RAIN TREE (Samanea saman)
Nom commercial
Rain tree
Nom scientifique (avec auteur)
Samanea saman (Jacq.) Merril
Famille
Lequminosae
Noms communs (pays)
Bordao de velho (Brazil); Ohai (Hawaii); Saman (Mexico); Rain tree (Fiji); Kihudjau, Trembesi (India); Kampoo (Thailand); Monky Pod (Philippines)
Synonymes du nom scientifique (avec auteurs)
Pithecolobium saman Benth
DESCRIPTION DE L'ARBRE
Description botanique
Evergreen, 20~30m tall. Usually has a short, massive trunk which divides into wide spreading branches.Tree may have originated from Venezuela.
Habitat naturel
Fast-growing species,prefers low-lying areas,gregarious
Répartition naturelle
The West lndies, Central and Sauth America. Planted Hawaii,Fiji,Pacihic area, Sauth-east Asia
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Simple perforation plates. Vestured pits. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits large, 10 micras or more. Vessels per mm2 less than 6 (rare). Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Occasionally rays more than 10 per mm (abundant). Fibers with simple to minutely bordered pits. Larger rays more than 4 seriate. Ray width 1 to 3 cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent).
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
Heartwood is a lustrous pale brown to Pinkish -brown colour with dark brown streak. Sapwood is distinct, straw coloured, 60mm or more wide.
Index de Teinte (1 = Noir, 7 = Jaune clair)
3
Grain
The grain is interlocked often quite severely.
Texture
Texture is intermediate, although vessels are conspicuous because of surrounding soft tissue.
Luster
Lustrous.
Durabilité naturelle
Durability rating variable reported to be. Durable under water. Heartwood reported to be resistant to termites, Liable to blue-stain. Heartwood is not durable. Sapwood highly susceptible to Lyctus attack
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
6
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
4.60
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.53
Retrait tangentiel total (saturé à 0%TH) (%)
1.8
Retrait radial total (saturé à 0%TH) (%)
1.0
Défauts dus au séchage
Ease of Drying: Sarosaro dries rapidly but even under miled conditions backsawn stock develops surface checks, most of which are shallow enough in 25mm material to be removed by machining. Some boards wrap slightly, but final steaming is not recommended as checks reopen. Kiln Schedules: about 6 days are required to kiln dry from green to 12%m.c. reduced to 3 1/2 day of preliminary air drying to 25% is under taken. A 24 hour high humidity trearment shuold follow kiln drying. 50mm stoke; Prelimnary air drying to 20% m.c. is recommmended. F
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)
450
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
79000
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
300
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
90
OUVRABILITÉ
Sciage
Tension wood may be encountered causing excessive springing and fibrous sawn surfaces packed with sawdust.
Coupe de placage de déroulage
logs selected for relatively straight grain and good figure could yield high quality sliced veneer.
Placage tranche
logs selected for relatively straight grain and good figure could yield high quality sliced veneer.
Usinage
Despite the relatively low density, air dry machining properties are below average. Radial surfaces suffer some moderate to rough chipping because of interlocked grain. Soft tissue surrounding the vessels tend to give rough radial surfaces.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, beams, boards, frames, panelling, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, cores, SPORTS, bowling polo balls, OTHER AND MUSICAL INSTRUMENTS, handicrafts
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Cadres
- 16 - Woods of the World
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
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
Faces (de placage)
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
âmes (de placage)
- 27 - Embassy of Brazil in Japan
Quilles_ bowling
- 40 - Internet
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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