Douglas Fir Lumber Properties

Douglas fir larch select structural 1 500 1 000 180 625 1 700 1 900 000 wclib no.

Douglas fir lumber properties.

Engineering properties structural lumber douglas fir larch hem fir spruce pine fir. Machine stress rated msr and machine evaluated mel lumber grading of lumber in north america. Maximum floor joist span no. The tree itself grows to be very large and yields a large amount of usable lumber and veneer for plywood.

Modulus of elasticity of wood wood engineering design data. Lumber weights weights of green kiln dried and pressure treated lumber boards. Except as otherwise noted the values are computed in accordance with astm standards based on clear wood tests or on tests of full size pieces in specific grades. Civil engineering and design engineering material properties.

As we know douglas fir wood is the perfect wood for wooden work. Related lumber wood engineering data. Douglas fir timber properties. Douglas fir is the type of fir most favored by builders of residential and small commercial buildings industrial and multi level structures and bridges.

1 1 000 675 180 625 1 500 1 700 000. Properties the wood of the douglas fir is medium weight and in comparison to other coniferous woods fairly hard. Properties of lumber products by roland hernandez and david w. It is strong and elastic.

Stress graded structural lumber is produced under two systems. Good strength and practicality. Central city surrey photo credit. Lumber design values design values provided herein are for western softwood species manufactured and shipped by mills in the 12 contiguous western states and alaska.

It is subject to low shrinkage and has good stability. The following table is structural lumber wood engineering properties. Excellent screw and nail holding. Douglas fir is technically not a true fir abies genus but is in its own genus.

Having the right amount of moisture. 2 grade of douglas fir and maximum span floor joists imperial units. Visual grading and machine. Elastic ratios for various wood species at approximately 12 moisture content see bottom of webpage.

The machine is easy to work with douglas fir wood. Properties of lumber products 6 121. 1 and better 2 4 thick 1 200 800 180 625 1 550 1 800 000 wwpa no. Engineering properties of visually graded structural lumber douglas fir larch hem fir spruce pine fir.

Coastal douglas fir is a much bigger tree than the interior species and it is generally lighter in colour with a more uniform texture. Curving grows well on this wood. Modulus of elasticity also referred to as tensile modulus or young s modulus. This wood native to the pacific.