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DAO (Dracontomelon dao)
Nombre comercial
Dao
Nombre científico (con autor)
Dracontomelon dao Merrill & Rolfe
Familia
ANACARDIACEAE
Nombres Comunes
Dahu besar daum (Indonesia); Sengkuang (Malaysia); Sengkuang (Sabah); Sengkuang (Sarawak); Dahu (Indonesia); Sengkuang (Borneo); Mon (Papua New Guinea); New Guinea walnut (Papua New Guinea); Sarunsab (Sabah); Unkawang (Sarawak); Sengkuang (Malaysia); Maliyan (Philippines); Basuong (Indonesia); Ka-kho (Thailand); Sengkuang (Indonesia); Basuong (West Irian); Dao (Philippines); Sang-kuan (Thailand)
Nombres científicos sinónimos (con autores)
Dracontomelon sylvestre Blume; Dracontomelon puberulum Blume; Dracontomelon mangiferum Blume; Dracontomelon edule (Balnco) Skeels
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
It is a large tree up to 45 m tall. The bole is branchless for up to 20 m, up to 100 cm in diameter, with narrow buttresses up to 6 m high.
Hábitat natural
Dao occurs in primary or secondary evergreen to semideciduous forests, from the sea level up to 500 m of altitude.
Distribución natural
It is widely distributed in lowland New Guinea, New Britain and New Ireland as well as in the Philippines, Malaysia and Indonesia.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits coarse throughout the ray cell. Intervessel pits large, 10 micras or more. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. 4 to 10 rays per mm (medium). Prismatic crystals in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Septate fibers present. Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
It has no taste or odor.
Color
The sapwood is pale yellow, clearly defined. The heartwood is walnut brown, grayish-or greenish-yellow.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
The grain may be straight or interlocked.
Veta
Texture is reported to be medium to coarse.
Brillo
This species is moderate in luster.
Durabilidad Natural
This timber is not resistant to termite or marine borer attack.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
3
Internal growth stresses
Tension wood is sometimes present, giving rise to a slight woolly surface on sawn material.
Contenido de sílice
Silica Content: It is non-siliceous. Silica Value: 0
Dificultad para impregnar
The penetration of both sapwood and heartwood by preservatives evident is unsatisfactory.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.60
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.66
Contracción Tangencial Total (Saturado hasta anhidro) (%)
7.9
Contracción Radial Total (Saturado hasta anhidro) (%)
4.0
Defectos por secado
Drying Defects: It is reported that in seasoning the wood is liable to sap-stain and is subject to insect attack.
Calendario de Secado
JP-25
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.0
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1029
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
127986
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
510
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
92
Cizallamiento radial CH12% (kgf/cm²)
112
Dureza Janka (lados) CH12% (kgf)
513
Dureza Janka (extremos) CH12% (kgf)
569
TRABAJABILIDAD
Aserrado
It is easy unless hindered by interlocked grain.
Corte de chapa rotativa
It is useful as decorative veneer, and is easy to peel without pretreatment at a peeling angle of 91 degrees for 1.5-mm thick veneer.
Chapa tranchada
It is useful as decorative veneer, and is easy to peel without pretreatment at a peeling angle of 91 degrees for 1.5-mm thick veneer.
Maquinado general
Machining is easy if interlocked grain is not excessive.
Cepillado
Planing of this species is reported to be easy.
Torneado
30
Clavado
This wood is easy to nail.
Encolado
Gluing of this species is easy.
Acabado
Wood of this species is easy to finish.
Sacar lustre
This species is reported to be easy to polish.
Facilidad para herramientas manuales
It is easy to work with hand tools.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, flooring, panelling, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, Decorative veneer, TURNING, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, matches, moldings
VIVIENDA GENERAL
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Muebles finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
chapa decorativa
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneado
- 30 - Embassy of Honduras in Japan
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
OTROS E INSTRUMENTOS MUSICALES
- 63 - Madeiras do Brazil II
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Cerillas
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Molduras
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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