812 South Riverside Ave, St. Clair, MI 48079. Building codes widely used in the U.S. and Canada typically require graded, stamped lumber to be used in framing.
For Biewer, just meeting these requirements isnt good enough; compared to our competition our Standard Grade lumber is smoother, has less wane, less splits and less cupping. The mill identification name or number is also included. "#1 Structural"= at least 75% clear wood; "#2 Structural"= at least 66% clear wood; "#3 Structural" ("stud" grade) = at least 50% clear wood; "Construction Grade"= at least 57% clear wood; "Standard Grade"= at least 43% clear wood; and. A lumber grade is the quality-control standard for lumber that has been in place sincesuch standardswere instituted in 1960, following a revision to Canadian and U.S. building codes. The additional expense of kiln-dried wood is the reason it is used in only a small portion of construction. As one of the largest lumber manufacturers in the Midwest, Biewer carries a complete line of Standard Grade lumber products. The Only Choice for Quality Building Products. Home inspectors can check suspect lumber for an end-stamp that has the following information: by Nick Gromicko, CMI, Kenton Shepard and Kate Tarasenko. Most lumber is dried to the "S-DRY" (surfaced dry) condition, meaning that that the moisture content is less than 19%. WWPA grades for dimension lumber are established by the American Lumber Standard Committee, Inc., in accordance with DOC (U.S. Department of Commerce) Product Standard 20. The National Lumber Grades Authority (NLGA) is the organization responsible for the establishment, issuance, publication, amendment and interpretation of Canadian lumber grading rules and standards. NLGA is the only recognized rules writing body for lumber grades and standards in Canada. The grade is: Structural Joists & Planks(2x5 through 4x18, intended for engineering applications for lumber 5" and wider, such as floor and ceiling joists, rafters, headers, small beams, trusses and general framing applications. Under the National Grading Rule, there are three moisture-content conditions: "S-GRN" (surfaced green) means that the moisture content is above 19%.
Although an official ban was never imposed, several manufacturers voluntarily discontinued using CCA in their wood products.
Some common examples include: "S-P-F" represents spruce-pine-fir, a common grouping for some of the Eastern softwoods.
In summary, information about the wood's quality is contained in grading stamps, which are placed on every piece of manufactured lumber. This is a commitment that has kept our business growing, and a philosophy we intend to keep. and provides certification to help you stand out from the crowd.
BIEWER LUMBER ANNOUNCES PLANS FOR A SECOND SAWMILL IN THE SOUTH. The grade itself is indicated. Damper regions of the world often require kiln-dried wood for construction, which must have a moisture content of 19% or less. The grades are based on a visual or digital scan evaluation of each lumber piece. 2No.
InterNACHI can help you get licensed in your state or province,
The species of lumber is stamped, and is also abbreviated. Every Biewerproduct meets the stringent guidelines required for strength, appearance and suitability. to make gluing and finishing more feasible.
ALL Rights Reserved. Standard Grade lumber is more commonly known as Commercial or Common Grade lumber. Grades are: SELECT STRUCTURALNo. 3. Inspectors should not use these guidelines to guess the grade of lumber that has no visible grade stamp. Structural engineers take these grades into consideration when designing structures. Builders, inspectors and other professionals use these grades to ensure that quality lumber is used where it is needed.
Western Wood Products Association represents softwood lumber manufacturers in the 12 Western states and Alaska. The membership of NLGA consists of all the independent lumber grading agencies operating in Canada (which are accredited by the CLSAB and ALSC) that oversee the grading activities of certified Canadian lumber producing facilities. Dimension Lumber grades are divided into the following classifications: Structural Light Framing(2x2 through 4x4, used where high-strength design values are required in light framing sizes, such as in engineered wood trusses.)
Grades are: Stud(2x2 through 4x18, an optional grade intended for vertical use, as in load bearing walls.) Since lumber comes from a natural source, much of it has naturally occurring defects, such as large knots or splits, and these can reduce its strength. These standards are also reinforced by Northeastern Lumber Manufacturers Association (NeLMA) and the National Hardwood Lumber Association (NHLA). The U.S. Consumer Product Safety Commission (CPSC) and the U.S. EPA (Environmental Protection Agency) received several petitions in 2001 asking that the use of CCA in wood playground equipment and other outdoor structures be banned because of concerns that physical contact with the wood and surrounding soil could increase the risk of certain kinds of cancer caused by the arsenic contained in CCA.
In wood, CCA is used as a chemical preservative.
Light Framing(2x2 through 4x4, basic framing lumber, as used in most light-frame construction, e.g. 1No. 2No. Wood-constructed homes, roof shakes and shingles, exterior decks, and children's play equipment that were built before 2004 and not made of cedar or redwood were likely constructed using wood that was pressure-treated with CCA, or chromated copper arsenate.
CCA is also a pesticide. wall framing, sills, plates, cripples, blocking, etc.)
Western Wood Products Association1500 SW First Ave., STE 870Portland, OR 97201Phone: 503-224-3930Fax: 503-224-3935Email: firstname.lastname@example.org, 2022 WWPA.
Keep in mind that lumber, which may leave the mill very wet, is wrapped in plastic and stays wrapped until its uncovered at the job site. Since the beginning of John A. Biewer Co., Inc., one simple principle has served Biewer well: Deliver the best products and services to our customers.
Eco-labels, as they are sometimes called, are an easy way to identify materials that have been grown, harvested and milled in an ecologically sensitive manner. Because of these and less obvious defects, lumber that leaves a sawmill must be appraised by trained inspectors and assigned a grading stamp. CCA is comprised of arsenic, chromium and copper. You'll alsofind the moisture content of the wood, which is determined at the mill when the stamp is applied.
Lumber that has been treated with flame-resistant chemicals may bear a "D-BLAZE" notation on its grade stamp. For advertising purposes, mills pay grading agencies for the right to place a grade stamp on their lumber. Most of this lumber is used either where a more rustic decorative appearance is required or for general construction purposes. Grades are: SELECT STRUCTURALNo.1 & BTR(in Douglas Fir, Douglas Fir-Larch, or Hem-Fir species only.)No. "Hem-fir" stands for Western hemlock and true firs. "Utility Grade"= at least 29% clear wood.
It can retain a lot of moisture and develop large mold colonies, which are then incorporated into the walls of the home when that lumber is used for framing.
As of December 2006, more than 200 million acres of forest in 76 countries have received certification by the Forest Stewardship Council (FSC) in an effort to promote sustainable harvesting.
The NLGA Grade Rule is approved and enforced by the Canadian Lumber Standards Accreditation Board (CLSAB) for Canadian Standard Lumber and by the American Lumber Standard Committee, Incorporated (ALSC) Board of Review for American Standard Lumber. These approvals enable acceptance of dimension lumber graded according to the NLGA Grade Rule for structural use under Canadian and American building codes. The grading rules are published in the Western Lumber Grading Rules book. We have lumber grades for all of your needs.
Western Wood Products Association (WWPA). Now That Youve Had a Home Inspection book. The NLGA Grade Rule incorporates the National Grading Rule for Dimension Lumber (NGR). The NGR establishes standard lumber grades and grade names for all commercial species of dimension lumber, thus assuring lumber users of uniform design criteria and performance throughout Canada and the U.S. Some mills stamp their name or trademark on the lumber as well. NLGA also establishes and monitors structural lumber design values of Canadian species. These lumber design values are approved by the CSA O86 Technical Committee on Engineering Design in Wood for use in Canada and by the ALSC Board of Review for use in the U.S. They can be identified on a stamp by the following abbreviations: Northeastern Lumber Manufacturers Association (NELMA); Northern Hardwood and Pine Manufacturers Association (NHPMA); West Coast Lumber Inspection Bureau (WCLB); and. to reduce the risk of insectand fungal damage; to control the amount of shrinkage that takes place; and. Dimension lumber grading rules limit natural characteristics and manufacturing imperfections that affect the strength and utility of the piece. 3, Western Wood Species BookVol 1 - Dimension Lumber. There are plenty of #3 grade panels that that appear clear of all knots, and #2 grade panels may have knots, splits and generally look awful. Biewer Sawmill Winona, Inc. has officially broke ground! "DF-L" refers to Douglas fir and Western larch. "MC15" means that the moisture content is less than 15%. In the U.S., there are six associations that develop and publish grade rules and issue grade stamps.
Check out our Lumber Grade Comparison Guide. However, wooden structures and residential components that use CCA pressure-treated wood may still exist in or on a property. Biewer announces reorganization of sawmill sales department. When the mill subscribes, they are assigned an identification number by that grading agency. There are strict rules governing Standard Grade lumber as established by the U.S. Department of Commerce and maintained by the American Lumber Standards Committee. Homeowners who are concerned about this can contact their local health department for information on how to have those structures and components tested for arsenic, along with information about their risk of exposure. Inspectors may also find stamps signifying that wood has been harvested sustainably. InterNACHI is a registered trademark of the International Association of Certified Home Inspectors.
Quadruple your inspection business and reduce your liability with the A grade stamp is printed on lumber produced in North America, but what does it mean? Lumber bearing an FSC stamp has been approved by that organization. 1 & BTR (DF-L, DF & Hem-Fir species only)No.
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