|
|
|
Technical
Section |
(Page 3 of 6) |
|
 |
|
|
|
Example
of how to determine Hardwood Lumber Grades |
|
One Board Of Ash |
|
Applying NHLA
Grading Rules |
|
|
12' long |
|
Cutting No. 1:
6" x 7' = 42 units |
|
12"
Wide |
|
Cutting No. 3:
6" x 6-2/3' = 40 units |
 |
Cutting No. 2:
6" x 6-1/2' = 39 units |
|
|
|
1 |
SPECIES: ASH |
|
2 |
SURFACE MEASURE: 12" X
12' = 12' Foot Surface Measure |
|
3 |
NUMBER OF CUTTING UNITS (FOOT
LONG HOTDOGS) IN ENTIRE BOARD:
12" X 12' = 144 CUTTING UNITS |
|
4 |
ESTABLISH A TRIAL GRADE:
FAS 1 FACE & BETTER |
|
5 |
MINIMUM SIZE CUTTINGS FOR THE
FAS 1 FACE & BETTER GRADE:
4" x 5' AND/OR 3" x 7" (The above illustration meets these
minimums). |
|
6 |
DETERMINE THE CLEAR FACE
CUTTINGS REQUIRED:
Surface Measure times 10 or 12' x 10 = 120 Cutting Units
(Foot Long Hotdogs) required for FAS 1 FACE GRADE. |
|
7 |
DETERMINE TOTAL AREA OF REQUIRED
CLEAR FACE CUTTINGS FOR THE FAS 1 FACE GREAD: |
|
|
| Cutting #1 |
6" x 7'
|
= |
42 Cutting
Units |
|
Notice how much clear, useable wood is not considered
for grading purposes |
|
| Cutting #2 |
6" x 6-1/2' |
= |
39 Cutting
Units |
|
Cutting #3 |
6" x 6-2/3' |
= |
40 Cutting Units |
|
|
Total
|
= |
121 Cutting Unit |
|
|
|
|
|
NOTE: This grading face is FAS. The
required cutting units are 120 and the board yields 121
cutting units (Foot Long Hotdogs). The grade of
this board is FAS 1 Face and Better if the "poor face"
(Back Side) will yield 96 cutting units (Surface Measure
times 8) for the #1 Common back grade. |
|
|
|
|
|
| |
America's Forest are
Plentiful |
|
|
Hardwoods are the broad-leafed trees
that lose their leaves each autumn, like oak, maple, cherry and
ash. How are these forest doing today? |
|
 |
America's Forest |
|
 |
Hardwoods are most often used to make fine furniture, kitchen
cabinets, flooring, paneling, high-quality paper and firewood.
They are also used to make guitars, pianos, baseball bats, hockey
sticks, bowling pins and hundreds of other useful item. |
|
|
Hardwoods grow 55% more each year than are harvested, lost to
fire, insects and disease combined. |
|
|
There is
twice as much hardwood saw timber today than in 1952. |
|
|
|
|
