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Bishopwood
Bishopwood (Bischofia javanica)

Family: Euphorbiaceae

Common names: Aidumu, Akagi, Akan, Akayan, Apalang, Aukkyu, Autumn male tree, Ayuni, Bagna, Bangu, Beefwood, Bembuk, Bhillar, Bino, Bintoengan, Bintungan, Biscoptra, Bishofsholz, Bishop wood, Bishopwood, Bisschophout, Bitug, Boaungza, Bogaungsa, Bois de l'eveque, Boke, Bolzuru, Bumbuk, Bunian, Cholavenga, Cingkam, Dampol, Digahongon, Duag, Dueg, Gadog, Gelintungan, Gerinjing, Gerondjing, Gerunjing, Gintoeng, Gintung, Gintungan, Glintungan, Gobra nairul, Govarnellu, Hka-shatawi, Ie, Inggedi, Irum, Java cedar, Jitang, Joki, Kaen, Kainjal, Kalmote, Katan, Kaurem, Kein, Kerindjing, Kerinjing, Keyawe, Ki mahoeng, Ko, Koka, Kola, Korsa, Kot-semla, Kundjing, Kunjing, Kywetho, Legno di vescono, Madera de obispo, Malachithiyan, Malachithiyani, Mandos, Mangatu, Manoko, Maritek, Milachithayam, Modagerri vembu, Na, Nannal, Needlebark, Nhoi, Nili-mara, Nira, Noar, Oa, Oha'a, Oli oli, Panaila, Panasan, Paniala, Perabu, Pogaungsa, Polo, Pun, Sekutin, Sikam, Singkam, Sinong, Taisoh, Tanarem, Taua, Tayok-the, Tepala, Terangan, Term, Thirippu, Thiripu, Thondi, Thrippu, Tingkam, Tingkem, Tingkeum, Toe, Toog, Toogen, Tou, Tuai, Tual, Tuan, Tuel, Tui, Tuir, Tuog, Ulayan, Umba, Uriam, Urian, Urum, Watung, Ye-padauk

Distributed in: Australia, Burma, China, Fiji [Polynesia], Fiji, India, Indonesia, Korea-North, Korea-South, Malaysia, Papua New Guinea, Philippines, Thailand, Vanuatu, Vietnam (Africa, Oceania and S.E. Asia)

Distribution overview: India, Pakistan, Sri Lanka to Australia. Widely distributed Indo-Malayan species extending into the Philippines, Korea, and Polynesia. Common along streams at low and medium altitudes.

Common uses: Agricultural implements, Balusters, Beams, Bedroom suites, Bent Parts, Billiard-cue butts, Boat building (general), Boat building: decking, Boxes and crates, Bridge construction, Building construction, Building materials, Cabin construction, Cabinetmaking, Carvings, Chairs, Charcoal, Chests, Concrete formwork, Construction, Cooperages, Decks, Desks, Dining-room furniture, Domestic flooring, Drawer sides, Excelsior, Factory construction, Fine furniture, Flooring, Form work, Foundation posts, Framing, Fuelwood, Furniture , Furniture components, Furniture squares or stock, Furniture, Hatracks, Heavy construction, Interior construction, Interior trim, Joinery, Joists, Kitchen cabinets, Light construction, Living-room suites, Marine construction, Millwork, Mine timbers, Moldings, Office furniture, Paneling, Parquet flooring, Piling, Plywood, Poles, Posts, Pulp/Paper products, Railroad ties, Roofing, Structural work, Tool handles, Turnery

Environment profile: Status unknown in many of its growth areas

Tree size: Trunk diameter is 200-250 cm

Colors: the heart isRed, Reddish brownand the sapwoodPinkish, White to yellow.The grain isWavy, the textureMedium coarse to coarseand the lusterSlightly lustrous

Natural durability: Susceptible to insect attack, Susceptible to marine borer attack

Odor: No specific smell or taste

LightInduced Color Change: Darker

Kiln Schedules: Drying (speed) is fast

Kiln Drying Rate: Naturally dries slowly

Drying Defects: Slight surface checking, Splitting

Ease of Drying: Slowly

Tree Identification: Bole/stem form is straight

Comments: A lesser-known-species from South-east Asia. General finishing qualities are rated as good

Cutting Resistance: Cutting Resistance with green wood is easy

Gluing: Good properties

Mortising: good

Moulding: Poor to Very Poor Oulding characteristics are rated as good.

Movement in Service: Poor to Very Poor Oulding characteristics are rated as good.

Planing: Poor to Very Poor

Resistance to Impregnation: Sapwood is permeable

Response to hand tools: Easy to machine

Sanding: Good sanding qualities

Veneering qualities: Good gluing qualities, There is slight to moderate drying degrade and the potential for buckles and splits

Turning: Good results

Polishing: Smooth finish; Staining: Stains well ;

  • Numerical data Metric
  • Numerical data English
  • Strength properties
  • References
Item Green Dry Metric
Specific Gravity 0,51 0,63
Density 689 kg/m3
Bending Strength 534 1020 kg/cm2
Crushing Strength 73 98 kg/cm2
Hardness 693 kg
Impact Strength 58 68 cm
Shearing Strength 152 kg/cm2
Stiffness 81 112 1000 kg/cm2
Tangential Shrinkage 8 %
Radial Shrinkage 3 %
Weight 817 705 kg/m3
Maximum Load cm-kg/cm3
Toughness 169 cm-kg
Static Bending 321 538 kg/cm2
Item Green Dry English
Bending Strength 7603 14515 psi
Crushing Strength 1051 1394 psi
Density 43 lbs/ft3
Hardness 1529 lbs
Impact Strength 23 27 inches
Maximum Crushing Strength 3665 6928 psi
Shearing Strength 2162 psi
Static Bending 4572 7652 psi
Stiffness 1160 1595 1000 psi
Toughness 147 inch-lbs
Specific Gravity 0.51 0.63
Weight 51 44 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 8 %
Volumetric Shrinkage 12 %

Density (dry weight) = 38-45 lbs/cu. ft. 0
Max. crushing strength = medium 0
Modulus of Elasticity (stiffness) = low 0
Density (dry weight) = 46-52 lbs/cu. ft. 0
Shrinkage, Radial = moderate 1
Bending strength (MOR) = medium 1
Dnesity (dry wieght) = 53-60 lbs/cu. ft.
Shrinkage, Radial = small
Bending strength (MOR) = low
Shearing strength (parallel to grain) = low
Hardness (side grain) = soft
Hardness (side grain) = medium
Density (dry weight) = 31-37 lbs/cu. ft.
Shrinkage, Volumetric = very small
Shrinkage, Radial = very small
Modulus of Elasticity (stiffness) = very low
Toughness-Hammer drop (Impact Strength) = very low
Toughness-Hammer drop (Impact Strength) = low
Shrinkage, Radial = fairly large
Shearing strength (parallel to grain) = medium
Max. crushing strength = low
Shearing strength (parallel to grain) = high
Resists denting and marring
Modulus of Elasticity (stiffness) = medium
Heavy
Hardness = medium
Hardness (side grain) = hard
Density = high
Compression strength (parallel to grain) = high
Bending strength (MOR) = very low

Aguilar, L.,1941,Relative Durability of Untreated Philippine woods,The Philippine Journal of Forestry 4(3) pp247-56Alston, 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.6Alston, A.S.,1982,Timbers of Fiji: Properties and potential uses,Fiji Forestry Department, SuvaAmerica, W.M., Meniado, J.A.,1975,Tuai (Bischofia javanica) lamog (Planchonia spectabilis) and toog,(Petersianthus quadrialatus,For. Prod. Res. & Ind. Dev. Comm. Philippines for pindecom Tech. Note,No.157Banks, C.H., Schoeman, J.P., Otto, K.P.,1977,The Mechanical Properties of Timbers with particular reference to South,Africa,South African Forestry Research Institute Bulletin,(Ed.,Schoeman, J.P. 1973 & Otto K.P. 1976,No.48Bolza, E. and N. H. Kloot.1966.The Mechanical Properties of 81 New Guniea Timbers.Technological Paper No. 41.Division of Forest Products, Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia.Bolza, 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.,62Bolza, E.,1975,Properties and Uses of 175 Timber Species from Papua New Guinea and West,Irian,C.S.I.R.O. Div. Building Research Report,no.34Bourdillon, T.F.,1908,The Forest Trees of Travancore,Travancore Government PressBurgess, P.F.,1966,Timbers of Sabah,Sabah Forest Record, no.6Cause, M.L.; Rudder, E.J. and Kynaston, W.T.,1989,Queensland Timbers Their Nomenclature, Density, and Lyctid Susceptability,Queensland Department of Forestry, Technical Pamplet No.2Cause, M.L., Et al,1974,The Nomenclature, Density and Lyctus - Susceptibility of Queensland,Timbers,Queensland Forestry Department Pamphlet 13Chudnoff, M.,1984,Tropical Timbers of the World,U.S.A. Department of Agriculture, Forest Service, Forest Products,Laboratory, Madison.Desch, H. E. 1957. Manual of Malayan Timbers. The Malayan Forester, 28(30):315-318.Desch, H.E.,1954,Manual of Malayan Timbers (2 vols,Malayan Forest Records,no.15E.H. Walker,1954,Important Trees of the Ryukyu Islands,United States Civil Administration of the Ryukyu Islands Special Bulletin,No. 3Eddowes, P.J. 1977. Commercial Timbers of Papua New Guinea - Their Properties and Uses. Forest Products Research Center, Office of Forests, Department of Primary Industry, Papua New Guinea.Eddowes, P.J.,1977,Commercial Timbers of Papua New Guinea: Their Properties and Uses,Hebano Press, Port Moresby, Papua New GuineaFiji 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,1970,The Properties and Potential uses of Koka (Bischofia javanica,Fiji Forestry Department, Suva. Fiji timbers and their uses No.46Fiji Department of Forestry,1972,Guide to the use of local timbers,Fiji Forestry Department, Suva. Fiji timbers and their uses No.55Fiji Forestry Department,1981,The Properties and Uses of 43 Indigenous and Exotic Timbers,Fiji Forestry Department, Fiji Timbers and their Uses No.71Floresca, A.R., Rocafort, J.E.,1966,Shrinkage of Philippine Woods,Philippine Journal of Forestry 22(1-4) pp45-57Gamble, J.S.,1902,A Manual of Indian Timbers,Sampson Low, Marston & Co. LondonGowers, S.,1976,Some Common Trees of the New Hebrides and Their Vernacular Names,New Hebrides Department of Agriculture, Forestry SectionGuha, S.R.D., Pant, P.C.,1965,Pulping of Bischofia jaranucar Blume,Indian Pulp and Paper 19(12) pp753-6Howard, A.L.,1948,A Manual of Timbers of the World.,Macmillan & Co. Ltd. London 3rd ed.Keating, 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,1Kloot, N. H. and E. Bolza.1961.Properties of Timbers Imported into Australia.Technological Paper No. 12.Division of Forest Products, Commonwealth Scientific and Industrial Organization, Melbourne, Australia.Kraemer, J.H.,1951,Trees of the Western Pacific Region,West Lafayette, Indiana U.S.A.Lauricio, F. M., Bellosillo, S. B., The Mechanical and Related Properties of Philippine Woods, The Lumberman, 12(5):A-H.Limaye, V.D. 1954. Grouping of Indian Timbers and their Properties, Uses and Suitability. Indian Forest Records, New Series. Timber Mechanics, Vol. 1, No. 2, Forest Research Institute, Dehra Dun, India.Limaye, V.D. and B.R. Sen. 1956. Weights and Specific Gravities of Indian Woods. Indian Forest Records (New Series). Timber Mechanics. Volume 1 No. 4. Manager of Publications (Publisher, Delhi.Limaye, V.D.,1933,The Physical and Mechanical Properties of woods grown in India (Third,Interim Report on Project 1,Indian Forest Records,18(10,pp1-70Limaye, V.D.,1946,Safe Working Stresses for Indian Timbers,Indian Forest Records (N.S. Utilisation,4(1,pp1-31Limaye, V.D.,1957,Grouping of Indian Timbers and Their Properties, Uses and Suitability.,Indian Forest Records (N.S. Timber Mechanics Vol.1 No.2)Nazma,1981,A handbook of Kerala Timbers,Kerala Forest Research Institute Research Report, No.9Nicolas, P.M., Tadena, F.G.,1965,Kraft pulping of Tuai (Bischoffia javanica Blume,Philippine Forestry Journal 21(1/40 pp109-15Osborne, L.D.,1970,Decay resistance of South-West Pacific rain forest timbers,C.S.I.R.O.,Div. for Prod., Tech. paper No.56Pearson, R.S., Brown, H.P.,1932,Commercial Timbers of India,Govt. Printer Calcutta,2 volsRawat, B.S., Rawat, N.S.,1960,Physical and Mechanical properties of woods tested at the Forest Research,Institute, Dehra Dun Report XI,Indian Forestry Records (NS) Timber Mechanics 1(12)Reyes, L.J.,1938,Philippine Woods,Commonwealth of the Philippines Department of Agriculture and Commerce,Technical Bulletin,No.7Simpson, W.T. and J.A. Sagoe. 1991. Relative Drying Times of 650 Tropical Woods : Estimation by Green Moisture Content, Specific Gravity, and Green Weight Density.United States Department of Agriculture (USDA, Forest Service, General Technical Report FPL-GTR-71, Forest Products Laboratory, Madison, Wisconsin.Streets, R.J.,1962,Exotic Forest Trees in the British Commonwealth,Clarendon Press OxfordTamolang, F.N., Martawijaya, A., Kartasujana, I., Kadir, K., Parwira, S.,1992,Indonesian Wood Atlas Volume II,Department of Forestry, Agency for Forestry Research and Development,,Bogor-IndonesiaTewari, M.C., Jain, J.C.,1980,Utilization of Secondary Species,Journal of the National Building Organization 25(2) pp1-6Thomas, A.V.,1935,Notes on some timbers from Cameron highlands,Malayan Forester 4(4) pp188-96Varian, H.F., Gallardo, A.C.,1940,Notes on the susceptibility to insect attack of Philippine woods,Philippine Journal of forestry 3(3) pp347-78WCMC. 1992. Conservation Status Listing - Trees and Timbers of the World. World Conservation Monitoring Center-Plants Programme, Cambridge, CB3 ODL, United Kingdom.Whitmore, T.C. (Ed.,1972,Tree Flora of Malaya A Manual for Foresters Volume 1,Forest Department Ministry of Agriculture and Lands MalaysiaWyatt-Smith, J.,1979,Pocket Checklist of Timber Trees,Malayan Forest Records No.17
*Come interpretare i dati (manleva su eventuali imprecisioni)