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P.N.G SWAMP BOX (Lophostemon confertus)
Nom commercial
P.N.G swamp box
Nom scientifique (avec auteur)
Lophostemon confertus (R. Br.) Peter G. Wilson & Waterhouse
Famille
MYRTACEAE
Noms communs (pays)
Pelawan; Selunsur (Sarawak); Bruh box (Australia)
Synonymes du nom scientifique (avec auteurs)
Tristania conferta R. Br.
DESCRIPTION DE L'ARBRE
Description botanique
It is a small to medium-sized tree up to 40 m tall. The bole is straight, occasionally crooked, up to 100 cm in diameter.
Habitat naturel
Lophostemon trees occur as mature residual trees in lowland rain forests, and commonly extended to wet and moist open forest, usually along water courses.
Existence de plantations?
This species is reported to be planted in the tropics outside its origin, including Indonesia and Java.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Vessels in radial multiples of 4 or more common. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally vessels with colored deposits. Vestured pits. Occasionally vessels per mm2 more than 20. Vessels per mm2 mor Occasionally axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Two cells per parenchyma strand. 3 to 4 cells per parenchy 4 to 10 rays per mm (medium). Rays more than 10 per mm (abundant). Rays exclusively uniseriate. 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
Odeur
Seasoned wood has no characteristic odor or taste.
Teinte
The heartwood is red, pink-brown or red-brown, turning grayish upon exposure, clearly demarcated from the pale brown or pale pink sapwood.
Index de Teinte (1 = Noir, 7 = Jaune clair)
4
Grain
The grain is interlocked, sometimes wavy.
Texture
The wood texture is frequently fine, occasionally medium.
Durabilité naturelle
It is fairly durable to durable in contact with the ground or exposed to weather. It is resistant to termite and marine borer attack.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
2
Résistance à l'imprégnation
The sapwood is reported to be easy to preserve but the heartwood is untreatable.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.80
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.91
Retrait tangentiel total (saturé à 0%TH) (%)
10.9
Retrait radial total (saturé à 0%TH) (%)
5.5
Défauts dus au séchage
Ease of Drying: Boards of 13 mm and 38 mm thick take respectively 2 months and 3 to 4 months to air dry. Drying Defects: The sapwood is prone to stain and there is a slight risk of cupping.
Calendrier de séchage en séchoir recommandé
UK-C; US-T3-C2
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
2.0
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1010
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
147341
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
538
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
125
Dureté Janka (extrémités) 12%TH (kgf)
894
OUVRABILITÉ
Sciage
Sawmilling is reportedly easy.
Usinage
Machining operations are rather difficult.
Rabotage
Planing operations are reported to be good provided a low cutting angle is used to reduce picking up of fibers in material with interlocked grain. Plantation grown material works somewhat easier.
Moulurage
Molding operations are rather as fair to difficult.
Tournage
30
Perçage
This species is easy to bore.
Mortaisage
Mortising operations are fair to difficult.
Clouage
Nailing properties are poor.
Finissage
Finishing of this species is reportedly good.
Compatibilité avec outils manuels
It has a poor response to hand tools.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, bridges, poles, stakes posts, rails, crossarms, crossties, HOUSING GENERAL, beams, flooring, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, axle
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Ponts
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Poteaux
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Piquets
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Rampe
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crosses
- 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
Traverses de chemin de fer
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Pouters
- 11 - Prospect: The wood database
Planchers
- 14 - Handbook of Hardwoods
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_manches
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Outils_agric
- 44 - Atlas of Peruvian Woods
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
Ports piliers
- 61 - Manual de Diseño para Maderas del Grupo Andino
Port entreposage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Essieux
- 73 - Handbook of Hardwoods
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