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Contatti
database dei legni
Qumu (Acacia richii)
Family: Leguminosae Common names: Qumu Distributed in: Fiji [Polynesia] (Oceania and S.E. Asia) Common uses: Agricultural implements, Boat building (general), Cabinetmaking, Flooring: industrial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Paneling, Sporting Goods, Toys, Turnery, Vehicle parts Tree size: Tree height is 60-70 m
Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodDifferent than heartwood
.The grain isVariable (figure), the textureMedium
Natural durability: Resistant to powder post beetles, Susceptible to insect attack Kiln Schedules: Kiln Drying Rate (in days) is fairly rapid
Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm) Drying Defects: Slight surface checking, Slight twist/warp Cutting Resistance: Fairly Difficult to Very Difficult to saw Nailing: Possible if prebored, Pre-Boring Recommended Resistance to Impregnation: Sapwood is permeable Response to hand tools: Moderate working qualities Veneering qualities: Veneers easily, Veneers moderately easy
Screwing: Possible if prebored, Pre-boring recommended; Turning: Very Good to Excellent Results
Max. crushing strength = high 1 Bending strength (MOR) = high 1 Modulus of Elasticity (stiffness) = high 0 Density (dry weight)= 53 - 60 lbs/cu. ft Density (dry weight) = 46-52 lbs/cu. ft. Shrinkage, Radial = very small Shearing strength (parallel to grain) = medium Shrinkage, Tangential = fairly large Shrinkage, Tangential = very small Shrinkage, Tangential = small Shrinkage, Radial = small Shrinkage, Tangential = moderate Shrinkage, Radial = moderate Shearing strength (parallel to grain) = high Modulus of Elasticity (stiffness) = very high Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6Bolza, E., Kloot, N.H.,1972,The Mechanical Properties of 56 Fijian Timbers,Australia C.S.I.R.O. Division of Forest Products Technological Paper,No.,62Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38Fiji Forestry Department,1970,The Properties and Potential Uses of Qumu (Acacia richii) A Summary of,C.S.I.R.O. Investigations,Fiji Timbers and their Uses No.51,,Department of Forestry, Suva, FijiFiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Keating, W.G., Bolza, E.,1982,Characteristics properties and uses of timbers. South East Asia, Northern,Australia and the Pacific,C.S.I.R.O. Div. Chemical Technology,Inkata Press,1 |
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