Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Family Name Grain Heartwood Color Kiln Drying Rate Kiln Schedules Movement in Service Nailing Natural Durability Numerical Data References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Screwing Strength Properties Texture Trade Name Tree Size Turning Veneering Qualities		Scientific Name Acacia richii Trade Name Qumu Family Name Leguminosae Common Names Qumu Regions of Distribution Oceania and S.E. Asia Countries of Distribution  [VIEW MAP] Fiji [Polynesia] 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 Heartwood Color Brown Yellow Orange Red Yellow to golden-yellow to orange Brown Red Sapwood Color Different than heartwood Grain Even Figure Straight Distinct (figure) Variable (figure) Straight Irregular color Distinct figure Texture Medium Medium Natural Durability Resistant to powder post beetles Susceptible to insect attack Non-durable Perishable Resistant to attack from powder post (Lyctid & Bostrychid) beetles Non durable Perishable Kiln Schedules Kiln Drying Rate (in days) is fairly rapid Drying Defects Checking Distortion Slight twist/warp Slight surface checking Kiln Drying Rate Drying rate is fairly rapid to fast Rapid Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm) Tree Size Bole length is 10-20 m Sapwood width is 0-5 cm Bole length is 20-30 m Tree height is 50-60 m Tree height is 60-70 m Cutting Resistance Fairly Difficult to Very Difficult to saw Cutting Resistance with green wood is difficult Cutting Resistance with dry wood is difficult Movement in Service Excellent Stability - Small Movement Stable Nailing Pre-Boring Recommended Possible if prebored Resistance to Impregnation Permeable sapwood Resistant heartwood Resistant sapwood Sapwood is permeable Heartwood is resistant Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Moderate working qualities Easy to machine Screwing Pre-boring recommended Possible if prebored Turning Fairly Easy to Very Easy Very Good to Excellent Results Fairly Difficult to Very Difficult Fair to Good Results Turns with moderate ease Good results Easy to turn Veneering Qualities Suitable for peeling Suitable for slicing Difficult to veneer Veneers easily Veneers moderately easy Suitable for slicing Suitable for peeling Easy to cut Diifficult to veneer Strength Properties Max. crushing strength = high Bending strength (MOR) = high Modulus of Elasticity (stiffness) = high 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 Numerical Data Item Green Dry English Bending Strength 13576 20956 psi Density 51 lbs/ft3 Maximum Crushing Strength 6899 9945 psi Shearing Strength 2312 psi Stiffness 2208 2546 1000 psi Weight 50 41 lbs/ft3 Radial Shrinkage 2 % Tangential Shrinkage 7 % Item Green Dry Metric Bending Strength 954 1473 kg/cm2 Density 817 kg/m3 Maximum Crushing Strength 485 699 kg/cm2 Shearing Strength 162 kg/cm2 Stiffness 155 179 1000 kg/cm2 Weight 801 657 kg/m3 Radial Shrinkage 2 % References Alston, A.S.,1966,Powder Post Beetle Lyctus Species,Fiji Forestry Department, Suva. Fiji timbers and their uses No.6 Bolza, 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.,62 Fiji Department of Forestry,1969,A Summary of the Properties of 34 Indigenous Timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.38 Fiji 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, Fiji Fiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71 Keating, 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