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Common Names
Common Uses
Countries of Distribution
Cutting Resistance
Drying Defects
Ease of Drying
Family Name
Gluing
Grain
Heartwood Color
Luster
Movement in Service
Nailing
Natural Durability
Natural Growth Defects
Numerical Data
Planing
Polishing
References
Regions of Distribution
Resistance to Impregnation
Response to Hand Tools
Sapwood Color
Scientific Name
Strength Properties
Synonyms
Texture
Trade Name
Tree Identification
Tree Size
Turning
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Synonyms
Schrebera macrantha
Common Names
Mulere, Munalibo, Nawelamu, Ndela, Pau goiaba, Uhona
Regions of Distribution
Africa
Countries of Distribution
[VIEW MAP]
Uganda
Common Uses
Agricultural implements, Beehives, Cabinetmaking, Flooring: commercial heavy traffic, Furniture, Handles: general, Heavy construction, Joinery, Ladders, Mathematical instruments, Mine timbers, Plywood, Poles, Tool handles, Toys, Turnery
Heartwood Color
| Brown |
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| Green/grey |
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| Yellow |
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| Orange |
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| Red |
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| Yellow to golden-yellow to orange |
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| Pale red to pink |
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| Greenish to greyish |
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Sapwood Color
| Red |
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| Brown |
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| Yellow |
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| Paler than heartwood |
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Grain
| Even |
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| Closed |
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| Figure |
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| Straight |
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| Wavy |
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| Growth rings (figure) |
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| Distinct (figure) |
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| Wavy |
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| Straight |
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| Distinct figure |
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| Clear growth rings (figure) |
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Texture
Luster
Natural Growth Defects
Natural Durability
| Non-durable |
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| Perishable |
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| Susceptible to insect attack |
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| Non-resistant to powder post beetles |
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| Non-resistant to termites |
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| Non-resistant to marine borers |
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| Susceptible to attack from powder post (Lyctid & Bostrychid) beetles |
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| Durable |
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Drying Defects
Ease of Drying
Tree Identification
| Bole/stem form is straight |
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| Bole/stem form is misshapen |
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| Bole/stem form is cylindrical |
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Tree Size
| Tree height is 30-40 m |
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| Tree height is 20-30 m |
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| Tree height is 10-20 m |
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| Bole length is 10-20 m |
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| Bole length is 0-10 m |
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| Trunk diameter is 100-150 cm |
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Cutting Resistance
| Easy to saw |
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| Cutting Resistance with green wood is easy |
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| Cutting Resistance with dry wood is easy |
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Gluing
| Fairly Easy to Very Easy |
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| Easy to glue |
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Movement in Service
Nailing
| Fairly Easy to Very Easy |
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| Possible if prebored |
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Planing
Resistance to Impregnation
| Resistant heartwood |
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| Resistant sapwood |
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| Heartwood is moderately resistant |
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Response to Hand Tools
| Fairly Difficult to Difficult to Work |
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Turning
Polishing
Strength Properties
| Shrinkage, Tangential = small |
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| Shrinkage, Radial = moderate |
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| Shrinkage, Tangential = moderate |
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| Shrinkage, Tangential = large |
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| Shrinkage, Radial = very small |
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| Shrinkage, Radial = small |
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| Shrinkage, Radial = fairly large |
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| Modulus of Elasticity (stiffness) = medium |
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| Max. crushing strength = medium |
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| Bending strength (MOR) = medium |
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| Shrinkage, Tangential = very small |
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| Shrinkage, Tangential = fairly large |
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| Shrinkage, Radial = large |
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| Shearing strength (parallel to grain) = medium |
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| Shearing strength (parallel to grain) = low |
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| Max. crushing strength = high |
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| Density (dry weight) = 53-60 lbs/cu. ft |
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| Density (dry weight) = 46-52 lbs/cu. ft. |
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| Bending strength (MOR) = high |
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Numerical Data
| Item | Green | Dry | English |
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| Bending Strength | 10732 | 16695 | psi |
| Density | | 51 | lbs/ft3 |
| Maximum Crushing Strength | 4911 | 7579 | psi |
| Shearing Strength | | 1883 | psi |
| Stiffness | 1665 | 1923 | 1000 psi |
| Weight | 50 | 40 | lbs/ft3 |
| Radial Shrinkage | 4 | | % |
| Tangential Shrinkage | 7 | | % |
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| Item | Green | Dry | Metric |
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| Bending Strength | 754 | 1173 | kg/cm2 |
| Density | | 817 | kg/m3 |
| Maximum Crushing Strength | 345 | 532 | kg/cm2 |
| Shearing Strength | | 132 | kg/cm2 |
| Stiffness | 117 | 135 | 1000 kg/cm2 |
| Weight | 801 | 641 | kg/m3 |
| Radial Shrinkage | 4 | | % |
References
Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research
Tack, C.H.,1969,Uganda Timbers,Govt. Printer Uganda
Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7
Uganda Forest Department,1969,The Shrinkage of Some Ugandan Timbers,Uganda Forestry Department Timber Leaflet,No.47
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