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Pacific silver fir
Pacific silver fir (Abies amabilis)

Family: Pinaceae

Common names: Alpine fir, Amabilis fir, Balsam, Balsam fir, Cascade fir, Fir, Great silver fir, Larch, Lovely fir, Pacific silver fir, Red fir, Silver fir, Western fir, White fir

Distributed in: Canada, United States (North America)

Distribution overview: Pacific Silver Fir is native to the Pacific Coast region from Alaska south to western British Columbia, to western Oregon and locally in northwestern California (Siskiyou County). It grows from about sea level in the western limits of its range, to 6,000 feet in the Cascades. This tree prefers cool, wet regions. It is often found in the coastal fog belt and interior mountain valleys in coniferous forests, and is the dominant fir in the Olympic Mountains of Washington.

Common uses: Beams, Boxes and crates, Building construction, Cabin construction, Casks, Concrete formwork, Construction, Cooperages, Decks, Decorative plywood, Dressed boards, Exterior trim & siding, Exterior uses, Factory construction, Form work, Foundation posts, Framing, Heavy construction, Joinery, Joists, Light construction, Lumber, Millwork, Moldings, Packing cases, Plywood, Porch columns, Pulp/Paper products, Pulpwood, Rough boards/dimension stock, Rough construction, Shakes, Sheathing, Shingles, Siding

Environment profile: Widespread

Tree size: Trunk diameter is 100-150 cm

Colors: the heart isWhitish, Yellowand the sapwoodWhite, Yellow.The grain isStriped figure, the textureMedium

Natural durability: Resistant to attack from pinworms (ambrosia beetles), Very little natural resistance

Odor: No odor, generally.

Kiln Schedules: UK=L US=T14C6S/T12C5S -

Drying Defects: Uneven Moisture Content, Uneven moisture content

Ease of Drying: Moderately Difficult to Difficult

Comments: General finishing qualities are rated as good

Blunting Effect: Little

Boring: Fairly easy to very easy

Carving: Fairly Easy to Very Easy

Gluing: Very Good to Excellent Results

Mortising: Fairly Easy to Very Easy

Moulding: Fairly Easy to Very Easy

Movement in Service: Fairly Easy to Very Easy

Nailing: Holds nails well, Very Good to Excellent

Planing: Straight grained and easy to work in most machining operations

Resistance to Impregnation: Resistant sapwood

Response to hand tools: Easy to machine

Routing recessing: Fairly Easy to Very Easy

Veneering qualities: Veneers easily, Veneers moderately easy

Screwing: Very Good to Excellent Results, Very good screw holding qualities; Turning: Fairly Easy to Very Easy

Painting: Very Good to Excellent; Polishing: Very Good to Excellent; Staining: Very Good to Excellent; Varnishing: Very Good to Excellent;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,31 0,31
Density 400 kg/m3
Bending Strength 396 659 kg/cm2
Crushing Strength 15 33 kg/cm2
Hardness 171 kg
Impact Strength 53 60 cm
Shearing Strength 73 kg/cm2
Stiffness 94 112 1000 kg/cm2
Tangential Shrinkage 9 %
Radial Shrinkage 4 %
Weight 400 336 kg/m3
Maximum Load 0,35 0,56 cm-kg/cm3
Toughness cm-kg
Static Bending kg/cm2
Item Green Dry English
Bending Strength 5633 9381 psi
Crushing Strength 221 475 psi
Density 25 lbs/ft3
Hardness 377 lbs
Impact Strength 21 24 inches
Maximum Crushing Strength 3022 5716 psi
Shearing Strength 1052 psi
Stiffness 1342 1602 1000 psi
Work to Maximum Load 5 8 inch-lbs/in3
Specific Gravity 0.31 0.31
Weight 25 21 lbs/ft3
Radial Shrinkage 4 %
Tangential Shrinkage 9 %
Volumetric Shrinkage 13 %

Density (dry weight) = 23-30 lbs/cu. ft. 0
Work to Maximum Load = very low
Shearing strength (parallel to grain) = very low
Modulus of Elasticity (stiffness) = low
Hardness (side grain) = very soft
Bending strength (MOR) = low
Toughness-Hammer drop (Impact Strength) = low
Max. crushing strength = medium
Max. crushing strength = low
Surfaces may dent easily
Soft
Shrinkage, Tangential = large
Shrinkage, Radial = moderate
Crushing strength = medium
Bending strength (MOR) = very low
Bending strength (MOR) = medium

Boone, R.S., C.J. Kozlik, P.J. Bois, E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Hardwoods - Temperate and Tropical. USDA, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.Brown, W.H.,1978,Timbers of the World: - No.7 North America,TRADAClifford, 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. LondonForest Products Research Laboratory U.K.,1957,A Handbook of Softwoods,Department of Scientific and Industrial Research Forest Products Research,HMSOHoward, 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 CuttingLittle, E.L.1980.The Audobon Society Field Guide to North American Trees - Western Region.Published by Alfred 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. Textbook of Wood Technology. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.Patterson, D.,1988,Commercial Timbers of the World, 5th Edition,Gower Technical PressStone, H.,1924,The Timbers of Commerce and their Identification,William Rider & Sons Ltd. LondonTitmuss, 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. Agriculture Handbook No. 72. United States Department of Agriculture, Forest Service, 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
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