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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.

En savoir plus

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.

  • Vue macroscopique du bois (plan radiale)
  • Vue microscopique d'une section transversale du bois

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

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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