Export R-List Grades
No. 2 Clear & BTR
Douglas Fir
Each piece shall be sound timber, well manufactured. Three irregularities are permitted on face side, four on reverse side, including corresponding half of edges, for each
lineal 3.7 m, based on 203 mm widths; and shall average at least
6 rings of annual growth to 25 mm on either one end or the other.
Knots are permitted on the reverse face only. In 127 mm and thicker stock, an occasional piece 5.5 m
or longer may have one larger irregularity showing in one or two surfaces if so placed that by cutting it out, the shortest cutting will be
2.4 m or longer, providing the balance of piece is practically free from other irregularities. Limit of waste, 305 mm.
Example 1 is virtually free of
irregularities on the face.
Only one small pitch pocket shows in
Example 2.
Example 3 shows allowable irregularities for the reverse face. It contains one pin knot, one small knot and one very small pitch streak (as would be permitted on the face of No. 3 Clear). |
No. 4 Clear
Douglas Fir
No. 4 Clear is a grade recommended and widely used where general
utility purposes are of more importance than appearance. Each piece shall be well manufactured and
will permit one or more irregularities which are of such size or number that it is not of
No. 3 Clear grade. Unless otherwise specified, irregularities in the reverse face can be slightly in excess of those allowed on the face. Grade descriptions are based on a piece 203 mm wide and 3.7 m in length. In all thicknesses, occasional pieces in shipment may have a 102 mm cutout 1.2 m or
more from either end in pieces 3.7 m or longer.
Example 1 contains six knots
ranging from 10 to 25 mm.
Example 2 has three knots with
the maximum size of 25 mm, three knots 19 mm, several pin knots and a very small pitch pocket.
Example 3 contains five knots
ranging from10 to 19 mm, and medium heart stain. |
51mm x 254 & 305 mm No. 1 Merchantable
Douglas Fir
Each piece shall be well manufactured and suitable for good substantial purposes, must be medium grain and will permit sound and tight knots ranging from approximately
38 mm in 102 mm widths to 76 mm in 305 mm widths, proportionate in wider widths.
Sound and tight knots up to 68 mm are contained in
Example 1 with sapwood less than one half the area.
Example 2 contains sapwood
including blue stain less than one half the area with sound and tight knots up to 64 mm.
Example 3 has sound and tight
knots, with the largest knot 64 mm, and allowable wane on one end. |
