Straight-grained sawing, free from all deteriorations or sawing defect on all four faces.
Straight-grained sawing, free from all deteriorations or sawing defect except for 20% of parts which can have one intergrown sound knot of 10 mm maximum diameter, or its equivalent, per linear meter on one face or one edge. If a piece is smaller than 1 m the entire piece will be accepted.
Tolerance on each face of two intergrown sound knots of 12 mm maximum diameter, or its equivalent, per linear meter.
Presence on each face of small knots without limitation, and of a maximum of three sound knots per linear meter, maximum diameter not to exceed one third of the width of the timber or 25 mm or equivalent.
Presence on each face of small knots without limitation, and of a maximum of three sound knots per linear meter, maximum diameter not to exceed one half of the width of the timber or 40 mm or equivalent.
QUALITY GRADES WITH SAPWOOD ON ONE FACE
The sawn timber has the same quality characteristics as the grades without sapwood. The sapwood must not exceed two thirds of the edges.
The presence of sapwood in a grade is indicated by the letter X.
The grades are as follows: Q-F AX, Q-F 1aX, Q-F 1bX, Q-F2X, Q-F 3X.
Not acceptable: wane
QUALITY GRADES WITH SAPWOOD ON TWO FACES
Sapwood can occur on all faces except in grade Q-FA.
This is indicated by the two letters XX at the end of the classification.