Laubu (Garcinia myrtifolia)
Family: Guttiferae
Common names: Laubu
Distributed in: Fiji [Polynesia] (Oceania and S.E. Asia)
Common uses: Agricultural implements, Boat building (general), Decks, Flooring, Flooring: commercial heavy traffic, Flooring: industrial heavy traffic, Handles: general, Heavy construction, Joinery, Ladders, Light construction, Paneling, Piling, Railroad ties, Sporting Goods, Tool handles, Vehicle parts
Tree size: Tree height is 20-30 m
Colors: the heart isYellow, Yellow to golden-yellow to orangeand the sapwoodWhite to yellow, Yellow.The grain isWavy, the textureMedium
Natural durability: Susceptible to insect attack, Susceptible to marine borer attack
Kiln Schedules: Kiln Drying Rate (in days) is rapid
Kiln Drying Rate: Rapid (<10 days for boards < 32 mm, to <30 days for boards >= 63 mm)
Drying Defects: Moderate twist/warp, No twisting or warping
Ease of Drying: Fairly Easy
Blunting Effect: High to severe
Boring: Fairly difficult to very difficult
Cutting Resistance: Fairly Difficult to Very Difficult to saw
Nailing: Fairly Easy to Very Easy, Holds nails well
Planing: Fairly Difficult to Very Difficult
Resistance to Impregnation: Sapwood is permeable
Resistance to Splitting: Satisfactory
Response to hand tools: Fairly Difficult to Difficult to Work
Veneering qualities: Veneers easily, Veneers moderately easy
Turning: Good results
Polishing: Fair to Good; Staining: Fair to Good;
- Numerical data Metric
- Numerical data English
- Strength properties
- References
|
|
|
|
Item |
Green |
Dry |
Metric |
Specific Gravity |
|
|
|
Density |
|
817 |
kg/m3 |
Bending Strength |
714 |
1113 |
kg/cm2 |
Crushing Strength |
485 |
699 |
kg/cm2 |
Hardness |
|
|
kg |
Impact Strength |
|
|
cm |
Shearing Strength |
|
155 |
kg/cm2 |
Stiffness |
124 |
143 |
1000 kg/cm2 |
Tangential Shrinkage |
|
|
% |
Radial Shrinkage |
4 |
|
% |
Weight |
801 |
641 |
kg/m3 |
Maximum Load |
|
|
cm-kg/cm3 |
Toughness |
|
|
cm-kg |
Static Bending |
|
|
kg/cm2 |
|
| | | | Item | Green | Dry | English | Bending Strength | 10164 | 15844 | psi | Density | | 51 | lbs/ft3 | Maximum Crushing Strength | 6899 | 9945 | psi | Shearing Strength | | 2205 | psi | Stiffness | 1766 | 2037 | 1000 psi | Weight | 50 | 40 | lbs/ft3 | Radial Shrinkage | 4 | | % | Tangential Shrinkage | 9 | | % | |
Max. crushing strength = high 1 Modulus of Elasticity (stiffness) = medium Bending strength (MOR) = medium Shearing strength (parallel to grain) = medium Density (dry weight) = 46-52 lbs/cu. ft. Shrinkage, Tangential = large Shrinkage, Radial = moderate Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = small Shrinkage, Radial = large Shrinkage, Radial = fairly large Modulus of Elasticity (stiffness) = high Density (dry weight) = 53-60 lbs/cu. ft Bending strength (MOR) = high Shrinkage, Tangential = small Density (dry weight) = 61-67 lbs/cu. ft
Alston, A.S.,1966,Natural Heartwood Durability,Fiji Forestry Department, Suva. Fiji timbers and their uses No. 2Alston, 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 Department of Forestry,1972,Guide to the use of local timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.55Fiji Forestry Department,1967,The Properties and Potential Uses of Laubu (Garcinia myrtifolia) A Summary,of C.S.I.R.O. Investigations,Fiji Timbers and Their Uses No.17, Department of Forestry, Suva, FijiFiji Forestry Department,1969,Timbers for Flooring A Note on Current & Potential Species,Fiji Timbers and their Uses No.36, 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
|