SUMMARY OF PERMISSIBLE CHARACTERISTICS FOR SEASONED WA HARDWOODS
CHARACTERISTICS PRIME GRADE STANDARD GRADE
GRADED ON BEST FACE/TWO (2) EDGES GRADED ON ALL FOUR (4) SURFACES
BORER HOLES (Clean Edged) Permitted provided not exceeding 5mm in dia. and not more than two (2) within any 0.9 metre of length. Permitted provided not exceeding 12mm in dia. and not more than two (2) within any 0.9 metre of length.
BORER CANALS Not permitted Permitted provided not exceeding 12mm in width by 50mm in length and not more than one (1) within any 0.9 metre of length.
PIN HOLES Permitted provided not exceeding 2mm in dia., isolated and not more than six (6) within any 0.9 metre of length. Permitted provided not exceeding 3mm in dia. and not more than ten (10) within any 0.9 metre of length.
KNOTS Permitted provided sound and intergrown, not exceeding 25% of the width of the surface on which they occur with associated voids not exceeding 5mm in dia. and not more than one (1) within any 0.9 metre of length. Permitted provided sound and intergrown not exceeding 1/3rd of the width of the surface on which they occur with associated voids not exceeding 12mm in dia. and not more than three (3) within any 0.9 metre of length.
KNOT HOLES Not permitted
Permitted provided not exceeding 12mm in dia. and not more than two (2) within any 0.9 metre of length.
GUM VEINS – TIGHT (Bridged with Wood Fibre) Permitted provided not exceeding 2mm in width and individually and in aggregate not exceeding 400mm In any 0.9 metre of length. No limitations.
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GUM VEINS – LOOSE Not permitted Permitted provided not exceeding 3mm in width, confined to one surface only and Individually and in aggregate not exceeding 400mm within any 0.9 metre of length. .
GUM POCKETS Not permitted. Permitted provided not exceeding 10mm in width by 150mm in length, not intersecting an end and not more than one (1) within any 0.9 metre of length.
GUM STREAKS, SMEARS, SPLASHES Permitted provided not exceeding 2mm in depth and in area not to exceed 50mm x 25mm or equivalent. Permitted provided bridged with wood fibre and sound.
OVERGROWTHS OF INJURY AND KNOT OCCLUSIONS Permitted provided sound and intergrown, not exceeding 25% of the width of the surface on which they occur with associated voids not exceeding 5mm in dia. and not more than one (1) within any 0.9 metre of length. Permitted provided sound and intergrown not exceeding 1/3rd of the width of the surface on which they occur. With associated voids not exceeding 12mm in dia. and -not more than three (3) within any 0.9 metre of length.
 BIRDSEYES
(Epicormics)
Singular and/or in clusters permitted provided individual openings do not exceed 1.5mm in width and do not extend beyond 50% of the length of the characteristic. No limitations.
WANT AND WANE Permitted provided able to be removed by final machining to industry dimensions. Permitted provided not exceeding 25mm measured across the bevel of one (1) arris and In aggregate not exceeding 1/3rd of the length of the piece.
SURFACE SEASONING CHECKS Fine, hairline checks permitted provided individually not exceeding 75mm in length and in aggregate not exceeding 10% of the length of the piece. Permitted provided individually not exceeding 2mm In width by 200mm in length.
COMBINATION OF CHARACTERISTICS Permitted provided a combination of not more than two (2) characteristics and not more than one (1) combination with any 0.9 metre of length. Permitted provided a combination of not more than three (3) characteristics of maximum permissible size within any 0.9 metre of length.
SAPWOOD (Non-Susceptible) No limitations. No limitations.
BLACK SPECK,
SPOTS, FLECK.
No limitations. No limitations.
BURLS, FEATURE GRAINS No limitations. No limitations.
NATURAL COLOUR VARIATIONS/STAINS Permitted provided not associated with decay. Permitted provided not associated with decay.
SLOPE OF GRAIN Not limited for the purpose of this grade, however for structural applications refer to AS 2082-1979 Not limited for the purpose of this grade, however for structural applications refer ‘to AS 2082-1979
CUPPING/TWIST Permitted provided able to be removed by final machining to industry dimensions. Permitted provided able to be removed by final machining to Industry dimensions.
BOW/SPRING Permitted provided able to meet permissible allowances within milled product specifications. . Permitted provided able to meet permissible allowances within milled product specifications.

In addition to the non-permissible characteristics listed in the abovementioned Summary the following imperfections shall not be permitted in the Individual grades of Prime and Standard:

a. #Compression failures other fractures
b. #Falling or cross shakes
c. #Heart and associated shakes
d. #End splits within the ordered length
e. #Internal seasoning checks
f. #Loose unsound and defective knots
g. #Included bark
h. #Decay
i. #Termite galleries