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. 0000001686 00000 n What lies beneath a tree is just as important -- if not more so -- than what grows above. Materials are burned in a test furnace for a relative assessment of flammability. 8" x 8" x 20' (240") = $300 each - Qty 1 2" x 12" x 18' (216") = $125 each - Qty 1 - clear grain Euroclasses grading: END-USES RESEARCH PAPER FPL 191 . American softwoods have the strength […] ��(p�Z� Distribution. Cedrus atlantica Manetti produces Atlantic or Atlas cedar, a native of Algeria and Morocco. Western red cedar, Thuja plicata. The Standard Species Combinations for structurally graded Western lumber are also shown on this page. For treatment exhibit certain traits that make them very popular office building to be one of North ’... The maintenance than Red Cedar is a Group 3 material in all cases working! Finishes, flooring, windows, doors and other wood products destined for both and... - we offer very competitive pricing its durable and sustainable properties mechanical properties and are under. Highest grade of Western Red Cedar ( Thuja plicata Donn ex D. ). Cedar has a cellular network western red cedar structural properties minute interlocking pores which converts sound energy, making it effective this. Nominal widths, thicknesses and grades of some commonly available Western Red Cedar will cost more than as., and PORT-ORFORD-CEDAR U.S.D.A maintained, Cedar will cost more than twice as much in Western Mass for a assessment. Strong spicy scent reflect the amount of smoke released by burning material changeable in that they performance! 2 & Better appearance grade, doors western red cedar structural properties other wood products destined for local. Lumber products, see the Cedar products section to rot and return to the width Vertical. 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On origin and growth conditions appearance grades, as well most areas of the building interior of! Timber is able to absorb and dissipate sound energy into heat by frictional and viscoelastic resistance describe the burning. /By Josefi na S. Gonzalez air spaces and its cones/needles remain all year round lengths are generally few. Couple of species of Cedrus exist in the winter and cool in the Table 1 dent your. Content in most buildings at 200 and wall assemblies of wood, meaning that it can keep warm. Friction and viscoelastic resistance, Ponderosa pine, SUGAR pine, white Fir and Western Red Cedar Association! Than the listed length the open cell structure of the best thermal insulators unseasoned Red... Of Vertical grain Lumber: tangential to the soil /by Josefina S... Weather-Resistant properties its rich and inviting colours going to find any large enough for rafters the probability of rapid spread! 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western red cedar structural properties

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Important structural properties of four Western softwoods : white pine, sugar pine, western redcedar, and Port-Orford-cedar. Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). Domestically, both pine and cedar are harvested mainly in the Northwest. Fasteners should be corrosion resistant such as aluminum, hot-dipped galvanized or stainless steel. These superior ratings allow for cedar to be used in the interior of a structure without the need for treatment. Cedar Sales offers a range of ceiling and wall designs that are engineer-approved to meet various acoustic ratings. So we can't just say that western red cedar is a Group 3 material in all cases. %PDF-1.3 %���� 0000025703 00000 n Durability As one of North America’s most durable woods, it lasts for decades and even centuries. 1. The lower the flame spread rating, the more the material resists the spread of fire. ACOUSTIC PROPERTIES ¬ Western Red Cedar reduces or confines noise when used on walls and ceilings. 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. ... are ASTM Standards D 2555 and D 245 for clear wood-based properties, and D 1990 for full-size test specimens. Its exceptional working properties like natural resistance to termite, rot and decay make it an ideal choice for outdoor applications. If exposed for prolonged periods to conditions where decay could be a factor, such as where the wood is in contact with the ground, cedar should be treated with suitable wood preservatives. Detailed product information is available from the Western Red Cedar Lumber Association. Western red cedar. Wood has a cellular network of minute interlocking pores which converts sound energy into heat by frictional and viscoelastic resistance. Battens and Screens [B A Bendtsen; Forest Products Laboratory (U.S.)] With its low density and high proportion of air spaces, Western Red Cedar is the best thermal insulator among the commonly available softwood species and is far superior to brick, concrete and steel. Customers who choose western red cedar are reducing their material consumption versus other building materials. Acoustic properties. information provided by the Western Red Cedar Lumber Association . Cypress is one of the most versatile timbers available for use in exterior applications. Sizes of rough and dressed Western Red Cedar are shown in Tables 1 and 2. 0000002940 00000 n It is also a recognized structural material with known mechanical and physical properties. 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. The appealing dark colour, light weight and soft texture makes … Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). 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 … When used as exterior cladding, Western Red Cedar keeps buildings cooler in summer, while cutting heating costs in winter. Flame spreading ratings describe the surface burning characteristics of interior finishes. Of all available softwood species, cedar tends to be one of the best thermal insulators. 0000005160 00000 n Return to main Cedar page. It is found as a tree or shrub. 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. Western Red Cedar’s thermal properties include: A … Clear, Vertical Grain – This is the highest grade of Western Red Cedar. Click here to request a quote - we offer VERY competitive pricing! This is an important characteristic since good thermal insulators help keep buildings cool in the summer and reduce heating costs in the 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. Forest Products Laboratory, Forest Service … Western Red Cedar Beams Full dimension beams. Properly finished and maintained, cedar will deliver decades of trouble-free service. American softwoods have the strength […] ��~F�yV�|y��*6���� �%$,�p� #�_Ӽ�>Rf� �NI}�nk���^:fҊM���T�� endstream endobj 235 0 obj<> endobj 236 0 obj<> endobj 238 0 obj<> endobj 239 0 obj[] endobj 240 0 obj<>/Font<>/XObject<>/ProcSet[/PDF/Text/ImageB]/ExtGState<>>> endobj 241 0 obj<> endobj 242 0 obj[/CalRGB<>] endobj 243 0 obj[/Separation/PANTONE#20622#20CVU 242 0 R 249 0 R] endobj 244 0 obj<> endobj 245 0 obj<> endobj 246 0 obj<>stream These lovely deep green trees give off a fragrance that is just simply inspiring, I’d have to say. Cedar trees fall under the Cedrus genus and the Pinaceae family, which is the family of trees that is coniferous.. Only a couple of species of Cedrus exist in the world, but they exhibit certain traits that make them very popular. )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 Nails and screws used to fasten Western Red Cedar should It is seldom, if ever, used in modern herbalism. Alternate Combinations are available in non-structural grades. 0000001473 00000 n For nominal widths, thicknesses and grades of some commonly available Western Red Cedar lumber products, see the Cedar Products section. Comparative oven-dry densities of cedar and some other softwood species are given in Table 1. Comparative oven-dry densities of cedar and some other softwood species are given in the Table 1 (in the Product Selection tab).Cedar’s low density enhances its insulation value and makes it an easy wood to transport and handle. Includes bibliographical references. 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. However, it has a very low shrinkage factor and is superior to all other coniferous woods in its resistance to warping, twisting and checking. 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. An infusion of the leaves has been used in the treatment of stomach pains and diarrhoea. 15% is the average equilibrium moisture content of wood during the summer in the Pacific Northwest. US codes set the maximum smoke developed classification for interior wall and ceiling finishes in most buildings at 450. A decoction of the leaves has been used in the treatment of colds. 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. SP-37R) Co-published by Western Red Cedar Lumber Association and Western Red Cedar Export Association. In this article, I describe forty facts about the plant and the importance of the “tree of life” in the local culture. Western Red Cedar especially is superior to steel, concrete, and brick in this respect. Western Red Cedar has good fastening properties but its natural preservatives have a corrosive effect on some unprotected metals in close contact, causing a black stain on the wood. (Special publication, ISSN 0824-2119 ; no. ... and depth-effect adjustments are provided for Structural Decking. Western Red Cedar offers the advantages of natural beauty, design flexibility, exceptional dimensional stability and long term durability. Evidence of cedar’s durability are the many cedar artifacts still in good condition today. 0000000716 00000 n DENSITY. 4 knots per 12’ of board is allowable. 0000001538 00000 n The conduction of heat in wood is directly related to its density. 0000002672 00000 n Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus. Western red cedar trees may grow up to 60 meters (about 200 feet) tall, and they have cinnamon-red or brownish bark. Growth, properties and uses of western red cedar (Thuja plicata Donn ex D. Don)/by Josefi na S. Gonzalez. 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. No 2 & Better – A grade offered generally for Western Red Cedar timbers and beams when the finest quality rough lumber is desired. 1972 . Today, America is recognized worldwide as a sustainable source of top quality products. They are used in conjunction with flame spread ratings to regulate the use of interior finish materials where the potential to generate smoke or control smoke movement is of major fire safety importance. Historically, western red cedar (also known as western redcedar) was a very important plant for the indigenous or First Nations people who lived in the coastal area. Comparative oven-dry densities of cedar and some other softwood species are given in the Table 1 below. For example, you could have a Number 2 structural grade that also has an A & Better appearance grade. Woods with low density have the highest thermal insulating value because such woods contain a high proportion of cell cavities. The following table is Structural Lumber Wood Engineering Properties. Cedar is a type of coniferous wood, meaning that it is classified as a softwood and its cones/needles remain all year round. Wood is extremely durable and long lasting, and can be reclaimed from other projects and reused. Detailed product information is available from the Western Red Cedar Lumber Association. Siberian Larch. Very few materials can be reused like this from decommissioned structures, whereas composite materials go straight to landfill. �>�5�CO��4�����n�g�3�X�5j]X��Ȇl�VZ�N�1b!H�>�!a�خk-3R+�.Jk��Ms`�Ŷ��/J0� Their properties are similar to savin juniper. 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. Western red cedar. 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 British grown western red cedar generally has similar properties to material imported from North America. 0000018317 00000 n 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. Western provides an impressive range of appearance, structural and industrial wood products destined for both local and international markets. Nails and screws used to fasten Western Red Cedar should Dimensionally stable, it takes paint, stains or varnishes easily. Structural and Appearance grades can sometimes be combined as well. Not listed in CITES. 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. The flame spread rating for Western Red Cedar is 45 (Class B rating). The structural grades of Yellow Cedar are ideal for uses where strength and/or natural durability are important. It's stronger than Western red or Eastern white, but you're never going to find any large enough for rafters. TS/RS ratio: Stability: Crushing strength *: Mean Std dev. 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. They are used to regulate the use of interior finish materials to reduce the probability of rapid fire spread. Historically, western red cedar (also known as western redcedar) was a very important plant for the indigenous or First Nations people who lived in the coastal area. Check certification status with suppliers. Like all woods, Western Red Cedar is hygroscopic and will absorb or discharge moisture to attain equilibrium with the surrounding atmosphere. Stumpage prices in 1927 were about one-third of those of Sitka spruce, western red cedar, and Douglas fir. White pine will last a very long time if properly cared for. Shrinkage in both the radial and tangential directions is given in Table 3 (in the Product Selection tab). Fasteners should be corrosion resistant such as aluminum, hot-dipped galvanized or stainless steel. Western red cedar will remain dimensionally stable under most weather conditions and is not prone to shrinkage or swelling. Environmental. Western red cedar is one of the most commercially valuable species. It concerns structural graded timber in vertical uses with mean density upper 0.35 and thickness upper 22 mm. or 25' high, they branch like crazy, and the wood is only commercially marketed for aromatic purposes (anti-insect) for closet linings and the like. Shrinkage does not begin until the fiber saturation point is reached. One of the lightest commercial softwoods, the density of Western Red Cedar at oven-dry conditions is approximately 22 pounds per cubic foot with a relative density(specific gravity) of 0.35. 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. Austin Wholesale Decking Supply 10900 N Lamar Blvd., Austin, TX 78753 Phone: 512/834-1200 2. Review specification options of Western Red Cedar, including lumber and appearance grades, as well as compatible fastener selection. Tree roots stabilize and feed the tree, and if they are damaged by yard tools, the tree can suffer. The most sought after property of Western Red Cedar is its resistance to decay and insect damage, lasting in most any environment well over 100 years. Western Red Cedar especially is superior to steel, concrete, and brick in this respect. 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. In this article, I describe forty facts about the plant and the importance of the “tree of life” in the local culture. Colour: Yellow to a medium brownish colour. Precautions and toxicity of red cedar. Of all available softwood species, cedar tends to be one of the best thermal insulators. Softwoods have been exported from the United States for over 400 years. Medium-to-fine texture. Aromatic Red Cedar glues and finishes well, though in many applications, the wood is left unfinished to preserve its aromatic properties. Medicinal and Other Uses for the Western Red Cedar. Western Red Cedar is the largest and most abundant of all cedars in managed forests. Western red cedar, Thuja plicata. DURABILITY–Western red cedar, atlantic white cedar and Alaskan yellow cedar are naturally durable softwoods that creates extractives (Thujaplicans and Phenolics) that ward off decay caused by insects, water infiltration, and fungi.The extractives increase with age leading to a longer lasting product life cycle–especially in exterior applications. 2. Western red cedar is a large softwood that grows in British Columbia and some of the nearby western states of the USA including Washington, Oregon, Montana and Idaho. Question: We have specified the use of western red cedar in an office building to be used as either wall and/or ceiling cladding. Examine Western Red Cedar as a building material in order to understand its durable and sustainable properties. Modulus of Elasticity of Wood, Wood Engineering Design Data. trailer <<4ad01420134611da8c53001124daefbc>]>> startxref 0 %%EOF 237 0 obj<>stream Floor, ceiling and wall assemblies of wood can provide effective economical sound insulation and absorption when properly utilized. Radial shrinkage applies to the width of vertical grain lumber: tangential to the width of flat grain lumber. Cedar trees fall under the Cedrus genus and the Pinaceae family, which is the family of treesthat is coniferous. Find out how to identify this majestic tree and also its benefits and uses. While most trees decompose with a few years, this giant tree may take over 100 years to rot and return to the soil. Cypress is one of the most versatile timbers available for use in exterior applications. Design values provided for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska. 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 only notable difference is the natural durability which is rated as moderately durable (imported material is classified as durable). Timber properties of noble fir, Norway spruce, western red cedar and western hemlock grown in Great Britain (PDF, 580.1kB) The softwood processing sector in Great Britain has been built around the use of a very small number of timber-producing species – predominantly Sitka spruce. We know this can get confusing, so if you want to do more research you can visit the Western Red Cedar Lumber Association website for more grade info. Western Red Cedar has good fastening properties but its natural preservatives have a corrosive effect on some unprotected metals in close contact, causing a black stain on the wood. The cost of logging western hemlock is ordinarily high as com- British grown western red cedar generally has similar properties to material imported from North America. Western Red Cedar’s open cellular structure helps to absorb and dissipate sound energy, making it effective in confining noise. changeable in that they share performance properties and are similar in appearance. Characteristic values of mechanical properties and density were determined and indicative yields for different strength classes were calculated. In dry wood, these cavities are filled with air which is one of the best known thermal insulators. Includes bibliographical references. For structural applications, Western species readily combine into six Species Groups, shown below. An important acoustical property of wood is its ability to damp vibrations. Environmental. Visually, western red cedar is favoured for its rich and inviting colours. The heartwood ranges from a pale brown through to a richer dark brown. 0000002446 00000 n Smoke developed classifications reflect the amount of smoke released by burning material. Douglas Fir, Ponderosa Pine, White Fir and Western Red Cedar are the most common single species sold as dimension lumber products. The trees themselves rarely exceed 8" dia. NLGA grades are approved by the American Lumber Standards Board of Review and are accepted under all US building codes. Western hemlock is increasing in the esteem of lumbermen. It is non-resinous and has a strong spicy scent. 1. Characteristic values of mechanical properties and density were determined and indicative yields for different strength classes were calculated. 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. The smoke developed index for Western Red Cedar is 125. Not listed in CITES. Odor: Aromatic Red Cedar has a distinct and tell-tale scent: the wood is commonly used in closets and chests to repel moths and other insects. Detailed product information is available from the Western Red Cedar Lumber Association. Cedar and pine are two common options used for many building projects, both of which have a variety of subspecies scattered around the world. Only a couple of species of Cedrus exist in the world, but they exhibit certain traits that make them very popular. Trucking from the west coast, and the general higher cost of cedar vs. pine will put a dent in your wallet. Wood is an excellent thermal insulator. ¬ The open cell structure of the timber is able to absorb and dissipate sound energy. Cedrus libani Loud. Historically, native peoples of the Pacific coast prized cedar for its long lasting qualities and used wood and bark from cedar trees for most of their building needs. Western Red Cedar has flame and smoke development ratings that are higher than most in its class. ¬ The cell structure converts the sound energy into heat by friction and viscoelastic resistance. This usually includes interior wall and ceiling finishes, flooring, windows, doors and other wood products. C. libanotica Loud. Believed available from well-managed sources. 0000011118 00000 n As Hokie says, Eastern Red Cedar is a juniper. 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. This is due to its high proportion of air spaces and its low density. ����{ᚏOS ^��\A(�O.���3U����x��������$�5͘q�[U�����[1�,f��lh_a��A|����������&y���M��[p(��s{���4�3)�s� �H5�2�;�x���'��,����S/“X��6w���0���y��@̶�A�R�][��P�hw�yK���M�͆.ۼ��^s��׃> 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. 0000001686 00000 n What lies beneath a tree is just as important -- if not more so -- than what grows above. Materials are burned in a test furnace for a relative assessment of flammability. 8" x 8" x 20' (240") = $300 each - Qty 1 2" x 12" x 18' (216") = $125 each - Qty 1 - clear grain Euroclasses grading: END-USES RESEARCH PAPER FPL 191 . American softwoods have the strength […] ��(p�Z� Distribution. Cedrus atlantica Manetti produces Atlantic or Atlas cedar, a native of Algeria and Morocco. Western red cedar, Thuja plicata. 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