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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. Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Grain Heartwood Color Luster Natural Durability Numerical Data Planing References Regions of Distribution Resistance to Impregnation Resistance to Splitting Response to Hand Tools Sapwood Color Scientific Name Strength Properties Synonyms Texture Trade Name Tree Identification Tree Size Turning Scientific Name Dombeya goetzenii Trade Name Bordet Family Name Sterculiaceae Synonyms Dombeya runsoroensis Common Names Bordet, Boroa, Boroguet, Borowa, Borowetamoi, Chikole, Gabaluwa, Kenya ash, Mukao, Mukeo, Ol subukian, Omukole, Poromet, Sibibuet, Sibukuet, Silibuet, Siligwet, Silip, Silipehet Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Kenya, Uganda Common Uses Agricultural implements, Boat building (general), Cabinetmaking, Flooring, Furniture, Handles: general, Joinery, Ladders, Piling, Sporting Goods, Tool handles Heartwood Color Pale brown White to cream Sapwood Color White Yellow Same as heartwood Grain Even Straight Straight Texture Medium Fine Fine Fine to medium Luster Medium Natural Durability Perishable Non-durable Non durable Moderately durable Susceptible to marine borer attack Susceptible to attack from termites (Isoptera) Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Durable Drying Defects Moderate surface checking Ease of Drying Fairly Easy Tree Identification Bole/stem form is unknown Tree Size Bole length is 0-10 m Tree height is 0-10 m Tree height is 10-20 m Tree height is 30-40 m Cutting Resistance Easy to saw Cutting Resistance with green wood is easy Planing Easy to plane Resistance to Impregnation Sapwood is moderately resistant Heartwood is moderately resistant Resistance to Splitting Good Response to Hand Tools Easy to Work Easy to machine Moderate working qualities Turning Poor results Strength Properties Density (dry weight) = 38-45 lbs/cu. ft. Bending strength (MOR) = medium Max. crushing strength = high Density (dry weight) = 46-52 lbs/cu. ft. Shearing strength (parallel to grain) = medium Density (dry weight) = 31-37 lbs/cu. ft. Density (dry weight) = 23-30 lbs/cu. ft. Modulus of Elasticity (stiffness) = medium Max. crushing strength = medium Shrinkage, Tangential = moderate Shrinkage, Tangential = fairly large Shrinkage, Radial = small Shrinkage, Radial = moderate Shrinkage, Radial = fairly large Hardness (side grain) = soft Hardness (side grain) = medium Shrinkage, Tangential = small Shrinkage, Tangential = large Shrinkage, Radial = large Shearing strength (parallel to grain) = low Modulus of Elasticity (stiffness) = low Numerical Data Item Green Dry English Bending Strength 9310 14566 psi Density 38 lbs/ft3 Hardness 1326 lbs Maximum Crushing Strength 5905 8762 psi Shearing Strength 2076 psi Stiffness 1589 1835 1000 psi Weight 37 29 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 8 % Item Green Dry Metric Bending Strength 654 1024 kg/cm2 Density 608 kg/m3 Hardness 601 kg Maximum Crushing Strength 415 616 kg/cm2 Shearing Strength 145 kg/cm2 Stiffness 111 129 1000 kg/cm2 Weight 592 464 kg/m3 Radial Shrinkage 4 % References Bengough, C.C.,1971,Commercial Timbers of Kenya,Ministry of Natural Resources Forest Department, Kenya 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 Patterson, D.N.,1963,The strength of Kenya timbers, their derivation and application,Kenya Forestry Department Research Bulletin,No.23 Tack, C.H.,1958,The Strength Properties of some Uganda Timbers,Uganda Forest Department Bulletin No. 5 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 Wimbush, S.H.,1950,Catalogue of Kenya Timbers,Govt. Printer Nairobi Kenya