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
Western hemlock (Tsuga heterophylla)
Family: Pinaceae Common names: Alaska pine, British Columbia hemlock, British columbian hemlock, Gray fir, Grey fir, Hemlock spruce, Huron pine, Pacific Coast hemlock, Pacific hemlock, Prince Albert fir, Prince Albert spruce, Silver fir, West coast hemlock, Western hemlock, Western hemlock fir, Western hemlock spruce, White hemlock Distributed in: Canada, United States (North America) Distribution overview: Western hemlock occurs in Alberta and on the coast of British Columbia in Canada. In the United States it is distributed in Alaska, California, Idaho, Montana, Oregon, Washington. It usually occurs in dense pure stands with Sitka spruce and other conifers. It thrives well in moist, acid soils, especially flats and lower slopes. Hemlock is also reported to grow in the forests of Japan, China, and India. Common uses: Beams, Boat building: masts, Boxes and crates, Broom handles, Building construction, Building materials, Cabin construction, Cabinetmaking, Canoes, Casks, Ceiling, Concrete formwork, Construction, Cooperages, Decks, Decorative plywood, Domestic flooring, Exterior trim & siding, Exterior uses, Factory construction, Factory flooring, Flooring, Form work, Foundation posts, Framing, Fuelwood, Furniture, Heavy construction, Interior construction, Joinery, Joists, Light construction, Oars, Packing cases, Paneling , Paneling, Parquet flooring, Piling, Plywood, Porch columns, Pulp/Paper products, Pulpwood, Railroad cars, Railroad ties, Rough construction, Shingles, Siding, Structural plywood, Sub-flooring, Utility plywood, Vehicle parts, Wainscotting Product sources: Hemlock is abundant in supply in the United States and Canada. It is also widely used in Japan. One of the most valuable sources of timber in Canada, Western hemlock is exported around the world.Apart from timber, the bark of Western hemlock yields large quantities of tannin which is used a mud additive in oil-well drilling. Environment profile: Vulnerable Tree size: Trunk diameter is 100-150 cm
Colors: the heart isWhitish, Yellow to golden-yellow to orangeand the sapwoodWhite, White to yellow.The grain isStraight, the textureMedium coarse to coarseand the lusterSlightly lustrous
Natural durability: Susceptible to marine borer attack, Very little natural resistance Odor: Wet wood may have a sour odor Kiln Schedules: UK=L US=T14C6S/T12C5S - Drying Defects: Slight surface checking, Slight twist/warp Ease of Drying: Thick Stock Requires Care Tree Identification: Bole/stem form is straight
Comments: General finishing qualities are rated as satisfactory Blunting Effect: Moderate Boring: Responds well to boring operations
Cutting Resistance: Fairly Difficult to Very Difficult to saw Gluing: Very good properties Mortising: Very good mortising characteristics Moulding: Very good moulding properties Movement in Service: Very good moulding properties Nailing: Holds satisfactorily, Possible if prebored Planing: Very good planing properties Resistance to Impregnation: Sapwood is resistant Resistance to Splitting: Poor Response to hand tools: Responds Readily Sanding: Good sanding finish
Veneering qualities: Moderately easy to veneer, There is slight to moderate drying degrade and the potential for buckles and splits Steam bending: Moderate
Screwing: Very good screw holding qualities, Very good screwing properties ; Turning: Very good
Painting: Satisfactory; Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Good;
Density (dry weight) = 31-37 lbs/cu. ft. 0 Bending strength (MOR) = low 0 Hardness (side grain) = very soft 0 Max. crushing strength = medium Density (dry weight) = 23-30 lbs/cu. ft. Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Toughness-Hammer drop (Impact Strength) = very low Modulus of Elasticity (stiffness) = low Toughness-Hammer drop (Impact Strength) = low Toughness (total work) = low Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = small Shrinkage, Radial = moderate Density (dry weight) = 38-45 lbs/cu. ft. Toughness (total work) = very low Soft Shrinkage, Tangential = small Shrinkage, Radial = fairly large Hardness (side grain) = soft Dents or scratches easily Bending strength (MOR) = very low Bending strength (MOR) = medium One of the most common trees in the Pacific Northwest, Western hemlock is reported to form wide, thick groves. Its timber is a primary source of pulwood, and also yields cellulose which is used for making cellophane, rayon, yarns, and plastics. Compared to Eastern hemlock, the wood is finer textured, straight-grained, and lighter in weight. Its machining properties are similar to the pines, and has also been compared to Douglas-fir and Spruce in character Banks, C.H. and J.P. Schoeman. 1963. Railway Sleeper and Crossing Timbers. Bulletin No. 41, Republic of South Africa. The Government Printer, Pretoria, South Africa.Betts, H.S.,1945,American Woods - Western Hemlock,USDA, Forest Service American WoodsBolza, E.,1976,Timber and Health,Div. Building Res. C.S.I.R.O. AustraliaBoone, 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.Brown, 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.Clifford, N.,1957,Timber Identification for the Builder and Architect,Leonard Hill (Books) LTD. LondonDallimore, W. and Jackson, A. Bruce,1966,A Handbook of Coniferae and Ginkgoaceae Fourth Ed. Revised by S.G.,Harrison,Edward Arnold (Publishers) Ltd. LondonFindlay, W.P.K.,1975,Timber: Properties and Uses,Crosby Lockwood Staples London,224PPForest Products Research Laboratory U.K.,1957,A Handbook of Softwoods,Department of Scientific and Industrial Research Forest Products Research,HMSOForest Products Research Laboratory, U.K.,1945,A Handbook of Empire Timbers,Department of Scientific and Industrial Research Forest Products ResearchForest Products Research Laboratory, U.K.,1967,The Steam Bending Properties of various timbers,Forest Products Research Laboratory, Princes Risborough, Leaflet,No.45Forest Products Research Laboratory, U.K.,1969,The Movement of Timbers,Forest Products Research Laboratory, Princes Risborough Technical Note,No.38Howard, 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 CuttingJackson, A. and D. Day.1991.Good Wood Handbook - The Woodworker's Guide to Identifying, Selecting and Using the Right Wood.Betterway Publications, Cincinnati, Ohio.Kaiser, 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.Kloot, N.H., Bolza, E.,1961,Properties of Timbers Imported into Australia,C.S.I.R.O. Forest Products Division Technological Paper,No.12Lavers, G.M.,1983,The Strength Properties of Timber (3rd ed. revised Moore G.L.,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Report (formerly Bulletin No.50)Little, E.L.The Audobon Society Field Guide to North America Trees - Western 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 EditionOliver, A.C.,1974,Timber for Marine and Freshwater Construction,TRADA, LondonPanshin, 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 PressRedding, L.W.,1971,Resistance of Timbers to Impregnation with Creosote,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Bulletin No.54 pp.43Rendle, B.J.,1969,World Timbers (3 Vols.,Ernest Benn Ltd. LondonRijsdijk, L.F. and Laming, P.B.,1994,Physical and Related Properties of 145 Timbers, Information for,Practice,TNO Building and Construction Research Centre for Timber Research Kluwer,Academic PublishersSmith, D.N.,1959,The Natural Durability of Timber,Forest Products Research Laboratory, Princes Risborough, Building Research,Establishment Record,No.30Steiger, A.,1973,Surveys of information on wood species 9,Holztechnologie,14(3, p184The Australian Timber Journal & Building Products, Merchandiser,1969,Timber Durability and Preservation,Supplement to Australian Timber Journal 35(4) Tech. Timb. Guide No.8Thomas, A.V.,1964,Timbers Used in the Boat Building Industry A Survey,Department of Scientific and Industrial Research Forest Products Research,LaboratoryTimber Development Association Ltd.,1955,World Timbers (3 Vols.,Timber Development Association Ltd.Titmuss, 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.Western Wood Products Association.19__.Softwoods of the Western USA.Published and Distributed by the Western Wood Products Association, Yeon Building, 522 S.W. Fifth Avenue, Portland, Oregon.Wood, A.D.,1963,Plywoods of the World: Their Development, Manufacture and,Application,Johnston & Bacon Ltd. Edinburgh & London |
*Come interpretare i dati (manleva su eventuali imprecisioni)
Messenger id: XXXXXXXXXX - Skype id: XXXXXXXXX
Copyright © 2024 | P.IVA 01158930998 Perito Camera di Commercio di Genova n.1917 settore Legnami e Pavimenti in legno
