Douglas Fir Lumber Grade Chart

Douglas fir structural timbers are available on a special order basis.

Douglas fir lumber grade chart. Lumber manufacturer in canada produced for either the structural or the appearance market. First and most significantly the nhla grading system as its name implies is limited to domestic hardwood lumber. Knots must be sound firm encased and tight. Extreme fiber stress in bending f b psi tension parallel to grain f t horizontal shear f v compression perpendicular to grain.

Our millworks can manufacture douglas fir products for you like mouldings paneling or whatever you can dream up. Structural wood lumber engineering properties chart 2 to 4 thick 2 and wider. To the left is an example of a grade stamp with each part numbered and defined. Know about spf lumber douglas fir lumber canadian lumber s grades moisture content of structural lumber lumber grades canada.

It is an incredibly valuable commercial timber widely used in construction and building purposes. 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. 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. 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.

Know all lumber s standard grades seasoned to the consumer s needs. 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. 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. With minimal defects small knots and its bright white appearance this product is widely accepted as the premier product for modular and panelized.

Compression parallel to grain f c modulus of. 2 lumber is the most common grade for framing. 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. Douglas fir is technically not a true fir abies genus but is in its own genus.