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TATAJUBA (Bagassa tiliaefolia)
Nom commercial
Tatajuba
Nom scientifique (avec auteur)
Bagassa tiliaefolia
Famille
MORACEAE
Noms communs (pays)
Cow Wood; Bagasse
DESCRIPTION DE L'ARBRE
Description botanique
The trees of this genus are reported to be dominant, with trunk diameters ranging from 75 to 95 cm. They develop well-formed and cylindrical boles. It presents abundant sticky white latex.
Habitat naturel
Bagassa species are reported to occur in terra firme primary or secondary forests in the Guyanas and the Brazilian Amazon.
Répartition naturelle
This species occurs in Guyana and the northern South America.
Usages non ligneux
The bark contains large quantities of a sweet, sticky latex.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Occasionally intervessel pits large, 10 micras o Occasionally axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in non-chambered axial parenchyma cells. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is differentiated. The heartwood is yellow brown, the timber gets darker after exposure.
Index de Teinte (1 = Noir, 7 = Jaune clair)
3
Grain
It is frequently slightly interlocked.
Texture
This species is reported to have a medium to coarse texture.
Luster
This wood is commonly of high luster.
Durabilité naturelle
It is very resistant to decay and resistant against termites and dry wood insects.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
1
Résistance à l'imprégnation
This wood is resistant to preservative treatment.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.72
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.81
Retrait tangentiel total (saturé à 0%TH) (%)
5.3
Retrait radial total (saturé à 0%TH) (%)
3.8
Défauts dus au séchage
Ease of Drying: Slow drying rates give satisfactory results.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.4
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1446
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
176667
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
756
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
57
OUVRABILITÉ
Sciage
Sawing of this species is easy.
Finissage
It has a good finishing.
Cintrage à la vapeur
Steam bending of this species is reportedly easy.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, HOUSING GENERAL, beams, joists, flooring, fittings, FURNITURE AND CABINETS, cabinets, SPORTS, NAVAL CONSTRUCTION, boat deck, OTHER AND MUSICAL INSTRUMENTS, moldings
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
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
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
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires_ponts
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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