GHEOMBI (Sindoropsis le-testui)
Nom commercial
Gheombi
Nom scientifique (avec auteur)
Sindoropsis le-testui J.Leon.
Famille
LEGUMINOSAE
Noms communs (pays)
Gheombi (Gabon); Gheombi
Synonymes du nom scientifique (avec auteurs)
Detarium le-testui Pellegr.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 16 to 25 m. The bole is cylindrical, straight and usually unbuttressed or with low buttresses. The trunk diameter attains 70 to 100 cm.
Habitat naturel
Sindoropsis le-testui is found in dense, montane forests as a dominant tree. Occasionally found in small groups in sedimentary basins.
Répartition naturelle
Endemic in Gabon.
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. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Non-septate fibers. Fibers with simple to minutely bordered pits.
-
Vue macroscopique du bois (plan tangentiel)
-
Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is pinkish white to grayish, it has a thickness of 8 to 10 cm. The heartwood is pink brown with a copper tinge ; darkening on exposure, it is clearly demarcated. The silver figure is fine.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
The wood is mostly medium in texture.
Luster
It is reported to be low in luster.
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
No growth stresses are reported in this species.
Teneur en silice
Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.05
Résistance à l'imprégnation
Moderately easy to treat with a partial penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.65
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.72
Retrait tangentiel total (saturé à 0%TH) (%)
6.8
Retrait radial total (saturé à 0%TH) (%)
3.6
Défauts dus au séchage
Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of distortions. Kiln Schedules: The kiln schedule has been tested.
Calendrier de séchage en séchoir recommandé
FR-9
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.9
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)
1169
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
190029
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
620
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
83
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
98
Dureté Janka (latérale) 12%TH (kgf)
651
Dureté Janka (extrémités) 12%TH (kgf)
743
OUVRABILITÉ
Sciage
It is moderately easy to saw.
Coupe de placage de déroulage
Suitable for peeling if treated.
Placage tranche
Suitable for peeling if treated.
Effet d'émoussement
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Usinage
Possible difficulties caused by interlocked grain are reported.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Rather difficult; special tools are needed.
Perçage
Rather difficult; special tools are needed.
Mortaisage
Rather difficult; special tools are needed.
Clouage
Pre-boring is necessary.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
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, common furniture, PLYWOOD AND VENEER, faces, cores, PACKING, heavy packing, pallets
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 ordinaire
- 23 - Handbook of Hardwoods
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
âmes (de placage)
- 27 - Embassy of Brazil in Japan
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_lourd
- 47 - Arvores Brasileiras
Emballage, palettes
- 48 - The strength properties of timbers
Please Provide Information To View Producer Information