Bob
Seems like I've seen that number recently...coincidence, no doubt?
Don
Sent from Don's iPhone 3GS...
On Jan 8, 2010, at 1:45 PM, [email protected] wrote:
Don,
I am finally getting to a question you previously asked about the
projection of the full height of a tree from a section starting near
the base. If we assume a uniform rate of taper and we have a section
to use to project the full height, the following formula will do it.
L = diameter of lower (large) end of log
U = diameter of upper (small) end of log
h = length of log
b = length from L to base of tree
T = total projected tree height
T = [ h/(L-U)]U+ h + b
Example.
L = 5
U = 2
h = 100
b = 3
T = [100/(5-2)]2 + 100 + 3 = 169.6 ft
Remember that this formula assumes a uniform rate of taper. If the
tree increases its rate of taper above the log, which would be true
for old growth forms that have a paraboloid form from about 5 feet
up to where the limb structure takes over, then the rate of taper
can change dramatically.
Bob
