunk, use the same formula you used in high school math class to find the area of a circle:
3.14 times Radius squared (pr²)
Trunk diameter on large trees is measured at "breast height" which is4-1/2 feet above the ground, and is more commonly referred to asDBH or Diameter Breast Height. To find the diameter of a tree, wrap a cloth tape measure or piece of string around the tree, and divide that length by 3.14.
Once you have the diameter, you can divide that length by 2 to find the radius.
Radius = ½ Diameter AND Diameter = Radius times 2
The other key part of this formula is a dollar amount which is plugged-in to represent the basic value by using the tree's girth. On large trees this figure is usually expressed as the number of "cross sectional square inches."
To find the cross sectional area of a tree trunk, use the same formula you used in high school math class to find the area of a circle:
3.14 times Radius squared (pr²)
Trunk diameter on large trees is measured at "breast height" which is4-1/2 feet above the ground, and is more commonly referred to asDBH or Diameter Breast Height. To find the diameter of a tree, wrap a cloth tape measure or piece of string around the tree, and divide that length by 3.14.
Once you have the diameter, you can divide that length by 2 to find the radius.
Radius = ½ Diameter AND Diameter = Radius times 2
from:
http://www.treeboss.net/trees_have_value.htm
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