Method to Estimate Dry-kiln Schedules and Species Groupings PDF Download
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Author: William Turner Simpson
Publisher:
ISBN:
Category : Drying
Languages : en
Pages : 60
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Author: William Turner Simpson
Publisher:
ISBN:
Category : Drying
Languages : en
Pages : 60
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Author: William Turner Simpson
Publisher:
ISBN:
Category : Hardwoods
Languages : en
Pages : 16
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Author:
Publisher:
ISBN:
Category : Forest products
Languages : en
Pages : 540
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Author: John J. Janowiak
Publisher:
ISBN:
Category : Laminated wood
Languages : en
Pages : 394
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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.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 574
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Author:
Publisher:
ISBN:
Category : Forest products
Languages : en
Pages : 258
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Author: Bohumil Francis Kukachka
Publisher:
ISBN:
Category :
Languages : en
Pages : 314
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Book Description
Author: Dominique Louppe
Publisher: PROTA
ISBN: 9057822091
Category : Timber
Languages : en
Pages : 706
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Author: Salif Diop
Publisher: Springer
ISBN: 3319253700
Category : Science
Languages : en
Pages : 330
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Book Description
This book provides recent environmental, ecological and hydrodynamic information for the major estuaries and the coastal marine systems of the Western Indian Ocean Region. It covers various functions and values of the region’s estuarine ecosystems and their respective habitats, including the land/ocean interactions that define and impact ecosystem services. The Western Indian Ocean region covered by this volume consists of the continental coastal states of Kenya, Mozambique, South Africa and Tanzania and the island states of Madagascar, Mauritius, Seychelles and Comoros.
Author: Jennifer Howard
Publisher: Frontiers Media SA
ISBN: 2889766934
Category : Nature
Languages : en
Pages : 171
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