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Saturday, August 8, 2020 | History

3 edition of Basic wood properties of second-growth western hemlock found in the catalog.

Basic wood properties of second-growth western hemlock

L. A. Jozsa

Basic wood properties of second-growth western hemlock

by L. A. Jozsa

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Published by B.C. Ministry of Forests, Forest Practices Branch in Victoria, B.C .
Written in English

    Subjects:
  • Western hemlock.

  • Edition Notes

    StatementL.A. Jozsa, B.D. Munro and J.R. Gordon.
    SeriesSpecial publication -- no. SP-38., Special publication (Forintek Canada Corp.) -- no. SP-38.
    ContributionsForintek Canada Corp.
    The Physical Object
    Paginationvii, 51 p. :
    Number of Pages51
    ID Numbers
    Open LibraryOL15495608M
    ISBN 100772635137

      Article in press - uncorrected proof ANN prediction of wood strength Table 1 Mean (and standard deviation) of wood and strength properties of old-growth and second-growth western hemlock from coastal British Columbia, Canada. pneumatic saw, and allowed to acclimate to 7% moisture before density analysis. books of the rules-writing agencies listed in Table 7–1. De-sign properties will vary by size, species, and grade and are published in the appropriate rule books and in the National Design Specification for Wood Construction (AF&PA). Grouping of Species Most species are grouped together and the lumber from them treated as equivalent.

    Western hemlock - Tsuga heterophylla Common names. Pacific hemlock, West Coast hemlock. Related "commercial" species (with similar properties) Mountain hemlock - Tsuga mertensiana, found mainly in coastal BC; about the same density as western hemlock but lower in bending strength and n hemlock - Tsuga canadensis, not recommended for furniture. Western hemlock is used for pulpwood, lumber, and plywood.

    Wood, in the strict sense, is yielded by trees, which increase in diameter by the formation, between the existing wood and the inner bark, of new woody layers which envelop the entire stem, living branches, and process is known as secondary growth; it is the result of cell division in the vascular cambium, a lateral meristem, and subsequent expansion of the new cells. wood properties of 4 species: Norway spruce Western hemlock Western red cedar Noble fir • Project is funded the Scottish Forestry Trust, FC Scotland and Natural Resources Wales Samples from 3 sites for each species (England, Wales and Scotland).


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Basic wood properties of second-growth western hemlock by L. A. Jozsa Download PDF EPUB FB2

Basic wood properties of second-growth western hemlock: Author(s) or contact(s): F. Barber Source: Forest Practices Branch Subject: Forestry General Series: Silviculture Other details: Published Hardcopy is available.

Get this from a library. Basic wood properties of second-growth western hemlock. [L A Jozsa; Forintek Canada Corp.] -- Properties assessed within and among trees include relative density of wood, shrinkage, moisture content, relative proportions of heartwood sapwood, bark thickness, compression wood, spiral grain.

This report describes some of the background and Basic wood properties of second-growth western hemlock book of work done to date on second-growth western hemlock (Tsuga heterophylla) basic wood properties at Forintek Canada Corp.

The B.C. Ministry of Forests Research Branch, UBC Forestry Faculty and PAPRICAN were the other cooperating agencies on this project and they investigated live crown/tree growth relationships, strength properties Cited by: BibTeX @ARTICLE{Jozsa98basicwood, author = {L.

Jozsa and B. Munro and J. Gordon and Forest Practices Branch and Jozsa L. A and Forest Practices Branch}, title = {Basic wood properties of second-growth western hemlock}, journal = {Forintek Canada}, year = {}}. Basic wood properties of second-growth western hemlock By L.

Jozsa, B. Munro, J. Gordon and Forest Practices BranchJozsa L. A and Forest Practices Branch. [Show full abstract] influence on mechanical pulping and pulp properties of second-growth western hemlock. Differences in pulp properties between the second-growth and oldgrowth wood.

Comments: Western Hemlock is the largest of the hemlocks, and is one of the most valuable sources of exportable lumber for Canada; the species is also the state tree of Washington. When compared to Eastern Hemlock (Tsuga canadensis), Western Hemlock generally has narrower growth rings, though both species can have tightly spaced growth rings.

See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. Pricing/Availability: Eastern Hemlock is one of the two primary commercial species of hemlock harvested in North America—with the other being Western Hemlock (Tsuga heterophylla).

Hemlock is used primarily as a construction timber, and is in good supply. Basic Wood Properties of Second-growth Western Hemlock iii Abstract This report describes some of the background and results of work done to date on second-growth western hemlock basic wood properties at Forintek Canada Corp.

The B.C. Ministry of Forests Research Branch. Basic wood properties of second-growth western hemlock. Forintek Canada Corp. Vancouver, B.C.

Pub. SP, 51 p. Goudie, J.W. Modelling the impact of silvicultural activities on the wood characteristics of coastal western hemlock in British Columbia.

Western hemlock is a magnificent tree reaching to feet high with diameters of 3 to 4 feet at maturity. The lower 3/4 of the main stem will be free of branches. Mechanical properties of second-growth hemlock.

Basic Wood Properties of Second-Growth Western Hemlock, Forintek Canada Corp. Special Publ. SP Ellis, S. The effects of spray-drying parameters on some chemical and physical characteristics of powdered phenolformaldehyde resins. For. Prod. 46(9) Song, Dongjin and. Basic wood properties of second-growth western hemlock Keyphrases b.c.

ministry report contact additional copy second-growth western hemlock basic wood property. Many of the mechanical properties of wood tabulated in this chapter were derived from extensive sampling and analysis procedures.

These properties are represented as the average Hemlock, western Larch, western Pine Loblolly WESTERN HEMLOCK BASIC WOOD PROPERTIES Second Growth Hemlock – Total Stemwood Density Distribution Port Mellon Port Hardy Lake Cowichan Port Hardy M22 Port Renfrew Total Stem Density Site.

Basic Wood Properties of Second-Growth Western Hemlock, Forintek Canada Corp. Special Publ. SP Ellis, S. The effects of spray-drying parameters on some chemical and physical characteristics of powdered phenolformaldehyde resins.

Properties of western hemlock 6 General description 6 Natural defects Reported 7 Characteristics which distinguish west- ern Literaturehemlock from other species of wood. 7 Properties of western hemlock—Con. Page and their characteristics 8 Mechanical and physical properties 17 properties 38 of western hemlock Design values provided herein are for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska.

Except as otherwise noted, the values are computed in accordance with ASTM standards based on clear-wood tests or on tests of full-size pieces in. Western hemlock (Tsuga heterophylla) is the most plentiful tree species on the coast of British Columbia.

It is commonly sold and shipped together with amabilis fir under the name Hem-Fir (also often referred to as Hem-Bal). This species is used for general construction, roof decking and plywood, as well as for laminating stock and the production of glue-laminated and solid beams.

Compared to. Download PDF Properties Of Western Hemlock And Their Relation To Uses Of The Wood book full free. Properties Of Western Hemlock And Their Relation To Uses Of The Wood ava. Eastern hemlock, on the other hand, is a conifer tree that is grown for its foliage and is considered safe and non-poisonous.

Its needles are used as a tea. History/Folklore: The Greeks recognized Western hemlock as a poison. As a convicted prisoner, it was a Western hemlock drink that Socrates was condemned to drink.Average values of elastic moduli along the tangential (E T) and radial (E R) axes of wood for samples from a few species are given in the following table as ratios with elastic moduli along the longitudinal (E L) axis.

Since the modulus of elasticity values are determined from bending, the tabulated values given above includes an effect of. Drying rate was affected by basic density, initial moisture content, percent heartwood, and growth ring angle at 80[degrees]C and only initial moisture content at [degrees]C.

Presorting into two groups based on these wood properties reduced the standard deviation of the final moisture content distribution by 40 percent.