SUMMARY OF HARDWOOD FACE GRADE CHARACTERISTICS
FLAT CUT

Red Oak and White Oak (See pictures)

Cut

Plain-Sliced (Flat-Cut), Quarter Cut, Rift Cut

Grade Description

AA

A

B

Colour and Matching

Red Oak

White Oak

Red Oak

White Oak

Red Oak

White Oak

Sapwood

No

No

No

No

5%

Yes

Heartwood

Yes

Yes

Yes

Yes

Yes

Yes

Colour Streaks or Spots

Yes

Yes

Yes

Colour Variation

Slight

Slight

Yes

Sharp Colour Contrasts at Joints

No

No

No

Type of Matching

Sequence Matched

Book Matched

Slip Matched

Pleasing Matched

Yes

Yes

Specify

---

No

Yes

Specify

---

No

Yes

Specify

Yes

Nominal Minimum Width of Components in Face

6"

5"

4" If book or slip

Natural Characteristics

Small Inconspicuous Burls & Pin

Knots - Combined Avg. No.

1 per 4 sq. ft.

8 per 4'x8' panel

1 per 2 2/3 sq. ft.

8 per 4'x8' panel

1 per 1 1/3 sq. ft.

24 per 4'x8' panel

Burls - Max Size

1/4"

3/8"

1/2"

Knots Max. Size

Dark Part

Total

 

 

1/4"

 

1/8"

1/4"

 

1/8"

1/4"

Scattered Sound and Repaired

Knots - Combined Avg. No.

Max. Size - Sound

Max. Size - Repaired

Avg. No. - Repaired

No

No

 

1 per 8 sq ft.

4 per 4'x8' panel

3/8"

1/8"

1 per 8 sq. ft.

Mineral Streaks

No

Slight, Blending

Few to 8"

Bark Pockets

No

No

Few to 1/8"x1"

Worm Tracks

No

No

Slight

Vine Marks

No

Slight

Yes

Cross Bars

Slight

Slight

Yes

Manufacturing Characteristics

Rough Cut

No

No

Slight

Blended Repaired Tapering Hairline Splits

Two 1/32"x3" on
panel ends only

Two 1/16"x6"

Four 1/8"x8"

Repairs

Very small inconspic.

Small, inconspicuous

Inconspicuous

Special Characteristics

Ray Fleck

No

Slight, Blending

Slight, Blending

Rift and Comb Grain

Rift permits 1" in 12" max. grain slope, 2 1/2" in 12" max. grain sweep, occasional flake not to exceed 3/8" in width.

Comb permits 1/2" in 12" max. grain slope, 1/2" in 12" max. grain sweep, occasional flake not to exceed 3/32" in width.

Unfilled worm holes, open splits, open joints, open bark pockets, shake or doze not permitted in above grades.

One inch = 25.4 mm; one sq. ft. = 0.0929 square meters.

 

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