Under Classification: GRADE 0 - GRADE 1 - GRADE 2 - GRADE 3


TIMBER FEATURES GRADE 4

KNOTS ON THE FACES
Knots - sound intergrown Unlimited where the solidity

and / or the use of the piece is not

compromised.
Knots - dead or partially intergrown
Knots - encased
Knots - loose or unsound
Number of knots (on the worst linear metre for knots)
...loose or unsound
...spike and splay

KNOTS ON THE EDGES: G4
Knots sound Unlimited where the solidity

and / or the use of the piece is not

compromised.
Knots - dead or partially intergrown
Knots - bark ringed loose or unsound
Number of knots (on the worst linear metre for knots)
...loose or unsound

OTHER FEATURES OF THE STRUCTURE
Bark ringed Unlimited where the solidity and / or the use of the
piece is not compromised.
Resin pocket
Compression wood max.: 30 % of the surface
Abnormal slope of grain permitted