6"x8'

Same as FAS for species being graded

4"x6'

3"x4'

3"x4'

3"x4'

3"x4'

Pith =
SM in Inches
Wane =
1/2 Length
Knot =
1/3 SM
Warp =
Entire board must be flat enough to S2S to SST

Splits:
Not to exceed 2xSM or 12", whichever is greater.
Splits shall not diverge 1" in 12".

First Lineal Foot Rule:
Applies to both ends of Board, to contain not over 25% unsound wood.

Wane in FAS/FACE
FAS limitation applies to better face.
#1 Com. side:
1/3W x 1/2L
Wides Wane added together
Length can be on both edges

4"x5'
3"x7'

Better Face to Grade FAS


Poor Face to Grade #1 Com.

4"x2'
3"x3'

3"x2'

3"x2'
3"x7'

Not less than 1 1/2" wide containing 36 sq. inches

SMx10
83 1/3%

SMx8
66 2/3%

SMx6
50%

SMx4
33 1/3%

SMx3
25%

Wane in Selects
Pcs 6" and wider:
FAS limitation applies to better face.
#1 Com. side:
1/3W x 1/2L
Wides Wane added together
Length can be on both edges

SM/4

(4 max.)

(SM+1)/3

(5 max.)

SM/2

(7 max.)

Unlimited

Unlimited sound cuttings

6 - 15' SM

3 - 10' SM

2 - 7' SM

 

 

SMx11
91 2/3%

SMx9
75%

SMx8
66 2/3%

 

 

97% Rule - 2 cuts full width any length; Pcs 6" & wider with 6-12' SM
SMx11.64 for Yield

97% Rule - On better face

2'-3' SM to be 100% clear or SMx11 in one cutting on Better Face.
97% Rule

1' SM - 100%
2' SM-SMx9

1' SM-SMx8
#2a Com.-
Clear Face Cuttings
#2b Com.-
Sound Cuttings

#2a Com. on Better Face & reverse side of cuttings sound; will also qualify for #3a Com.

 

NOTE: This chart summarizes the main requirements for the standard grades. For complete information, consult the appropriate section of the NHLA Rule Book.