Douglas Fir Lumber Grade Chart

The tree itself grows to be very large and yields a large amount of usable lumber and veneer for plywood. First and most significantly the nhla grading system as its name implies is limited to domestic hardwood lumber. Know all lumber s standard grades seasoned to the consumer s needs.

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Lumber manufacturer in canada produced for either the structural or the appearance market.

Douglas fir lumber grade chart.

Douglas fir structural timbers are available on a special order basis. Structural wood lumber engineering properties chart 2 to 4 thick 2 and wider. 4 square j grade produced in our spf mills located in alberta and southern british columbia our clean and bright spf 4 square j grade lumber sets the standard for north american lumber. To the left is an example of a grade stamp with each part numbered and defined.

With minimal defects small knots and its bright white appearance this product is widely accepted as the premier product for modular and panelized. Our millworks can manufacture douglas fir products for you like mouldings paneling or whatever you can dream up. Lumber of this grade contains few defects but knots are allowed of any quality as long as they are well spaced and do not exceed the size regulations. As one of the most common species in american forests douglas fir is strong and straight grained with its tight know pattern premium douglas fir is a beautiful wood to use exposed.

Construction grade lumber is used for light framing. Compression parallel to grain f c modulus of. Extreme fiber stress in bending f b psi tension parallel to grain f t horizontal shear f v compression perpendicular to grain. Knots must be sound firm encased and tight.

2 lumber is the most common grade for framing. That means of course that it does not encompass exotic hardwood species such as ipe or mahogany or softwood species such as red cedar or douglas fir. Lumber grading construction lumber in order to help you determine what lumber you need for a specific building project and what grade you are receiving a grade stamp is placed directly on the softwood lumber that includes information about the lumber s grade moisture content species and other characteristics. We carry a wide range of rough sawn sizes in typical 4 4 and 8 4 lumber and supply it kiln dried or radio frequency kiln dried for a 100 dry large timber.

J w lumber specializes in rough douglas fir from small 2 2 s to 12 12 timbers and larger available in lengths exceeding 30 feet. It is an incredibly valuable commercial timber widely used in construction and building purposes. Douglas fir is technically not a true fir abies genus but is in its own genus. Know about spf lumber douglas fir lumber canadian lumber s grades moisture content of structural lumber lumber grades canada.

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