Standard grades
FAS (First And Second)	- Minimum of 40% of wood exempt of defects and sapwood - The pieces must have good texture - Tolerance of 3% of pieces having interwoven grain - On pieces of less than 1 m2 one standard defect is admitted: a knot of 16 to 32 mm -- pin holes, inse
No 1 Common and Select	- Defects and sound sapwood admitted up to 20% of the piece's width - Some grain and texture variations admitted - 1 standard defect on a piece of less than 0,6 m2 - 2 standard defects on a piece between 0,6 m2 and 1 m2 - 3 standard defects on
No 2 Common	- Sound sapwood tolerated without limits - Slight blue stains tolerated - Small dead pin holes, isolated or grouped, not exceeding 1/2 of the piece's surface, are tolerated in 10% of the batch maximum - Abnormal grain is tolerated as long as it d

Special Grades
Prime	- Must have at least 80% exempt of defects and sapwood - Sound sapwood not exceeding 5% of the piece's width is tolerated - Tolerance to defects is same as on the preceding grades - The grade must be of excellent texture and exempt of abnormal gr
FAS Shorts	- In specifications over 15 cm of width, pieces 20 cm or more wide may present one defect - In specifications over 7,5 cm of width, pieces 15 cm or more wide may present one defect
Prime Strips	- One clear side - The opposite side and a third of its thickness over adjacent edges may present one defect per 1,20 m
Selected Constructional Grade	- Well sawn pieces to contractual dimensions, without excessive presence of sapwood, worm holes, distorted knots, rotten heart, or shakes that could affect the resistance of the piece and its durability - Wane is permitted on sections of 390 cm2 and mo

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