Author: William Turner SimpsonPublisher:
ISBN:
Category : Drying
Languages : en
Pages : 60
Book Description
Method to Estimate Dry-kiln Schedules and Species Groupings
Author: William Turner SimpsonPublisher:
ISBN:
Category : Drying
Languages : en
Pages : 60
Book Description
Research Paper FPL-RP
Author: Plant Resources of Tropical Africa (PROTA)
Author: Dominique LouppePublisher: PROTA
ISBN: 9057822091
Category : Timber
Languages : en
Pages : 706
Book Description
Efficient Utilization of Red Maple Lumber in Glued-laminated Timber Beams
Author: John J. JanowiakPublisher:
ISBN:
Category : Laminated wood
Languages : en
Pages : 394
Book Description
The feasibility of utilizing cant-sawn hardwood lumber, which would not usually be desired for furniture manufacture, was studied for the manufacture of structural glued-laminated (glulam) timber. Two red maple beam combinations were evaluated: (1) a glulam combination designed with E-rated lumber in 25 percent of the outer laminations (top and bottom) and No. 3 grade lumber in 50 percent of the center laminations and (2) a wide-width glulam combination with laminations made from nominal 2- by 4- and 2- by 6-in. No. 2 grade lumber laid edge-to-edge having staggered end joints (termed 2 by 4/2 by 6 glulam combination). Test results of 42 red maple glulam beams showed that it was feasible to develop structural glulam timber from cant-sawn lumber. The glulam combinations made from E-rated lumber exceeded the target design bending stress of 2,400 lb/in2 and met the target modulus of elasticity (MOE) of 1.8 Ã 106 lb/in2. In addition, the 2 by 4/2 by 6 glulam combination exceeded published design stresses for vertically laminated bending strength, MOE in both the horizontally and vertically laminated orientations, and horizontal shear stress in the vertically laminated orientation. Based on the results of the 2 by 4/2 by 6 glulam combination, it was determined that edge gluing the laminations to form wide-width lumber is not required to achieve targeted strength and stiffness levels. Data analysis showed that ASTM D3737 procedures developed for softwood species accurately predict beam stiffness and provide conservative bending and horizontal shear strength estimates for red maple glulam beams. Also, it was shown that results from ASTM D143 shear-block tests could be used to accurately predict horizontal shear strength of 2 by 4 and 2 by 6 red maple glulam beams.
ISTF News
Author: Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 116
Book Description
Bibliography of Agriculture
Author: Bibliography of Agriculture with Subject Index
Author: Handbook of Industrial Drying
Author: Arun S. MujumdarPublisher: CRC Press
ISBN: 1420017616
Category : Science
Languages : en
Pages : 1310
Book Description
Still the Most Complete, Up-To-Date, and Reliable Reference in the FieldDrying is a highly energy-intensive operation and is encountered in nearly all industrial sectors. With rising energy costs and consumer demands for higher quality dried products, it is increasingly important to be aware of the latest developments in industrial drying technolog
The Atlantic Forest
Author: Marcia C. M. MarquesPublisher: Springer Nature
ISBN: 3030553221
Category : Science
Languages : en
Pages : 527
Book Description
The Atlantic Forest is one of the 36 hotspots for biodiversity conservation worldwide. It is a unique, large biome (more than 3000 km in latitude; 2500 in longitude), marked by high biodiversity, high degree of endemic species and, at the same time, extremely threatened. Approximately 70% of the Brazilian population lives in the area of this biome, which makes the conflict between biodiversity conservation and the sustainability of the human population a relevant issue. This book aims to cover: 1) the historical characterization and geographic variation of the biome; 2) the distribution of the diversity of some relevant taxa; 3) the main threats to biodiversity, and 4) possible opportunities to ensure the biodiversity conservation, and the economic and social sustainability. Also, it is hoped that this book can be useful for those involved in the development of public policies aimed at the conservation of this important global biome.
Kiln-Drying of Lumber
Author: R.B. KeeyPublisher: Springer Science & Business Media
ISBN: 3642596533
Category : Technology & Engineering
Languages : en
Pages : 331
Book Description
At present, no single book adequately covers a basic understanding of wood book satisfies the need for such a work. It describes drying in practice. This the fundamental basis of kiln-drying technology, to enable forest companies to imFrove their drying operations as high-quality timbers become scarcer and of yesteryear can no longer be tolerated. Adaptive the wasteful practices is no longer good enough. Innovations change based on past experience of the material being dried and the processes require a sound understanding of drying. Newer techniques, such as the use of ultrahigh temperature sea soning and superheated steam under vacuum, require an even greater depth of physical understanding for these methods to be used effectively and economically. book provides a description of modern ideas about wood structure, This moisture movement and stress development, from which models of the drying process are developed to give the kiln operator important information about the course of drying under specified conditions, and thus a means is compared with practice wherever for rational process improvement. Theory possible.