FOREST SERVICE . Shrinkage in both the radial and tangential directions is given in Table 3 (in the Product Selection tab). ... are ASTM Standards D 2555 and D 245 for clear wood-based properties, and D 1990 for full-size test specimens. A decoction of the leaves has been used in the treatment of colds. Distribution. 0000001340 00000 n
Western Red Cedar has flame and smoke development ratings that are higher than most in its class. American softwoods have the strength […] Colour: Yellow to a medium brownish colour. TS/RS ratio: Stability: Crushing strength *: Mean Std dev. ����{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��׃> Durability As one of North America’s most durable woods, it lasts for decades and even centuries. It is non-resinous and has a strong spicy scent. Cedar is a type of coniferous wood, meaning that it is classified as a softwood and its cones/needles remain all year round. As Hokie says, Eastern Red Cedar is a juniper. 4 knots per 12’ of board is allowable. %PDF-1.3
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Shrinkage does not begin until the fiber saturation point is reached. Radial shrinkage applies to the width of vertical grain lumber: tangential to the width of flat grain lumber. Fasteners should be corrosion resistant such as aluminum, hot-dipped galvanized or stainless steel. Western Red Cedar Beams Full dimension beams. Cedar trees fall under the Cedrus genus and the Pinaceae family, which is the family of treesthat is coniferous. Design values provided for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska. 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. British grown western red cedar generally has similar properties to material imported from North America. The flame spread rating for Western Red Cedar is 45 (Class B rating). 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. 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. NLGA grades are approved by the American Lumber Standards Board of Review and are accepted under all US building codes. American softwoods have the strength […] Modulus of Elasticity of Wood, Wood Engineering Design Data. Western Red Cedar is used to manufacture a range of specialty products such as siding, paneling, structural decking and outdoor decking. Comparative oven-dry densities of cedar and some other softwood species are given in Table 1. Believed available from well-managed sources. Western Red Cedar is particularly effective in this regard and can be used to help reduce noise or to confine it to certain areas. What Western Red Cedar lacks in strength, it makes up for in appearance. The structural grades of Yellow Cedar are ideal for uses where strength and/or natural durability are important. The only notable difference is the natural durability which is rated as moderately durable (imported material is classified as durable). The following table is Structural Lumber Wood Engineering Properties. SP-37R) Co-published by Western Red Cedar Lumber Association and Western Red Cedar Export Association. 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. 1972 . Nails and screws used to fasten Western Red Cedar should An important acoustical property of wood is its ability to damp vibrations. ... and depth-effect adjustments are provided for Structural Decking. While most trees decompose with a few years, this giant tree may take over 100 years to rot and return to the soil. Cedar Sales offers a range of ceiling and wall designs that are engineer-approved to meet various acoustic ratings. Western hemlock is increasing in the esteem of lumbermen. Return to main Cedar page. Like all woods, Western Red Cedar is hygroscopic and will absorb or discharge moisture to attain equilibrium with the surrounding atmosphere. Average Dried Weight: 575 kg/m³. 1. Western Red Cedar especially is superior to steel, concrete, and brick in this respect. 1. Choosing the right type of wood for your project requires a little background knowledge of the traits of different woods. Douglas Fir, Ponderosa Pine, White Fir and Western Red Cedar are the most common single species sold as dimension lumber products. Western Red Cedar’s open cellular structure helps to absorb and dissipate sound energy, making it effective in confining noise. However, it has a very low shrinkage factor and is superior to all other coniferous woods in its resistance to warping, twisting and checking. They are used to regulate the use of interior finish materials to reduce the probability of rapid fire spread. When used as exterior cladding, Western Red Cedar keeps buildings cooler in summer, while cutting heating costs in winter. 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. 8" x 8" x 20' (240") = $300 each - Qty 1 2" x 12" x 18' (216") = $125 each - Qty 1 - clear grain ¬ The open cell structure of the timber is able to absorb and dissipate sound energy. 0000002446 00000 n
Their properties are similar to savin juniper. It concerns structural graded timber in vertical uses with mean density upper 0.35 and thickness upper 22 mm. Environmental. Cedrus atlantica Manetti produces Atlantic or Atlas cedar, a native of Algeria and Morocco. 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 is frequently the material of choice for pure Decorative trusses, but should be checked thoroughly if intended for use in Structural applications. (Special publication, ISSN 0824-2119 ; no. Detailed product information is available from the Western Red Cedar Lumber Association. Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). 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. If you don’t care to keep up with the maintenance than red cedar may be a good choice. Grain: Generally straight or spiralled. Sizes of rough and dressed Western Red Cedar are shown in Tables 1 and 2. The essential oil of red cedar is toxic. Wood has a cellular network of minute interlocking pores which converts sound energy into heat by frictional and viscoelastic resistance. 0000003840 00000 n
Here is an overview of the characteristics that determine the grades of Western Red Cedar: Clear Western Red Cedar. Today, America is recognized worldwide as a sustainable source of top quality products. The smoke developed index for Western Red Cedar is 125. I believe red cedar will cost more than twice as much in Western Mass for a log home. 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. Western red cedar, an ornamental and timber evergreen conifer of the cypress family (Cupressaceae), native to the Pacific coast of North America. 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. 0000004585 00000 n
Because of the high internal friction created by the cellular pore network, wood has more sound damping capacity than most structural materials. These superior ratings allow for cedar to be used in the interior of a structure without the need for treatment. British grown western red cedar generally has similar properties to material imported from North America. 0000018317 00000 n
Smoke developed classifications reflect the amount of smoke released by burning material. Not listed in CITES. 0000001705 00000 n
These properties can vary greatly depending on origin and growth conditions. Western red cedar. Medium-to-fine texture. The inherent strength of plywood also offers the added benefit of giving increased structural … 2. Review specification options of Western Red Cedar, including lumber and appearance grades, as well as compatible fastener selection. Western red cedar will remain dimensionally stable under most weather conditions and is not prone to shrinkage or swelling. 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. 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. Growth, properties and uses of western red cedar (Thuja plicata Donn ex D. Don)/by Josefi na S. Gonzalez. Cedar's low density enhances its insulation value and makes it an easy wood to transport and handle. What Western Red Cedar lacks in strength, it makes up for in appearance. Important structural properties of four Western softwoods : white pine, sugar pine, western redcedar, and Port-Orford-cedar. For many people in the US this is what comes to mind when the word cedar is … Fasteners should be corrosion resistant such as aluminum, hot-dipped galvanized or stainless steel. 234 0 obj <>
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¬ The cell structure converts the sound energy into heat by friction and viscoelastic resistance. syn. Not listed in CITES. 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. One of these is the Western Red Cedar, also called the giant cedar tree, which can grow to well over 200 feet tall! Western Red Cedar’s flame spread rating and smoke developed classification compare well with the ratings of many other species of both softwood and hardwood. Western Red Cedar offers the advantages of natural beauty, design flexibility, exceptional dimensional stability and long term durability. Trucking from the west coast, and the general higher cost of cedar vs. pine will put a dent in your wallet. 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. Wood is an excellent thermal insulator. 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. 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. Question: We have specified the use of western red cedar in an office building to be used as either wall and/or ceiling cladding. In this article, I describe forty facts about the plant and the importance of the “tree of life” in the local culture. 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. 0000002940 00000 n
Softwoods have been exported from the United States for over 400 years. The results showed that all of the species investigated can produce structural timber, but that western red cedar has the least desirable properties … Western Red Cedar is used to manufacture a range of specialty products such as siding, paneling, structural decking and outdoor decking. Heartwood varies from dark reddish brown to a pinkish color and has excellent weather-resistant properties. Check certification status with suppliers. Includes bibliographical references. The trees themselves rarely exceed 8" dia. 0000001686 00000 n
It is available in clear or knotty grades with smooth surfaced, combed or rough sawn finishes; kiln dried or unseasoned (green); flat grain and vertical grain. 0000001473 00000 n
In this article, I describe forty facts about the plant and the importance of the “tree of life” in the local culture. Make sure stainless steel fixings are used, however! Forest Products Laboratory, Forest Service … 0000011118 00000 n
12% is the summer average equilibrium moisture content in most areas of the US. Our BCA consultant requires confirmation that the western red cedar is a … Stumpage prices in 1927 were about one-third of those of Sitka spruce, western red cedar, and Douglas fir. 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 size differential between dry and unseasoned Western Red Cedar is given in Table 2 (in the Product Selection tab). Cedar and pine are two common options used for many building projects, both of which have a variety of subspecies scattered around the world. [B A Bendtsen; Forest Products Laboratory (U.S.)] There are few more versatile building materials than Western Red Cedar which is ideal both for indoor and outdoor uses. When a material has good thermal conductivity, it means that it can keep buildings warm in the winter and cool in the summer. 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. The lower the flame spread rating, the more the material resists the spread of fire. Aromatic Red Cedar glues and finishes well, though in many applications, the wood is left unfinished to preserve its aromatic properties. The conduction of heat in wood is directly related to its density. The cost of logging western hemlock is ordinarily high as com- Because of its favorable performance, Western Red Cedar can be used for interior finish in some building applications where other species would not be permitted. Characteristic values of mechanical properties and density were determined and indicative yields for different strength classes were calculated. Cypress is one of the most versatile timbers available for use in exterior applications. Western red cedar is one of the most commercially valuable species. Comparative oven-dry densities of cedar and some other softwood species are given in the Table 1 below. Demonstrate Western Red Cedar’s versatility as a building material through three case studies Visually, western red cedar is favoured for its rich and inviting colours. Western red cedar trees may grow up to 60 meters (about 200 feet) tall, and they have cinnamon-red or brownish bark. 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. The only notable difference is the natural durability which is rated as moderately durable (imported material is classified as durable). )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 The wonderful properties of CedarWestern Red Cedar is quality, beautiful, durable, versatile, easy to use and maintain. 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 Medicinal and Other Uses for the Western Red Cedar. The heartwood ranges from a pale brown through to a richer dark brown. 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 … Western Red Cedar especially is superior to steel, concrete, and brick in this respect. Cedar is a type of coniferous wood, meaning that it is classified as a softwood and its cones/needles remain all year round. Structural and Appearance grades can sometimes be combined as well. Find out how to identify this majestic tree and also its benefits and uses. When a material has good thermal conductivity, it means that it can keep buildings warm in the winter and cool in the summer. RESEARCH PAPER FPL 191 . For example, you could have a Number 2 structural grade that also has an A & Better appearance grade. Vertical grain means that the growth rings are parallel to each other on the face of the board and the wood is sawn specifically to achieve that look. 0000002672 00000 n
White pine will last a very long time if properly cared for. C. libanotica Loud. rȋ8��/�Jy Detailed product information is available from the Western Red Cedar Lumber Association. Of all available softwood species, cedar tends to be one of the best thermal insulators. Lengths are generally a few inches longer than the listed length. Battens and Screens In dry wood, these cavities are filled with air which is one of the best known thermal insulators. Western Red Cedar’s thermal properties include: A … Euroclasses grading: END-USES An infusion of the leaves has been used in the treatment of stomach pains and diarrhoea. Introduction . 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. Environmental. What lies beneath a tree is just as important -- if not more so -- than what grows above. Western red cedar, Thuja plicata. 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. Battens and Screens 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. Western red cedar. Cedar has a long history of withstanding the rigors of time and weather. 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. Growth, properties and uses of western red cedar (Thuja plicata Donn ex D. Don)/by Josefina S. Gonzalez. Austin Wholesale Decking Supply 10900 N Lamar Blvd., Austin, TX 78753 Phone: 512/834-1200 Customers who choose western red cedar are reducing their material consumption versus other building materials. Properly finished and maintained, cedar will deliver decades of trouble-free service. It is found as a tree or shrub. 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 (Special publication, ISSN 0824-2119 ; no. I. Cedrus libani Loud. Evidence of cedar’s durability are the many cedar artifacts still in good condition today. Western red cedar, Thuja plicata. 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. It is non-resinous and has a strong spicy scent. 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. For nominal widths, thicknesses and grades of some commonly available Western Red Cedar lumber products, see the Cedar Products section. This results in reduced energy usage and contributes towards a higher Green Star building rating. Very few materials can be reused like this from decommissioned structures, whereas composite materials go straight to landfill. Due to its soft properties, Western Red Cedar takes to machining very well, and it both screws and nails with good result. 3. No 2 & Better – A grade offered generally for Western Red Cedar timbers and beams when the finest quality rough lumber is desired. Acoustic properties. ��~F�yV�|y��*6���� �%$,�p� #�_Ӽ�>Rf� �NI}�nk���^:fҊM���T��
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Materials are burned in a test furnace for a relative assessment of flammability. 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. 0000001920 00000 n
2. 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. It contains several terpenes, podophyllotoxin, safrole, estragol that could cause harm to … This usually includes interior wall and ceiling finishes, flooring, windows, doors and other wood products. It is seldom, if ever, used in modern herbalism. 0000025703 00000 n
Characteristic values of mechanical properties and density were determined and indicative yields for different strength classes were calculated. Floor, ceiling and wall assemblies of wood can provide effective economical sound insulation and absorption when properly utilized. It's stronger than Western red or Eastern white, but you're never going to find any large enough for rafters. Cedrus deodara Loud. ��(p�Z� Characteristics & Properties of Western Red Cedar, characteristics-properties-of-western-red-cedar. produces cedar of Lebanon, a native of the Middle East. Flame spreading ratings describe the surface burning characteristics of interior finishes. 0000001538 00000 n
6% is the average equilibrium moisture content for interiors of heated buildings. information provided by the Western Red Cedar Lumber Association . 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. Its exceptional working properties like natural resistance to termite, rot and decay make it an ideal choice for outdoor applications. Precautions and toxicity of red cedar. The appealing dark colour, light weight and soft texture makes … 0000004778 00000 n
Only a couple of species of Cedrus exist in the world, but they exhibit certain traits that make them very popular. Alternate Combinations are available in non-structural grades. The Standard Species Combinations for structurally graded Western lumber are also shown on this page. Cypress is one of the most versatile timbers available for use in exterior applications. For structural applications, Western species readily combine into six Species Groups, shown below. 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. Tree roots can also cause damage of their own, when they break through concrete sidewalks or damage underground pipes. ACOUSTIC PROPERTIES ¬ Western Red Cedar reduces or confines noise when used on walls and ceilings. US codes set the maximum flame spread rating for interior wall and ceiling finishes in most buildings at 200. US codes set the maximum smoke developed classification for interior wall and ceiling finishes in most buildings at 450. Domestically, both pine and cedar are harvested mainly in the Northwest. Western Red Cedar lumber is available in visual stress grades for construction and finishing uses in a range of lengths, widths and thicknesses. Woods with low density have the highest thermal insulating value because such woods contain a high proportion of cell cavities. 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. 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. Today, America is recognized worldwide as a sustainable source of top quality products. IMPORTANT STRUCTURAL PROPERTIES OF FOUR WESTERN SOFTWOODS: WHITE PINE, SUGAR PINE, WESTERN REDCEDAR, AND PORT-ORFORD-CEDAR U.S.D.A. 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. trailer
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Includes bibliographical references. Lengths are generally a few inches longer than the listed length. Natural resistance to deterioration has long made Western Red Cedar the premier choice for either interior or exterior home use. Dimensionally stable, it takes paint, stains or varnishes easily. For many people in the US this is what comes to mind when the word cedar is … 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. 1. Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus. I. Believed available from well-managed sources. Herb: Western Red Cedar Latin name: Thuja plicata Synonyms: Thuja gigantea, Thuja lobbii, Thuja menziesii Family: Cupressaceae (Cypress Family) Medicinal use 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. 0000002737 00000 n
Detailed product information is available from the Western Red Cedar Lumber Association. class 3 - not in ground contact, outside 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. 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. �>�5�CO��4�����n�g�3�X�5j]X��Ȇl�VZ�N�1b!H�>�!a�خk-3R+�.Jk��Ms`�Ŷ��/J0� 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. These lovely deep green trees give off a fragrance that is just simply inspiring, I’d have to say. 0000026040 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. Twenty years ago the species was considered as having practically no value. Softwoods have been exported from the United States for over 400 years. Click here to request a quote - we offer VERY competitive pricing! 0000002606 00000 n
Of all available softwood species, cedar tends to be one of the best thermal insulators. 0000000716 00000 n
Western Red Cedar is used to manufacture a range of specialty products such as siding, paneling, structural decking and outdoor decking. This is an important characteristic since good thermal insulators help keep buildings cool in the summer and reduce heating costs in the winter. Wood is extremely durable and long lasting, and can be reclaimed from other projects and reused. This is due to its high proportion of air spaces and its low density. 8" x 8" x 20' (240") = $300 each - Qty 1 2" x 12" x 18' (216") = $125 each - Qty 1 - clear grain So we can't just say that western red cedar is a Group 3 material in all cases. Western Red Cedar is the largest and most abundant of all cedars in managed forests. Clear, Vertical Grain – This is the highest grade of Western Red Cedar. Structural lumber (including dimension lumber) is visually and/or mechanically (MSR) graded for its strength and physical working properties (appearance is secondary, unless specified). 0000005160 00000 n
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. changeable in that they share performance properties and are similar in appearance. Western Red Cedar Beams Full dimension beams. Get this from a library! Western Red Cedar’s stability makes it a very popular choice for pergolas and gazebos (provided structural support is not a requirement). }��MT_�5���L�0��P�ȅg��&�5Eo!�2Y��%�Z���-���n��\H��wDa���nZr�1�]�������ID�~�g���
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