|
|
Introduction
| Measurement
| FAS
& FAS One Face (Selects)
No.1
Common & No.2A Common | Additional
Guidance | Summary
Summary of US hardwood lumber grades
| |
FAS
|
FAS 1 FACE
|
SELECTS
|
No.1 Common
|
No.2 & B Common
|
|
Minimum Board size
|
6"x8'
|
Same as FAS for species being graded
|
4"x6'
|
3"x4'
|
3"x4'
|
|
Minimum Cutting Size
|
4"x5'
3"x7'
|
Best of face of board
must be grade FAS
Poor face of board
must be grade No1 Common
|
4"x2'
3 "x3'
|
3"x2'
|
|
Minimum Yield
|
Surface measure x 10 83 1/3%
|
Surface measure x 8 66 2/3%
|
Surface measure x 6 50%
|
|
Formula to Determine Number of Clear Cuttings
|
(Surface measure)/4
|
(Surface measure+1)/3
|
(Surface measure)/2
|
Notes:
- This chart summarises the main requirements for the standard
grades. For complete information, consult the appropriate section
of the NHLA Rule Book.
- For kiln dried lumber, 1/2" shrinkage
is permitted for the minimum size board in each grade.
- No. 2A Common requires clear cuttings.
- No. 2B Common is a utility grade requiring cuttings to be sound.
- When specified for export shipment, a comparison can be made
respectively between export grades of PRIME and COMSEL
with the NHLA grades of FAS and No. 1 Common. It is necessary
to consult with your supplier as to the exact specification being
applied to these export grades.
|
