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LATI (Amphimas pterocarpoides)
Nom commercial
Lati
Nom scientifique (avec auteur)
Amphimas pterocarpoides Harms
Famille
LEGUMINOSAE
Noms communs (pays)
White oak (Liberia); Va-tue (Liberia); Bliaglu (Liberia); Yaya (Ghana); Asanfran (Ghana); Lati (Côte d`Ivoire); Edzil (Cameroon); Vahn-chu; Va-tue; Ogiya; Mualeluku; Gworluh; Edzil; Bliaglu; Asanfran; Bokanga (Zaire); Muizi (Congo); Edzui (Gabon); Zdzil (Cameroon); Edjin (Cameroon); Lati
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 40 to 50 m, with diameters of 1.3 to 2 m. The bole is 20 to 26 m in length, straight and cylindrical, sometimes irregular, and buttressed.
Habitat naturel
Amphimas pterocarpoides occurs in the rain, transitional and secondary forests.
Répartition naturelle
West Africa, from Equatorial Guinea 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). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and s Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma in thick bands. Axial parenchyma storied. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Axial parenchyma bands un 4 to 10 rays per mm (medium). Rays 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 sapwood is yellowish white. The heartwood is yellowish brown, it is not clearly demarcated. The silver figure is fine.
Index de Teinte (1 = Noir, 7 = Jaune clair)
6
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
The wood is typically coarse in texture.
Luster
Luster is usually low.
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 growth stresses are absent.
Teneur en silice
Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.03
Résistance à l'imprégnation
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.77
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.88
Retrait tangentiel total (saturé à 0%TH) (%)
10.8
Retrait radial total (saturé à 0%TH) (%)
6.4
Calendrier de séchage en séchoir recommandé
FR-11
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.7
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)
1452
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
183523
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
773
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
111
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
112
Dureté Janka (latérale) 12%TH (kgf)
971
Dureté Janka (extrémités) 12%TH (kgf)
1022
OUVRABILITÉ
Sciage
Sawing of this species requires powerful equipment.
Coupe de placage de déroulage
Suitable for slicing.
Placage tranche
Suitable for slicing.
Effet d'émoussement
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Usinage
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Rabotage
Moderately easy; tools must be cautiously sharpened.
Moulurage
Easy; no particular problems.
Perçage
Easy; no particular problems.
Mortaisage
Easy; no particular problems.
Clouage
Pre-boring is necessary.
Collage
Difficult to glue because of high density.
Ponçage
Easy to perform; it gives good results.
Polissage
Needs pre-coating.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, rails, crossarms, crossties, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, Decorative veneer, PACKING, heavy packing, pallets, OTHER AND MUSICAL INSTRUMENTS, moldings
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Rampe
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Crosses
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Traverses de chemin de fer
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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
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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
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
Placage tranché
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_lourd
- 47 - Arvores Brasileiras
Emballage, palettes
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Moulures
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