Under Classification: GRADE 0 - GRADE 1 - GRADE 2 - GRADE 4

TIMBER FEATURES GRADE 3 KNOTS ON THE FACES Knots - sound intergrown max.: 10 % of the width of the piece + 50 mm Knots - dead or partially intergrown max.: 10 % of the width of the piece + 50 mm Knots - encased max.: 10 % of the width of the piece + 50 mm Knots - loose or unsound max.: 10 % of the width of the piece + 50 mm Number of knots (on the worst linear metre for knots) unlimited ...loose or unsound 5 knots max. ...spike and splay unlimited KNOTS ON THE EDGES: G4 Knots sound max.: 100 % of the thickness of the piece max.: max. permitted on the face Knots - dead or partially intergrown max.: 100 % of the thickness of the piece max.: max. permitted on the face Knots - bark ringed loose or unsound max.: 90 % of the thickness of the piece max.: max. permitted on the face Number of knots (on the worst linear metre for knots) unlimited ...loose or unsound 3 knots max. OTHER FEATURES OF THE STRUCTURE Bark ringed max. number: 4 on the worst linear metre total length 300 mm Resin pocket max. number: 4 on the worst linear metre total length 300 mm Compression wood max.: 50 % of the surface Abnormal slope of grain permitted