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 Gluing Grain Heartwood Color Luster Nailing Natural Durability Numerical Data Painting Planing Polishing References Regions of Distribution Resistance to Splitting Response to Hand Tools Sapwood Color Scientific Name Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size		Scientific Name Olinia usambarensis Trade Name Kaavagariet Family Name Oliniaceae Synonyms Olinia macrophylla, Olinia rochetiana, Olinia volkensii Common Names Kaavagariet, Kabideleliet, Kabigeriet, Kaptalonget, Lgering, Merikwa, Muchegi, Mukodo, Musasia, Muta, Muthangira, Mwathathia, Nerekio, Nerrikwa, Nerugua, Ol-gelene, Ol-gireniet, Ol-kirenyi, Olinia, Transvaal olinia, Transvaalhardepeer Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Kenya, South Africa Common Uses Agricultural implements, Boat building (general), Carvings, Flooring: industrial heavy traffic, Furniture, Handles: general, Joinery, Ladders, Mine timbers, Musical instruments, Piling, Plywood, Sporting Goods, Toys, Turnery Heartwood Color Brown Yellow Orange Pale brown Brown Dark brown Sapwood Color White Yellow Paler than heartwood Grain Closed Wavy Interlocked Figure shows patterns other than those generally described Wavy Interlocked Texture Coarse Fine Luster Low Natural Durability Susceptible to insect attack Moderately durable Resistant to powder post beetles Susceptible to attack from termites (Isoptera) Resistant to attack from powder post (Lyctid & Bostrychid) beetles Pinworms (ambrosia beetles) may be present in the felled log Moderately durable Durable Drying Defects Moderate twist/warp Moderate end spitting Tree Identification Bole/stem form is misshapen Bole/stem form is fluted Tree Size Bark width is 10-15 mm Bark width is 5-10 mm Tree height is 10-20 m Tree height is 20-30 m Tree height is 30-40 m Cutting Resistance Cutting Resistance with green wood is difficult Gluing Moderate gluing properties Nailing Possible if prebored Planing Planes well, to a good finish Resistance to Splitting Poor Response to Hand Tools Difficult to machine Painting Satisfactory results Polishing Good results Strength Properties Density (dry weight) = 53-60 lbs/cu. ft Density (dry weight) = 46-52 lbs/cu. ft. Shearing strength (parallel to grain) = medium Modulus of Elasticity (stiffness) = medium Max. crushing strength = high Density (dry weight) = 61-67 lbs/cu. ft Bending strength (MOR) = medium Shrinkage, Tangential = moderate Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Shrinkage, Radial = large Shrinkage, Radial = fairly large Numerical Data Item Green Dry English Bending Strength 9310 14566 psi Density 52 lbs/ft3 Maximum Crushing Strength 6899 9945 psi Shearing Strength 2205 psi Stiffness 1665 1923 1000 psi Weight 51 41 lbs/ft3 Radial Shrinkage 5 % Tangential Shrinkage 8 % Item Green Dry Metric Bending Strength 654 1024 kg/cm2 Density 833 kg/m3 Maximum Crushing Strength 485 699 kg/cm2 Shearing Strength 155 kg/cm2 Stiffness 117 135 1000 kg/cm2 Weight 817 657 kg/m3 Radial Shrinkage 5 % 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 Dale, I.R., Greenway, P.J.,1961,Kenya Trees and Shrubs,Buchanans Kenya Estates Ltd. Nairobi Hatchards London Eggeling, W.J.,1940,Indigenous Trees of Uganda,Govt. Printer Entebbe Uganda Palgrave, K.C.,1977,Trees of Southern Africa,Cape Town South Africa Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,C.T.F.T. Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya