Measurements Final Flashcards
(37 cards)
Definition of bolts
Pieces cut shorter than 8 feet
Definition of scaling
The process of measuring volumes of individual lengths
Common units of volume
Cubic feet, cords, board feet, and weight
Coed dimensions
rick-4’x4’x8’ widthxheightxlength/128ft^3
Composition of wood volume
Wood fiber, bark, open space
Factors affecting value of stacked wood
Species, method of piling, diameter of sticks, length of sticks, straightness, freedom from knots, bark
How much solid wood volume does hardwoods contain.
79ft3
How much solid wood volume does soft woods contain
72ft3
Advantages of wood volume by weight
Weight scaling is not objective than cord wood scaling, wood yard inventions are more easily maintained because of greater uniformity
Factors to worthy scale logs
Weight per cord for a particular species and moisture content and specific gravity
Calculation of wood density
Specific gravity x 62.4 (1+(%moisture/100)
Calculate cubic foot volume of cylinder?
.005454D^2xL
Hubers formula
B1/2xL
Smalians formula
(B+b)/2 xL
Newtons formula
(b+4B1/2+B) /6 xL
Definition of log rule
A table or formula showing estimated volumes for various log diameters
Log scaling
Is the process of applying log rules and involves determining log dimensions and making allowances for defects
Board foot calculations
Thickness x width x length/12
Mill tally
Direct measure of dawn lumber
Type of log rules?
Scribner, Doyle, and international
Scribner formula
.8(d-1)^2-(d/2)
Doyle formula
(D-4)^2
International formula
.8(d-1)^2
Which log rule incorporate deductions die to slabs, saw kerf, edgings, and shrinkage?
International