EFFEU (Hannoa klaineana)
Nom commercial
Effeu
Nom scientifique (avec auteur)
Hannoa klaineana Pierre
Famille
SIMAROUBACEAE
Noms communs (pays)
Uguekpokin (Nigeria); Igbo (Nigeria); Effeu (Côte d`Ivoire); Nkourangueuk (Gabon); Etek (Equatorial Guinea); Babolo (Central African Republic); Nom ozek (Cameroon); Zauh; Yaglu; Uguekpokin; Tetesemopu; Orisi; Oghulu; Ogbess; Ofo; Nkube; Neube; Ikpoki; Igigun; Igbo; Hutro-hu; Hotoroho; Hotoro-hotoro; Hete bake; Futro-futro; Futoro-futoro; Futia; Fentia; Effeu; Effen; Effe; Bobet; Ati; Ahiefe; Aboho; Abo
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 45 m. The bole is straight, cylindrical, sometimes slightly buttressed, up to 26 m in length. The trunk diameter attains 70 to 100 cm.
Habitat naturel
Hannoa klaineana is common in evergreen, deciduous, fringing and secondary forests.
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). Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel Axial parenchyma confluent. Axial parenchyma in continuous tangential lines or fine bands. Occasionally axial parenchyma storied. Crystal sand in axial parenchyma cells. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 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 heartwood is white or yellow-white, it is not demarcated. Some fine striations are present on quarter-cut face.
Grain
Straight or interlocked, sometimes with an influence on further processing operations. Interlocked grain is high but not frequent.
Texture
The wood is typically coarse in texture.
Durabilité naturelle
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Sensible to termites attack.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
5
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.29
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.30
Retrait tangentiel total (saturé à 0%TH) (%)
5.7
Retrait radial total (saturé à 0%TH) (%)
3.3
Défauts dus au séchage
Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed. Drying Defects: Risks of checks, distortions and collapse. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.7
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
311
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
48361
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
172
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
15
Dureté Janka (latérale) 12%TH (kgf)
108
Dureté Janka (extrémités) 12%TH (kgf)
177
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Possible difficulties caused by interlocked grain are reported.
Rabotage
Easy; no particular problems.
Moulurage
Easy; no particular problems.
Tournage
30
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
Easy to perform but low nails holding.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Particular care is needed to avoid woolly aspect of the surface.
Polissage
Needs pre-coating.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, flooring, fittings, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, cores, TURNING, SPORTS, TOOLS, agricultural tools, PACKING, food container, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches, particleboard, paper
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planchers
- 14 - Handbook of Hardwoods
Accessoires en bois
- 19 - Silica in Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Armoires
- 24 - Empire Timbers
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
âmes (de placage)
- 27 - Embassy of Brazil in Japan
Tournage
- 30 - Embassy of Honduras in Japan
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Outils_agric
- 44 - Atlas of Peruvian Woods
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Contenants_alim
- 49 - Mechanical properties of certain tropical woods
CONTENANTS
- 50 - Properties of imported tropical woods
Tonnellerie
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Allumette
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Panneaux de particules
- 80 - Estudio Integral de la Madera para Construcción
Papier
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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