Douglas Fir Lumber Grades
Douglas fir s light rosy color is set off by its remarkably straight and handsome grain pattern.
Douglas fir lumber grades. Grading is by visual inspection and is a judgment of appearance and suitability to end use rather than of strength. Douglas fir is technically not a true fir abies genus but is in its own genus. The country clinic the clinic was built by jerry laverty and laverty construction a longtime customer. Home species douglas fir select grade douglas fir lumber of this grade is intended primarely for use in housing and light construction where it is exposed as paneling shelving and other uses where a knotty type of lumber with the finest appearance is required.
All pictures are meant for a general grade description. Douglas fir it is very strong and is less prone to warping and spitting than syp. The lumber grades in this category are intended for applications where strength is not the primary consideration. Western wood products association 1500 sw first ave.
Standard grading guides for northeastern lumber. Hem fir western. It is an incredibly valuable commercial timber widely used in construction and building purposes. Predominant material found in western u s.
Interpreting a grade stamp. 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. The 5 grades of eastern white pine grade photo sheet hem fir.
Eastern white pine northeastern lumber manufacturers association. Heartwood is russet with high contrast between the springwood and summerwood. Potter mountaintop home a combination of douglas fir larch and western red cedar give this home a timeless western charm. Limitations of the nhla grading system.
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. Home species douglas fir select structural grade douglas fir select structural posts and timbers are graded primarily for strength but can be used also for good appearance. It encompasses a group of western species. Products graded for appearance.
An overview of lumber grades and wood quality. The wood siding shown in this picture is select tight knot channel that was also. General definitions and instructions for grading eastern white pine boards. Before we get into the different grades of lumber let s take a look at the various defects you may find in a piece of lumber.
Hem fir it is weaker and more prone to warping and splitting than douglas fir but more receptive to preservation. Sapwood is white to pale yellow. These depend on various factors like the type of wood used and the number and types of defects if any. Potter commissioned the recycled beams from an old barn in eastern wa.