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EBIARA (Berlinia confusa)
Nom commercial
Ebiara
Nom scientifique (avec auteur)
Berlinia confusa Hoyle
Famille
LEGUMINOSAE
Noms communs (pays)
M'possa (Zaire); M'possa (Congo); Essabem (Cameroon); M'possa (Angola); M`possa (Zaire); Berlinia (United Kingdom); Sarkpei (Sierra Leone); Ekpogoi (Nigeria); Berlinia (Germany); Ebiara (Gabon); Pocouli (Côte d`Ivoire); Melegba (Côte d`Ivoire); M`possa (Congo); Abem (Cameroon)
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 32 to 43 m. The bole is often defective and medium sized, sometimes fluted with low buttresses. The trunk diameter attains 100 up to 170 cm.
Habitat naturel
Berlinia confusa is found in various forest types like savanna formations, marshy localities, or dense forests.
Répartition naturelle
West Africa and reaching to the Democratic Republic of the Congo.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma thick lozenge-aliform. Axial parenchyma aliform. Occasionally axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per pa Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 2 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is whitish to pinkish, it has a thickness of 10 to 15 cm. The heartwood is pink brown to dark red brown with dark brown or purple streaks, it is clearly demarcated.
Index de Teinte (1 = Noir, 7 = Jaune clair)
6
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The texture is typically medium to coarse.
Durabilité naturelle
Moderately durable to decay. Without preservative treatment, this species can be used only under risk of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Moderately resistant to termites attack
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
3
Tensions internes de croissance
Residual stresses are reported to be absent.
Teneur en silice
Silica Content: Negligible contents of silica are found in timber of this species. Amounts over 0.05% may affect the wood processing. Silica Value: 0.01
Résistance à l'imprégnation
Difficult to treat with only a low penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.66
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.74
Retrait tangentiel total (saturé à 0%TH) (%)
9.2
Retrait radial total (saturé à 0%TH) (%)
5.0
Défauts dus au séchage
Ease of Drying: Air seasoning is moderately difficult but with little or no degrade. Boards of 13 mm thick take respectively 3.5 months to air dry. Drying Defects: Risk of end splitting and surface checking. Kiln Schedules: Kiln drying gives good results.
Calendrier de séchage en séchoir recommandé
FR-6
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.8
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1005
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
151695
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
585
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
77
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
103
Dureté Janka (latérale) 12%TH (kgf)
681
Dureté Janka (extrémités) 12%TH (kgf)
771
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Suitable for slicing, also suitable for peeling if treated.
Placage tranche
Suitable for slicing, also suitable for peeling if treated.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Machining of this species is reportedly easy.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Tournage
30
Perçage
Moderately easy; tools must be cautiously sharpened.
Mortaisage
Moderately easy; tools must be cautiously sharpened.
Clouage
Pre-boring is necessary.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Easy to perform; it gives good results.
Polissage
Needs pre-coating.
Cintrage à la vapeur
This species can be used for steam bending.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, shutter boards, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Solives
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Planchers
- 14 - Handbook of Hardwoods
Parquets
- 15 - Empire Timbers
Cadres
- 16 - Woods of the World
Marches
- 17 - Tree Conservation Database
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
Accessoires en bois
- 19 - Silica in Timbers
Volets
- 20 - Prospect: The wood database
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Meubles luxe
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Placage tranché
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Tournage
- 30 - Embassy of Honduras in Japan
Ornements
- 31 - Embassy of Colombia in Japan
Ornements
- 32 - Embassy of Cote d`Ivoire in Japan
Manches de couverts
- 33 - Embassy of Gabon in Japan
Formes à chaussures
- 34 - Embassy of Indonesia in Japan
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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