Visually, western red cedar is favoured for its rich and inviting colours. Cedar produced by the Western Red Cedar Lumber Association includes specialty end use grades as well as products graded to National Lumber Grading Authority (NLGA) rules. Only a couple of species of Cedrus exist in the world, but they exhibit certain traits that make them very popular. rȋ8��/�Jy Cedrus libani Loud. (Special publication, ISSN 0824-2119 ; no. FOREST SERVICE . 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. Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus. 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. Clear, Vertical Grain – This is the highest grade of Western Red Cedar. Western red cedar was employed medicinally by a number of native North American Indian tribes, who used it to treat a wide range of complaints. The essential oil of red cedar is toxic. The results showed that all of the species investigated can produce structural timber, but that western red cedar has the least desirable properties for this purpose. 1. An infusion of the leaves has been used in the treatment of stomach pains and diarrhoea. 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 … 0000002672 00000 n 0000000716 00000 n Here is an overview of the characteristics that determine the grades of Western Red Cedar: Clear Western Red Cedar. 0000002737 00000 n Acoustic properties. Cedar trees fall under the Cedrus genus and the Pinaceae family, which is the family of treesthat is coniferous. Comparative oven-dry densities of cedar and some other softwood species are given in Table 1. What lies beneath a tree is just as important -- if not more so -- than what grows above. 0000005160 00000 n Medicinal and Other Uses for the Western Red Cedar. Of all available softwood species, cedar tends to be one of the best thermal insulators. )6f���e��F�y:��lݳ�_�WU�Q���4�:d,��֭� [W����%���١`1�� ���5.�L� �������)!qM sCf�^�;��(��Ӂ��c����_�Q���3E�����V�q���' WQ�Y��q~OL���A�Օ%���e In addition to interior and exterior trim, as well as exterior cladding, Western Red Cedar of this grade is also used for cabinetry, doors, windows and similar applications. Smoke developed classifications reflect the amount of smoke released by burning material. Cedrus atlantica Manetti produces Atlantic or Atlas cedar, a native of Algeria and Morocco. Western Red Cedar has flame and smoke development ratings that are higher than most in its class. 0000001473 00000 n C. libanotica Loud. Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). British grown western red cedar generally has similar properties to material imported from North America. Western hemlock is increasing in the esteem of lumbermen. The only notable difference is the natural durability which is rated as moderately durable (imported material is classified as durable). What Western Red Cedar lacks in strength, it makes up for in appearance. The smoke developed index for Western Red Cedar is 125. Flame spreading ratings describe the surface burning characteristics of interior finishes. Natural resistance to deterioration has long made Western Red Cedar the premier choice for either interior or exterior home use. Distribution. Cedar is a type of coniferous wood, meaning that it is classified as a softwood and its cones/needles remain all year round. It is non-resinous and has a strong spicy scent. Aromatic Red Cedar glues and finishes well, though in many applications, the wood is left unfinished to preserve its aromatic properties. The structural grades of Yellow Cedar are ideal for uses where strength and/or natural durability are important. Characteristic values of mechanical properties and density were determined and indicative yields for different strength classes were calculated. Modulus of Elasticity of Wood, Wood Engineering Design Data. Demonstrate Western Red Cedar’s versatility as a building material through three case studies 0000011118 00000 n 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. Western Red Cedar Beams Full dimension beams. 4 knots per 12’ of board is allowable. 0000018317 00000 n Douglas Fir, Ponderosa Pine, White Fir and Western Red Cedar are the most common single species sold as dimension lumber products. Cypress is one of the most versatile timbers available for use in exterior applications. Includes bibliographical references. 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. Austin Wholesale Decking Supply 10900 N Lamar Blvd., Austin, TX 78753 Phone: 512/834-1200 Cypress is one of the most versatile timbers available for use in exterior applications. Due to its soft properties, Western Red Cedar takes to machining very well, and it both screws and nails with good result. Click here to request a quote - we offer VERY competitive pricing! Building codes in North America generally define as interior finish any exposed material that forms part of the building interior. changeable in that they share performance properties and are similar in appearance. Very few materials can be reused like this from decommissioned structures, whereas composite materials go straight to landfill. The Western Red Cedar contains a extremely strong compound called trienolone, which is one of the reasons the wood takes so very long to decompose on the forest floor. I. Western Red Cedar is ideal for projects that require stability, natural durability and easy to work with, such as: Outdoor landscape elements:decks, planters, fences, screens, garden furniture and sheds; or exterior siding, roof tiles, interior wall and ceiling panelling, doors and windows, and a variety of joinery items. TS/RS ratio: Stability: Crushing strength *: Mean Std dev. 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 This is an important characteristic since good thermal insulators help keep buildings cool in the summer and reduce heating costs in the winter. Shrinkage in both the radial and tangential directions is given in Table 3 (in the Product Selection tab). For many people in the US this is what comes to mind when the word cedar is … It is found as a tree or shrub. Western Red Cedar especially is superior to steel, concrete, and brick in this respect. These lovely deep green trees give off a fragrance that is just simply inspiring, I’d have to say. The appealing dark colour, light weight and soft texture makes … The cost of logging western hemlock is ordinarily high as com- In dry wood, these cavities are filled with air which is one of the best known thermal insulators. Design values provided for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska. 0000004778 00000 n 15% is the average equilibrium moisture content of wood during the summer in the Pacific Northwest. Nails and screws used to fasten Western Red Cedar should 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. Medium-to-fine texture. Of all available softwood species, cedar tends to be one of the best thermal insulators. ¬ The open cell structure of the timber is able to absorb and dissipate sound energy. 0000001705 00000 n A decoction of the leaves has been used in the treatment of colds. Detailed product information is available from the Western Red Cedar Lumber Association. ACOUSTIC PROPERTIES ¬ Western Red Cedar reduces or confines noise when used on walls and ceilings. There are few more versatile building materials than Western Red Cedar which is ideal both for indoor and outdoor uses. Western Red Cedar’s open cellular structure helps to absorb and dissipate sound energy, making it effective in confining noise. The simple cell structure of softwoods’ long, uniformly packed fibers gives them a high strength-to-weight ratio, making them flexible and capable of bearing heavy loads. Customers who choose western red cedar are reducing their material consumption versus other building materials. American softwoods have the strength […] The conduction of heat in wood is directly related to its density. 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. The size differential between dry and unseasoned Western Red Cedar is given in Table 2 (in the Product Selection tab). Characteristics & Properties of Western Red Cedar, characteristics-properties-of-western-red-cedar. British grown western red cedar generally has similar properties to material imported from North America. Not listed in CITES. Static bending strength *: Modulus of elasticity *: (*: at 12% moisture content, with 1 MPa = 1 N/mm²) % % % % MPa MPa MPa Note: WESTERN RED CEDAR wood tends to split. 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. White pine will last a very long time if properly cared for. US codes set the maximum smoke developed classification for interior wall and ceiling finishes in most buildings at 450. Cedar and pine are two common options used for many building projects, both of which have a variety of subspecies scattered around the world. Floor, ceiling and wall assemblies of wood can provide effective economical sound insulation and absorption when properly utilized. Dimensionally stable, it takes paint, stains or varnishes easily. Cedar Sales offers a range of ceiling and wall designs that are engineer-approved to meet various acoustic ratings. It's stronger than Western red or Eastern white, but you're never going to find any large enough for rafters. DENSITY. This is due to its high proportion of air spaces and its low density. 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