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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. Blunting Effect Boring Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Grain Heartwood Color Kiln Drying Rate Luster Mortising Moulding Movement in Service Nailing Natural Durability Numerical Data Planing Polishing References Regions of Distribution Resistance to Impregnation Resistance to Splitting Response to Hand Tools Sapwood Color Scientific Name Steam Bending Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size Turning Varnishing Scientific Name Teclea nobilis Trade Name Achacha Family Name Rutaceae Synonyms Toddalia nobilis Common Names Achacha, Achacho, Datai, Datsi, Ejoroi, Ekude, Gurio, Kilongolo, Koriot, Kurionde, Kuriondet, Lutati, Luzu, Midimu, Mubio, Mudzo, Mugangwe, Munderendu, Mutaro, Muzo, Nakamole, Nzo, Ol-gelai, Omudati, Oya, Small fruited teclea Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Kenya, Tanzania, Uganda, Zimbabwe Common Uses Agricultural implements, Boat building (general), Cabinetmaking, Carvings, Flooring: industrial heavy traffic, Furniture, Golf club heads, Handles: general, Heavy construction, Joinery, Ladders, Mine timbers, Piling, Sporting Goods, Tool handles, Toys, Turnery, Vats, Vehicle parts, Walking sticks Heartwood Color Red Brown Purple Black Pink White to cream Yellow to golden-yellow to orange Sapwood Color White Yellow Pink Paler than heartwood Grain Even Straight Straight Texture Medium Fine Luster Low Natural Durability Durable Very durable Resistant to marine borers Non-durable Moderately durable Susceptible to insect attack Perishable Non-resistant to termites Non-resistant to powder post beetles Susceptible to marine borer attack Moderately resistant to termite (Isoptera) attack Drying Defects Splitting Checking Distortion Ease of Drying Rapidly Kiln Drying Rate Naturally dries quickly Rapid Drying rate is fairly rapid to fast Tree Identification Bole/stem form is misshapen Tree Size Tree height is 20-30 m Bole length is 10-20 m Tree height is 30-40 m Sapwood width is 5-10 cm Sapwood width is 10-15 cm Tree height is 10-20 m Tree height is 0-10 m Sapwood width is 15-20 cm Trunk diameter is 100-150 cm Blunting Effect High to severe Boring Fairly easy to very easy Cutting Resistance Fairly Difficult to Very Difficult to saw Mortising Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Moulding Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Movement in Service Fair to Good Stability - Medium Movement Nailing Fairly Difficult to Very Difficult Poor to Very Poor Results Pre-Boring Recommended Planing Very Good to Excellent Results Fair to Good Results Planes well, to a good finish Resistance to Impregnation Resistant heartwood Resistant sapwood Resistance to Splitting Poor Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Difficult to machine Turning Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Good results Easy to turn Steam Bending Good Polishing Fair to Good Results Good results Varnishing Good results Strength Properties Density (dry weight) = 53-60 lbs/cu. ft Density (dry weight) = 46-52 lbs/cu. ft. Bending strength (MOR) = high Shrinkage, Radial = small Shearing strength (parallel to grain) = medium Modulus of Elasticity (stiffness) = high Max. crushing strength = high Shrinkage, Tangential = small Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Numerical Data Item Green Dry English Bending Strength 13576 20956 psi Density 51 lbs/ft3 Maximum Crushing Strength 6899 9945 psi Shearing Strength 2205 psi Stiffness 2167 2494 1000 psi Weight 50 40 lbs/ft3 Radial Shrinkage 3 % 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 155 kg/cm2 Stiffness 152 175 1000 kg/cm2 Weight 801 641 kg/m3 Radial Shrinkage 3 % 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 Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23 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,1954,The Mechanical Properties of some Ugandan Timbers,Uganda Forest Department Timber Leaflet,No.1 Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya