Through strategic partnerships in South America, North America, Africa and Asia, Incomatti is capable to offer more than 15.000m3 monthly of wood logs of several species, such as:
Jatoba, Cumaru, Wamara, Teak, Eucalyptus, Wallaba, azobe, Okume, Tali, Padouk, Kempas, merbau, iroko, Sapeli, Cabreúva, oak, birch, beech, larch, black walnut, mapple and many other species.
Generally two different systems are used for the measurement of logs:
1) Method geometric scaling Smalian obtained by the equation:
Equation used (adapted from Smalian):
VPEÇA = ((D1 + D2 + D4 + D5) / 4) 2.L.0, 00007854
In which:
d1 = diameter of the lower base of the log in inches
d2 = Diameter greater the base of the log in inches
d4 = diameter smaller than the top of the log in cm
d5 = Diameter greater than the top of the log in inches
L = length in meters of the log
0.00007854 = Constant (π/40000)
2) Hoppus Formula (usually Teak)
Formula
The Hoppus foot formula uses the midquartergirth (M.Q.G.) in inches, squared, then multiplied by the length in feet and then divided by 144 to give H.ft. The girth is measured in inches at the midpoint between the butt and the tip and then divided by 4 to get the M.Q.G.
The following calculation can be used to estimate the usable timber in round logs
Hoppus Volume (hft) = (Mid Quarter Girth in ins.)^2 X Length (ft) / 144
Quarter Girth tapes are available, with 66' tapes for the length, and readyreckoner tables.
Conversion
One hoppus foot = 1.273 true cu.ft; 27.736 h ft = 1 cu.m; and 1 h ft = 0.036054 cu.m. A hoppus foot is approximately 21% bigger than a true cubic foot.
In Myanmar 1 Hoppus ton = 50 Hoppus cubic feet = 1.8027 cu.m.
For more on Hoppus and its use in the Teak trade see:
http://gwydir.demon.co.uk/jo/units/volume.htm
http://www.myanmarwood.com/measure.shtml
http://en.wikipedia.org/wiki/Hoppus
See the following for a comprehensive description of timber measurement systems
http://www.ruraltech.org/projects/conversions/
briggs_conversions/briggs_ch02/Chapter02_
combined.pdf
