Identifying Woods Temperate Hardwoods Oak Ash Beech Birch
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Lvl) Having Different Patterns of Assembly
PEER-REVIEWED ARTICLE bioresources.com MECHANICAL PROPERTIES ANALYSIS AND RELIABILITY ASSESSMENT OF LAMINATED VENEER LUMBER (LVL) HAVING DIFFERENT PATTERNS OF ASSEMBLY a,b a, Bing Xue, and Yingcheng Hu * Laminated Veneer Lumber (LVL) panels made from poplar (Populus ussuriensis Kom.) and birch (Betula platyphylla Suk.) veneers were tested for mechanical properties. The effects of the assembly pattern on the modulus of elasticity (MOE) and modulus of rupture (MOR) of the LVL with vertical load testing were investigated. Three analytical methods were used: composite material mechanics, computer simulation, and static testing. The reliability of the different LVL assembly patterns was assessed using the method of Monte-Carlo. The results showed that the theoretical and ANSYS analysis results of the LVL MOE and MOR were very close to those of the static test results, and the largest proportional error was not greater than 5%. The veneer amount was the same, but the strength and reliability of the LVL made of birch veneers on the top and bottom was much more than the LVL made of poplar veneers. Good assembly patterns can improve the utility value of wood. Keywords: Laminated veneer lumber (LVL); Mechanical properties; Assembly pattern; Reliability; Poplar; Birch Contact information: a: Key Laboratory of Bio-based Material Science and Technology of Ministry of Education of China, College of Material Science and Engineering, Northeast Forestry University, Harbin, 150040, China; b: Heilongjiang Institute of Science and Technology, Harbin, 150027, China; * Corresponding author: [email protected] INTRODUCTION Wood is a hard fibrous tissue found in many plants. It has many favorable properties such as its processing ability, physical and mechanical properties, and aesthetics, as well as being environmentally and health friendly. -
LVL - Laminated Veneer Lumber) by Pollmeier Health Product by Pollmeier Inc
BauBuche (LVL - Laminated Veneer Lumber) by Pollmeier Health Product by Pollmeier Inc. Declaration v2.2 created via: HPDC Online Builder HPD UNIQUE IDENTIFIER: 20788 CLASSIFICATION: 06 71 13 Wood and Plastic PRODUCT DESCRIPTION: BauBuche LVL by Pollmeier - Made from 100% sustainable PEFC and FSC certified European Beech lumber and ULEF resorcinol resins. BauBuche LVL panels can be used for a variety of non structural architectural applications like flooring, wall paneling, table tops, furniture, mouldings, and various millwork projects. Section 1: Summary Basic Method / Product Threshold CONTENT INVENTORY Inventory Reporting Format Threshold level Residuals/Impurities All Substances Above the Threshold Indicated Are: Nested Materials Method 100 ppm Considered Characterized Yes Ex/SC Yes No Basic Method 1,000 ppm Partially Considered % weight and role provided for all substances. Per GHS SDS Not Considered Threshold Disclosed Per Other Explanation(s) provided Screened Yes Ex/SC Yes No Material for Residuals/Impurities? All substances screened using Priority Hazard Lists with Product Yes No results disclosed. Identified Yes Ex/SC Yes No One or more substances not disclosed by Name (Specific or Generic) and Identifier and/ or one or more Special Condition did not follow guidance. CONTENT IN DESCENDING ORDER OF QUANTITY Number of Greenscreen BM-4/BM3 contents ... 0 Summary of product contents and results from screening individual chemical Contents highest concern GreenScreen substances against HPD Priority Hazard Lists and the GreenScreen for Safer Benchmark or List translator Score ... LT-P1 Chemicals®. The HPD does not assess whether using or handling this Nanomaterial ... No product will expose individuals to its chemical substances or any health risk. -
Use of Wood Residue in Making Reconstituted Board Products
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1959 Use of wood residue in making reconstituted board products Suthi Harnsongkram The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Harnsongkram, Suthi, "Use of wood residue in making reconstituted board products" (1959). Graduate Student Theses, Dissertations, & Professional Papers. 3981. https://scholarworks.umt.edu/etd/3981 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. THE USE OF WOOD RESIDUE IN MAKING RECONSTITUTED BOMD HiODUCTS SUTHI HARNSOMJKRAM B.S.F., Unlveinsity of the Philippines, 1952 Presented in partial fulfillment of the requirements for the degree of Master of Forestry MONTANA STATE UNIVERSITY 1959 Approved Dean, Graduate School I 3 I960 Date UMI Number: EP34193 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent on the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. UMT " DlM«litionP«ibWfca ^ UMI EP34193 Copyright 2012 by ProQuest LLC. All rights reserved. This edition of the work is protected against unauthorized copying under Title 17, United States Code. -
Wood Characteristics Today
Wood Characteristics Today About 90% of all timber harvested in the United States comes from Private Land Only 10% comes from Government owned land Name the process of replanting small seedling trees as the mature trees are harvested? Reforestation Woods Natural Glue What natural adhesive material holds wood fibers together? Lignin New wood cells are formed in what layer? Draw and label the Photo to the right. Cambium When combined, the bands of springwood and summerwood form what? Annual Rings The age of most trees can be determined by counting the number of annual rings. Trees and lumber can be divided into what two main classes? A. Softwoods B. Hardwoods What is the scientific What is the scientific name for hardwood name for Softwood trees? trees? Deciduous Coniferous Softwood is a product of cone-bearing trees. Red Cedar The brilliant color, distinctive aroma and the moth- repelling qualities of Tennessee Red Cedar make this the ideal wood for chests and closet linings, or for the lining of chests made of other woods. Softwood is a product of cone-bearing trees. Pine Ponderosa Pine is a very large pine tree of variable habit native to western North America, but widespread throughout the temperate world. This softwood is known for its rustic, knotty appearance and is commonly seen in warm cabins in both the Sierra Nevada and Rocky Mountains. Softwood is a product of cone-bearing trees. Fir Mixed grain Douglas Fir is a resilient timber with a high strength to weight ratio. It has been widely used for various construction projects for centuries. -
Big Trees in the Southern Forest Inventory
United States Department of Big Trees in the Southern Agriculture Forest Inventory Forest Service Southern Christopher M. Oswalt, Sonja N. Oswalt, Research Station and Thomas J. Brandeis Research Note SRS–19 March 2010 Abstract or multiple years. Listings of big trees encountered during the most recent forest inventory activities in the South Big trees fascinate people worldwide, inspiring respect, awe, and oftentimes, even controversy. This paper uses a modified version of are reported in this research note and should supplement American Forests’ Big Trees Measuring Guide point system (May 1990) existing lists and registers. to rank trees sampled between January of 1998 and September of 2007 on over 89,000 plots by the Forest Service, U.S. Department of Agriculture, For more than 75 years, the FIA Program has been charged Forest Inventory and Analysis Program in the Southern United States. Trees were ranked across all States and for each State. There were 1,354,965 by Congress to “make and keep current a comprehensive trees from 12 continental States, Puerto Rico, and the U.S. Virgin Islands inventory and analysis of the present and prospective sampled. A bald cypress (Taxodium distichum) in Arkansas was the biggest conditions of and requirements for the renewable resources tree (according to the point system) recorded in the South, with a diameter of the forest and rangelands of the United States” of 78.5 inches and a height of 93 feet (total points = 339.615). The tallest tree recorded in the South was a 152-foot tall pecan (Carya illinoinensis) in (McSweeney-McNary Act of May 22, 1928. -
AMERICAN BEECH a Tree in Trouble
Hiawatha National Forest WARNING! While there are no pure beech stands on the AMERICAN Hiawatha National Forest (HNF), many of Wind in the Trees the hardwood stands include a significant BEECH component of beech. HNF has included The Forest Service is making every effort A Tree in Trouble these areas in the BBD Project Environmen- to identify and remove hazardous trees tal Analysis. These stands are within the ad- vancing front of the BBD and many of the from developed areas as quickly as possi- stands already have the beech scale present, ble. However, all visitors - but particularly particularly in the north and east portions of hikers and overnight backcountry campers the project area. Areas that have not yet been - should be alert for trees that are weak- infested will likely be infested within 1-3 ened, have large dead limbs or are com- years. Safety is the number one concern. Dy- ing beech trees will need to be removed in all pletely dead, especially in windy condi- high use public areas to prevent them from tions. becoming a safety hazard. The recreation Be alert. Look up. Choose your team on the HNF is assessing these areas campsites carefully. (including parking areas, campsites, trails, and The American beech (Fagus grandifolia) is a day use areas) to determine what the poten- tall, stately tree with smooth grey bark and tial hazards will be and the best way to deal Hiawatha National Forest a graceful arching crown. Its dark green, with them. Munising Ranger District shiny leaves, tapered at both ends, turn 400 East Munising Avenue golden in the fall and cling to its branches throughout the winter. -
Modelling Mechanical Properties of Spruce and Douglas Fir Timber By
Modelling mechanical properties of spruce and Douglas fir timber by means of X-ray and grain angle measurements for strength grading purpose Joffrey Viguier, Damien Bourreau, Jean-François Bocquet, Guillaume Pot, Laurent Bléron, Jean-Denis Lanvin To cite this version: Joffrey Viguier, Damien Bourreau, Jean-François Bocquet, Guillaume Pot, Laurent Bléron, etal.. Modelling mechanical properties of spruce and Douglas fir timber by means of X-ray and grain angle measurements for strength grading purpose. European Journal of Wood and Wood Products, Springer Verlag, 2017, 75 (4), pp.527-541. 10.1007/s00107-016-1149-4. hal-01530963 HAL Id: hal-01530963 https://hal.archives-ouvertes.fr/hal-01530963 Submitted on 1 Jun 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution - ShareAlike| 4.0 International License Modelling mechanical properties of spruce and Douglas r timber by means of X-ray and grain angle measurements for strength grading purpose Jorey Viguier1∗, Damien Bourreau2, Jean-François Bocquet1, Guillaume -
This File Was Created by Scanning the Printed
Eur. J. Wood Prod. (2012) 70:37-43 DOl 1O.1007/s00107 -0 10-0494-y OSB as substrate for engineered wood flooring Costel Barbuta . Pierre Blanchet· Alain Cloutier· Vikram Yadama . Eini Lowell Received: 26 August 2009 / Published online: 13 November 2010 © Springer-Verlag 2010 Abstract Oriented strand board (OSB) is a commodity sheathing, OSB web stock and ponderosa pine OSB sub product subject to market fluctuation.Development of a spe strates showed higher distortion. The PYA type I adhesive cialty OSB could lead to a better, and more stable, market led to weak bonding with high-density OSB surface.The re segment for OSB. It was demonstrated in a previous study sults of this study demonstrate the potential of OSB panels (Barbuta et al. in Eur. 1. Wood Prod. 2010), that OSB may to be used as substrate for EWF. be designed to obtain a high bending modulus of elasticity in the parallel direction, close to Baltic Birch Plywood (BBP) OSB als Tragerplatte ffir Doppelboden in its strongest direction. This study focused on the use of such specialty OSB in the manufacturing of engineered Zusammenfassung OSB ist ein Massenprodukt, das wood flooring (EWF) prototypes,a product that widely uses Marktschwankungen unterliegt. Die Entwicklung spezieller BBP as substrate in Canada. The performance of these two OSB-Platten konnte zu besseren und stabileren Absatzmog prototypes (aspen/birch and ponderosa pine) was studied. lichkeiten flir OSB flihren. In einer frliherenStudie (Barbuta Five types of substrates: BBP, sheathing OSB, web stock et al. Eur. J. Wood Prod. 20 I 0) wurde die Moglichkeit auf OSB and the two specialty OSB prototypes were used to gezeigt, OSB herzustellen, dessen Biege-Elastizitatsmodul manufacture EWF. -
Wood & Veneer Care and Maintenance
Materials Wood & Veneer Care and Maintenance Wood and veneer products are natural wood, requiring more attention than other surfaces. When properly cared for, it will last long and keep looking beautiful. To maintain the quality of your Herman Miller products, please follow the cleaning procedures outlined here. Wood & Veneer Stains Herman Miller products finished with wood, wood veneer, Herman Miller woods and veneers meet strict testing standards or recut wood veneer, except the oiled Eames Lounge and for resistance to wear, light, stains, water, and pressure. Ottoman with Rosewood, Oiled Walnut, or Oiled Santos Palisander veneer, and the Eames Sofa back panels with To reduce the risk of damage, take some precautions: Oiled Walnut, unless specifically noted. Use coasters for glasses and mugs. Routine Care If a glass top is added to the wood or veneer surface, be sure it Normal Cleaning rests on felt pads. Dust regularly with a slightly damp, soft, lint-free cloth. Don’t place a potted plant on a wood or veneer surface unless Wipe dry with a dry, soft cloth in the direction of the wood grain. it’s in a water-tight container or in a drip tray. Spills should be immediately wiped up with a damp cloth. Don’t let vinyl binders stay on a surface for very long. Use protective pads under equipment with “rubber” cushioning Once a month feet. Some chemical compounds used in the feet on office Clean the surface with a soft cloth dampened with a quality equipment, such as printers and monitor stands, may leave cleaner formulated for wood furniture. -
ALTERNATIVE WOODS for GUITAR CONSTRUCTION
ALTERNATIVE WOODS for GUITAR CONSTRUCTION and other string fretted instruments by DAVID A. G. FREEMAN Luthier Prepared for Lecture at Metiers d’art de lutherie Quebec City, Quebec February 24,2013 Alternative Woods My intent tonight is to discuss what is desired in a wood to make it suitable for Instrument construction. This is from my own experimenting and research as well as discussions with other Luthiers. In order to understand what might be desirable in alternative woods one must first understand what the properties of a traditional wood are that contribute to the acoustics of instruments. Then one might look for woods that have similar qualities to achieve similar responses. To this end there is more than one variable, so it is important to have a clear concept of the sound one wants to achieve before you start. The other aspect you want to understand is what you are trading away, be it in sound, or structure, or aesthetics versus what you are gaining by using another wood species. Perhaps economics may also be considered in this balance. We live in an age when all musicians are not connoisseurs of resonant tone wood and want a less expensive instrument to carry on tours or play on the street. The other end of this spectrum is a collector that wants incredibly figured woods that still deliver a good tone. So be aware of the purpose of your choice to use a wood not traditionally found on an instrument. This helps you accept any acoustic changes that might occur. Woods can be tested with some science though many of the properties become relative to other species. -
Mid-Rise Engineering Considerations for Engineered Wood Products
Mid-Rise Engineering Considerations for Engineered Wood Products PresentedPresented by [ byPresenter’s Jeff Olson, Name ]P.E. Please add relevant logo here Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board. “The Wood Products Council” is a This course is registered with AIA CES Registered Provider with The for continuing professional education. American Institute of Architects As such, it does not include content Continuing Education Systems that may be deemed or construed to (AIA/CES), Provider #G516. be an approval or endorsement by the AIA of any material of Credit(s) earned on completion of this construction or any method or course will be reported to AIA CES for manner of handling, using, AIA members. Certificates of distributing, or dealing in any Completion for both AIA members material or product. and non-AIA members are available upon request. ______________________________ Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. Course Description Wood products take on a seemingly infinite variety of shapes and forms. While many designers are familiar with engineered wood products such as I-joists, wood sheathing and structural composite lumber, it is important to understand the structural requirements associated with each in order to achieve proper performance—especially in mid-rise applications. With an emphasis on products used in commercial and multi-family buildings, this presentation will cover fastening requirements, load capacity and proper detailing. Learning Objectives 1. Dimension stability in regards to moisture content changes and the differences between solid wood products. -
Chapter 3--Physical Properties and Moisture Relations of Wood
Chapter 3 Physical Properties and Moisture Relations of Wood William Simpson and Anton TenWolde he versatility of wood is demonstrated by a wide Contents variety of products. This variety is a result of a Appearance 3–1 spectrum of desirable physical characteristics or properties among the many species of wood. In many cases, Grain and Texture 3–1 more than one property of wood is important to the end Plainsawn and Quartersawn 3–2 product. For example, to select a wood species for a product, the value of appearance-type properties, such as texture, grain Decorative Features 3–2 pattern, or color, may be evaluated against the influence of Moisture Content 3–5 characteristics such as machinability, dimensional stability, Green Wood and Fiber Saturation Point 3–5 or decay resistance. Equilibrium Moisture Content 3–5 Wood exchanges moisture with air; the amount and direction of the exchange (gain or loss) depend on the relative humid- Sorption Hysteresis 3–7 ity and temperature of the air and the current amount of water Shrinkage 3–7 in the wood. This moisture relationship has an important Transverse and Volumetric 3–7 influence on wood properties and performance. This chapter discusses the physical properties of most interest in the Longitudinal 3–8 design of wood products. Moisture–Shrinkage Relationship 3–8 Some physical properties discussed and tabulated are influ- Weight, Density, and Specific Gravity 3–11 enced by species as well as variables like moisture content; Working Qualities 3–15 other properties tend to be independent of species. The thor- oughness of sampling and the degree of variability influence Decay Resistance 3–15 the confidence with which species-dependent properties are Thermal Properties 3–15 known.