The NHLA Rules were designed to provide a measurable percentage of clear, defect-free wood for each grade. James P. Crowley, Secretary The owner of the lumber should be prepared to turn and move the boards for the inspector. The National Grading Rule for all North American dimension lumber 2" to 4" thick, as developed by the National Grading Rule Committee*, is incorporated into the NLGA Rule. Grades: All North American grades produced under National Lumber Grading Authority (NLGA) and to Canadian Lumber Standards (CLS) are available. h�b```f``2c`2f11 �P��9.,uP� X�P���;���Þ[Y�ww7��*7��]�q��b�u�联B�� � '�x��8���X*��cV>���1����Ɗ�� Q���� d2 A career in the hardwood industry starts with NHLA. Please contact them for information concerning their respective rules. In addition to North American domestic grade rules, PLIB has a long history of supporting overseas export lumber trade by providing supervisory services for other international grades and standards including: 1. To access this article, please, Access everything in the JPASS collection, Download up to 10 article PDFs to save and keep, Download up to 120 article PDFs to save and keep. And fifth, we promote capacity building by helping to organise training courses, workshops, and conferences. Association. The National Grading Rule establishes standard lumber grades and grade names, assuring users of uniform design and performance for all commercial species of dimension lumber. These rules recognized four grades of lumber: (i) bests or clear lumber, (ii) good or select lumber, (iii) common or lumber containing numerous sound knots, and (iv) culls or usable lumber containing coarse defects. 35, No. Association. First, we publish world-class science via our peer-reviewed forestry journal, the International Forestry Review, in which the most up-to-date research results are published. The NLGA Grade Rule incorporates the National Grading Rule for Dimension Lumber (NGR). JSTOR is part of ITHAKA, a not-for-profit organization helping the academic community use digital technologies to preserve the scholarly record and to advance research and teaching in sustainable ways. demand for North American hardwood lumber and advocate the ... NHLA RULES. The FAS grade includes a range of boards that yield from 83.33% (ten-twelfths) to 100% clear-wood cuttings over the entire surface of the board. : Uppers, Good, Fine Common, Common, Shipping Culls and Culls. • Publication = NHLA Grading Rules for North American Hardwoods. Walnut Prime Yields At Least 83-1/3% Clear-Face Cuttings And 66 2/3% On The Back. General notes and definitions are given. Minimum Cutting Sizes Of 3” X 6’ Or 4” X 3’. NORTH AMERICAN SOFTWOOD GRADING RULES (PART I) 43 grades for the timber, viz. NGRDL: 1975 National grading rules for softwood dimension lumber. This is the highest grade, and NHLA states for all lumber the following: 83.3% clear of defect on both faces; Minimum Board Size: 6″x8′ Minimum Clear Cutting Size: 3″x7′ or 4″x5′ Now for Walnut lumber, the rules are changed, and the bar is lowered to allow a wider sample of wood into the grade. %PDF-1.5 %���� The number of these cuttings permitted depends on the size of the board, with most boards permitting one to two. CLSAB has four main roles: 1. NORTH AMERICAN SOFTWOOD GRADING RULES PART II By BRYAN LATHAM SUMMARY Continuing his article (see Part I in Vol. Third, we encourage professional excellence and promote career development using a range of awards, such as the Queen’s Award for Forestry, the Young Forester Award and the Young Scientist Research Award. The market, such as it was, tended to be chaotic. Dimension lumber is generally grade stamped on one face at a distance of approximately 600 mm (2 ft) from one end of the piece, in order to ensure that the stamp will be clearly visible during construction. Standard Grading Rules for Northeastern Lumber; published by the Northeast Lumber Manufacturers Association (NeLMA), … We work in all corners of the Commonwealth and beyond to promote the wise management of trees and forests, and we do this in five main ways. Cabinet grade is graded from the worst face and yields 66.67% clear face cuttings while Custom Shop is graded from the better face and yields 66.67% clear face cuttings. 42-55) the author goes on to describe White Pine Grading Rules from Eastern Canada and from them passes to those for Red (Norway) Pine issued by the same authority, the White Pine Bureau, The clear cuttings must be a minimum size of 3" wide by 7' long or 4" wide by 5' long. North American hardwoods ©2000-2021 ITHAKA. 79 0 obj <>stream Then there is the "R" list drawn up to meet the requirements of the export markets. In the 1800's, large North American lumber producers developed their own grading rules. For example, Douglas Fir Grades have the following divisions: Clear, Construction, Structural, Industrial and Railway and Material Grades. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. The history of grading from the mid-19th century is sketched and early rules are deemed to bear little relation to the complicated structure of grading now obtaining for instance on the West Coast where frequent overhaul of regulations has taken place leading to the three separate but closely related systems at present in force on the Pacific Coast. herein is designated “American Lumber Stand-ard” (ALS) program lumber only when graded under rules certified by the Board of Review (Board). 2017 Standard Grading Rules For Canadian Lumber. Grading rules for African and South American sawn timber have been developed by ATIBT according to the rules of the Sciages Avivés Tropicaux Africains (SATA) and is based on clear cuttings – established by the percentage of the clear surface. Lumber Rule 36 400NR Scaling Rule Measures Board Feet Content of Lumber Four-Line Lumber Scaling Rule, made of flexible split hickory shafts, is covered with two coats of polyurethane plastic 4-line ruler with straight head 1" x 36" Four line configuration with 9'11'13'15' on … Hemlock and spruce grades are similarly dealt with. SPIB rules (portions) ALSC and CLSAB accreditations include glued and machine graded lumber (MSR and MEL) and heat-treated (HT) lumber. Tropical Hardwood Machined Lumber Products Grading Rules ** Please note that, effective March 1, 2019, Supplements to the NLGA Standard Grading Rules have been posted on this website under Publications – Updates. National Lumber Grading Authority, Canada. Sustainable forest management plays a central role in our future, which in turn requires the training and development of forestry professionals.  That's where the CFA comes in. These are described. The accredited agencies in the lumber program operate under one or more of the following six sets of grading rules and are available from the publishing agency. With a personal account, you can read up to 100 articles each month for free. endstream endobj startxref NLGA: 1987 National grading rules for dimension lumber. The grading of sawn wood into categories as it is processed helps to determine to a large extent the value and potential use possible for each board of sawn lumber.” Worldwide, hardwood lumber producers “grade” their lumber, assuring downstream consumers of the lumber of the lumber's quality for the intended use. The NHLA grades are based on the percentage of clear-defect free wood on a board. 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. The NHLA lumber grading rules adopted by the US hardwood industry are based on an imperial measurement system using inches and feet. The Pacific Lumber Inspection Bureau (PLIB) is accredited by the American Lumber Standards Committee (ALSC), the Canadian Lumber Standards Accreditation Board (CLSAB), North America’s only lumber grading accreditation bodies, and by the International Accreditation Service (IAS), a nonprofit, public-benefit corporation and a subsidiary of the International Code Council (ICC), the … Our highest quality grade is known as J-Grade, manufactured and graded for maximum structural performance under paragraph 124b of the NLGA rules and for strict appearance application. Google Scholar. h�bbd```b``� ��`�,�L��H� �hfbs������ �)� r5H��g&����jq����0 �� Some notes follow on Box Lumber, Mining Timber, grades of Cutting and of Pieces, with final notes on special Wall Core Stock of Cedar, and finally the author deals with Stress grades.