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PODOCARP (Dacrycarpus imbricatus)

Trade Name

Podocarp

Scientific Name

Dacrycarpus imbricatus (Blume) de Laub.

Family

PODOCARPACEAE

Common Names

Thong nang (Vietnam); Long leng (Laos); Phayamai (Thailand); Pek deng (Laos); Podo chucher atap (Malaysia); Sha-mo-pin (Myanmar); Kayu embun (Indonesia); Jamuju (Indonesia); Phaya-makhampom dong (Thailand); Podo (Malaysia); Black pine (Malaysia); Kayu cin (Malaysia); Melur (Indonesia); Podocarp (Papua New Guinea); Sempinur (Malaysia); Igem (Philippines)

Scientific Name Synonyms

Podocarpus kawaii Hayata; Podocarpus imbricata Blume

Description Of The Tree

Botanical Description

It is a large, majestic tree up to 50 m tall. The bole is up to 200 cm in diameter.

Natural Habitat

Dacrycarpus imbricatus is found scattered in rain forests from low elevation to about 3,000 m of altitude. It is a canopy or emergent tree in primary forests.

Natural Distribution

It occurs in Thailand, Java, Lesser Sunda Islands and occasionally Sulawesi and island of Borneo.

Wood Identification

Anatomic Description Of Wood

Occasionally axial parenchyma apparent with the naked eye. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. 4 to 10 rays per mm (medium). Occasionally rays exclusively uniseriate.

  • Wood Macro Photo Radial Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Odor

It has no taste or odor.

Color

The sapwood is hardly distinct, somewhat lighter in color than the heartwood. The heartwood is pale light yellowish brown, darkening to light golden brown, slight greenish tinge.

COLOR INDEX (1=Black, 7=Light yellow,white)

7

Grain

This species is reported to have straight grain.

Texture

The wood is frequently reported to be fine textured.

Luster

The surface of the wood is naturally moderate in luster.

Natural Durability

The natural durability in tropics is extremely doubtful, but fairly durable in moderate climates.

Natural durability index (1= Very high durability, 7=Vey low durability)

5

Silica Content

Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0

Resistance To Impregnation

The sapwood is permeable, heartwood penetration by preservatives is fair to good.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.50

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.54

Total shrinkage Tangential (Saturated to 0%MC) (%)

7.4

Total shrinkage Radial (Saturated to 0%MC) (%)

3.8

Drying Defects

Ease of Drying: Boards 15 mm thick take 2-3 months to air dry. Drying Defects: During drying the timber may be prone to checking and splitting. Kiln Schedules: Boards 25 mm thick can be kiln dried in 10 days from 50% to 10% moisture content.

Recommended Dry Kiln Schedule

UK-G

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

2.0

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

795

Stiffness (MOE) 12%MC (kgf/cm²)

93493

Compression parallel to fiber 12%MC (kgf/cm²)

479

Shear strength radial 12%MC (kgf/cm²)

122

Janka hardness (side) 12%MC (kgf)

363

Janka hardness (end grain) 12%MC (kgf)

570

Workability

Sawing

Cutting resistance is generally low.

Rotary Veneer Cutting

The peeling and slicing properties are rated as good with a negligible degrade upon drying. Pretreatment is not needed.

Sliced Veneer

The peeling and slicing properties are rated as good with a negligible degrade upon drying. Pretreatment is not needed.

Machining

This species is easy to machine.

Planing

Planing of this species is reported to be easy.

Moulding

Molding operations are rather easy.

Turning

30

Boring

The response of this species to boring operations is good to fair.

Mortising

This species is easy to mortise.

Nailing

Large nails may cause some splitting.

Gluing

It is reported to be easy to glue.

Sanding

It has a good sanding behavior.

Finishing

It has a good finishing.

Staining

This species is reported to be easy to stain.

Coatings

It is easy to paint or varnish.

Response To Hand Tools

It has a good response to hand tools.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, beams, boards, frames, steps, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, TOOLS, agricultural tools, PACKING, light packing, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts, pencil, matches, axle, moldings

General Housing
  • 10 - Silica in Timbers
Beams
  • 11 - Prospect: The wood database
Boards
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Frames
  • 16 - Woods of the World
Steps
  • 17 - Tree Conservation Database
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
  • 24 - Empire Timbers
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Turning
  • 30 - Embassy of Honduras in Japan
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Agricultural Tools
  • 44 - Atlas of Peruvian Woods
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Light Packing
  • 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America
Boats
  • 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Pencils
  • 67 - Maderas latinoamericanas. VIII, Calophyllum brasilense, Couratari panamensis, Dendropanax arboreum y Bombacopsis sessilis
Matches
  • 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Axles
  • 73 - Handbook of Hardwoods
Molding
  • 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão

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