Sei in: home » database dei legni
Fornitori
|
Ditta 5
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
|
Ditta 4
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
|
Ditta 3
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
|
Ditta 2
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
|
Ditta 1
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
|
Ditta 0
Indirizzo: via dei platani 4 liguria Tel.: +39 456 5664 54 Sito web: www.pippo.it E-mail: pippo at libero.it |
Contatti
database dei legni
Eastern hemlock (Tsuga canadensis)
Family: Pinaceae Common names: American hemlock, Canada hemlock, Canadian hemlock, Common hemlock, Eastern hemlock, Hemlock, Hemlock spruce, Spruce pine, White hemlock Distributed in: Canada, United States (North America) Distribution overview: Eastern hemlock occurs in Canada, from Nova Scotia to southwestern Ontario. In the United States it is distributed in Alabama, Connecticut, Delaware, Georgia, Kentucky, Massachusetts, Maryland, Maine, Michigan, North Carolina, Great Smoky Mountain National Park, Minnesota, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, Indiana, Wisconsin, and West Virginia. The tree grows in acid soils in moist cool valleys and rock outcrops, particularly north-facing bluffs. It is often found in pure stands. Common uses: Agricultural implements, Beams, Boxes and crates, Building construction, Building materials, Cabin construction, Casks, Concrete formwork, Construction, Decks, Domestic flooring, Factory construction, Factory flooring, Flooring, Form work, Foundation posts, Framing, Heavy construction, Joinery, Joists, Light construction, Millwork, Packing cases, Pallets, Piling, Plywood, Poles, Porch columns, Pulp/Paper products, Pulpwood, Rafters, Railroad cars, Railroad ties, Roofing, Rough construction, Shakes, Shingles, Siding, Sub-flooring, Toys, Vehicle parts Product sources: Supplies of hemlock in the United States and Canada are, however, excellent. The wood compares favorably with Lodgepine pine (Pinus contorta) for certain applications, but costs about half the price of lodgepole pine. Environment profile: May be rare in some parts of its range Tree size: Tree height is greater than 70 m
Colors: the heart isWhite to cream, Yellow to golden-yellow to orangeand the sapwoodRed, Same as heartwood.The grain isTwisted, the textureMedium coarse to coarse
Natural durability: Susceptible to attack from termites (Isoptera), Very little natural resistance Odor: No specific taste Kiln Schedules: T12 - C4 (4/4); T11 - C3 (8/4) US Drying Defects: Severe twisting/warping
Wetwood and compression wood may cause degrades such as, uneven moisture content, warp, and ring shakes during drying.
Ease of Drying: Rapidly Gluing: Fairly Easy to Very Easy Nailing: Holds satisfactorily, Tends to split during nailing Planing: Planes to a poor finish Resistance to Impregnation: Heartwood is resistant Resistance to Splitting: Poor
Response to hand tools: Poor machining qualities Veneering qualities: Diifficult to veneer, Drying degrade is often moderate to severe, with collapse, buckles, and splilts
Painting: Satisfactory; Staining: Finish is generally good
;
Density (dry weight) = 23-30 lbs/cu. ft. Work to Maximum Load = very low Modulus of Elasticity (stiffness) = very low Max. crushing strength = medium Hardness (side grain) = very soft Bending strength (MOR) = low Shrinkage, Radial = very small Shearing strength (parallel to grain) = very low Shrinkage, Tangential = very small Shrinkage, Tangential = moderate Max. crushing strength = low Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = very low Hemlock is described as one of the hardest softwoods, and is usually available in long clear lengths. Compared to Western hemlock, Eastern hemlock is brashy and brittle, and does not respond as well to machining operations Boone, R.S., C.J. Kozlik, P.J. Bois and E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Woods: Temperate and Tropical. United States Department of Agriculture, Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-57, Madison, Wisconsin.Brisbin, R.L.,1970,American Woods - Eastern Hemlock,USDA, Forest Service American Woods FS-239Brown, H.P. and Panshin, A.J.,1940,Commercial Timbers of the United States Their structure, identification,,properties and uses,McGraw-Hill, LondonBrown, W.H.,1978,Timbers of the World: - No.7 North America,TRADACanadian Forestry Service. 1981.Canadian Woods - Their Properties and Uses. Third Edition. E.J. Mullins and T.S. McKnight, Editors. Published by University of Toronto Press, Toronto, Canada.Dallimore, W. and Jackson, A. Bruce,1966,A Handbook of Coniferae and Ginkgoaceae Fourth Ed. Revised by S.G.,Harrison,Edward Arnold (Publishers) Ltd. LondonForest Products Research Laboratory, U.K.,1945,A Handbook of Empire Timbers,Department of Scientific and Industrial Research Forest Products ResearchHoward, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.I.U.F.R.O.,1973,Veneer Species of the World,Assembled at F.P.L. Madison on behalf of I.U.F.R.O. Working Party on,Slicing and Veneer CuttingKaiser, J. 1990. Wood of the Month - Hemlock: The Hardworking Softwood. Wood of the Month Annual, Supplement to Wood and Wood Products, September, 1990. Page 12A.Little, E.L.1980.The Audubon Society Field Guide to North American Trees - Eastern Region.Published by Arthur A. Knopf, New York.Markwardt, L.J., Wilson, T.R.C.,1935,Strength and related properties of woods grown in the United States,U.S.A. Department of Agriculture Technical Bulletin,No.479Mullins, E.J. and McKnight, T.S.,1981,Canadian Woods Their Properties and Uses,University of Toronto Press 3rd EditionPanshin, A.J. and C. deZeeuw. 1980. Textbook of Wood Technology, 4th Edition. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressRecord, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University PressTitmuss, F.H.,1965,Commercial Timbers of the World,Technical Press Ltd., London, 3rd editionU.S.D.A. Forest Service,1974,Wood Handbook,U.S.A. Department of Agriculture, Forest Service Handbook,72USDA. 1987. Wood Handbook - Wood as an Engineering Material, Forest Service, Agriculture Handbook No. 72, Forest Products Laboratory, Madison, Wisconsin.USDA. 1988. Dry Kiln Operators Manual, Preliminary Copy. Forest Service, Forest Products Laboratory, Madison, Wisconsin.Wolcott, G.N.,1950,An Index to the Termite Resistance of Woods,Agricultural Experimental Station, University of Puerto Rico Bulletin,No.85 |
*Come interpretare i dati (manleva su eventuali imprecisioni)
Messenger id: XXXXXXXXXX - Skype id: XXXXXXXXX
Copyright © 2025 | P.IVA 01158930998 Perito Camera di Commercio di Genova n.1917 settore Legnami e Pavimenti in legno
