Fasteners should be corrosion resistant such as aluminum, hot-dipped galvanized or stainless steel. Western red cedar. Twenty years ago the species was considered as having practically no value. Choosing the right type of wood for your project requires a little background knowledge of the traits of different woods. Environmental. Cedar Sales offers a range of ceiling and wall designs that are engineer-approved to meet various acoustic ratings. Medium-to-fine texture. What Western Red Cedar lacks in strength, it makes up for in appearance. information provided by the Western Red Cedar Lumber Association . 0000002446 00000 n Cedrus atlantica Manetti produces Atlantic or Atlas cedar, a native of Algeria and Morocco. Forest Products Laboratory, Forest Service … Wood has a cellular network of minute interlocking pores which converts sound energy into heat by frictional and viscoelastic resistance. The flame spread rating for Western Red Cedar is 45 (Class B rating). Western Red Cedar is particularly effective in this regard and can be used to help reduce noise or to confine it to certain areas. Believed available from well-managed sources. Very few materials can be reused like this from decommissioned structures, whereas composite materials go straight to landfill. 2. Review specification options of Western Red Cedar, including lumber and appearance grades, as well as compatible fastener selection. 6% is the average equilibrium moisture content for interiors of heated buildings. When used as exterior cladding, Western Red Cedar keeps buildings cooler in summer, while cutting heating costs in winter. Western or Pacific redcedar, giant or western arborvitae, giant cedar, canoe cedar, shinglewood, is an evergreen coniferous tree in the cypress family Cupressaceae, native to Western North America. American softwoods have the strength […] 4 knots per 12’ of board is allowable. For structural applications, Western species readily combine into six Species Groups, shown below. 8" x 8" x 20' (240") = $300 each - Qty 1 2" x 12" x 18' (216") = $125 each - Qty 1 - clear grain Mechanical Properties of Clear Straight-Grained Wood 4–26 Natural Characteristics Affecting Mechanical Properties 4–27 Specific Gravity 4–27 ... Cedar, western red 0.055 0.081 0.087 0.086 0.005 Douglas-fir 0.050 0.068 0.064 0.078 0.007 Fir, subalpine 0.039 0.102 0.070 0.058 0.006 Alternate Combinations are available in non-structural grades. Detailed product information is available from the Western Red Cedar Lumber Association. The essential oil of red cedar is toxic. One of the lightest commercial softwoods, the density of Western Red Cedar at oven-dry conditions is approximately 21 pounds per cubic foot with a relative density (specific gravity) of 0.32. Shrinkage does not begin until the fiber saturation point is reached. Check certification status with suppliers. Our access to a diverse and unique species mix coupled with our unparalleled investment in manufacturing supports us in meeting our customers’ need for a consistent and reliable supply of quality products. Smoke developed classifications reflect the amount of smoke released by burning material. ¬ The open cell structure of the timber is able to absorb and dissipate sound energy. Add to the fact the specie is highly durable, and the result is both a pergola with a ‘wow’ factor, plus years of sheltered entertaining. Battens and Screens (Special publication, ISSN 0824-2119 ; no. 0000004778 00000 n This usually includes interior wall and ceiling finishes, flooring, windows, doors and other wood products. Floor, ceiling and wall assemblies of wood can provide effective economical sound insulation and absorption when properly utilized. Western Red Cedar Harmful Properties May cause respiratory problems Western Red Cedar Interlocked Grain No Western Red Cedar Kiln-dried Shrinkage Low Western Red Cedar Machine Tools Average Western Red Cedar Mortising Good Western Red Cedar Movement after drying Low Western Red Cedar … Growth, properties and uses of western red cedar (Thuja plicata Donn ex D. Don)/by Josefi na S. Gonzalez. 0000001920 00000 n Span Tables Spans for Western Red Cedar dimension lumber used as joists and rafters in residential and commercial structures are available from the Western Red Cedar Lumber Association, the Canadian Wood Council and the National Association of Home Builders. Only a couple of species of Cedrus exist in the world, but they exhibit certain traits that make them very popular. In dry wood, these cavities are filled with air which is one of the best known thermal insulators. Douglas Fir, Ponderosa Pine, White Fir and Western Red Cedar are the most common single species sold as dimension lumber products. Characteristics & Properties of Western Red Cedar, characteristics-properties-of-western-red-cedar. Western Red Cedar has flame and smoke development ratings that are higher than most in its class. Cedar trees fall under the Cedrus genus and the Pinaceae family, which is the family of treesthat is coniferous. Cedar is a type of coniferous wood, meaning that it is classified as a softwood and its cones/needles remain all year round. This results in reduced energy usage and contributes towards a higher Green Star building rating. Due to its soft properties, Western Red Cedar takes to machining very well, and it both screws and nails with good result. 0000001686 00000 n The following table is Structural Lumber Wood Engineering Properties. Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). It has a coefficient of thermal conductivity (k value) at 12% mc of 0.74 BTU inch/ft2h degrees F. The R value (the reciprocal of k) for Western Red Cedar is 1.35″ (34mm) of thickness. Their properties are similar to savin juniper. Western Red Cedar is used to manufacture a range of specialty products such as siding, paneling, structural decking and outdoor decking. Grain: Generally straight or spiralled. Cedar's low density enhances its insulation value and makes it an easy wood to transport and handle. 0000005160 00000 n ... are ASTM Standards D 2555 and D 245 for clear wood-based properties, and D 1990 for full-size test specimens. US codes set the maximum flame spread rating for interior wall and ceiling finishes in most buildings at 200. 0000001705 00000 n Western Red Cedar is frequently the material of choice for pure Decorative trusses, but should be checked thoroughly if intended for use in Structural applications. Physical & Mechanical Properties A coarse-textured softwood, weighing 376 kg per cubic metre, with a close, uniform, straight grain and an extreme resistance to decay. Values of mechanical properties and uses of Western Red Cedar is … Get this from a pale brown to! Generally a few inches longer than the listed length aromatic properties to a pinkish color has. Group 3 material in order to understand its durable and sustainable properties … ] Western Cedar. Cedar glues and finishes well, and can be reclaimed from other projects and.. Highest grade of Western Red Cedar, a native of the best thermal insulators most in its.! 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