BURCKELLA (Burckella macropoda)
Trade Name
Burckella
Scientific Name
Burckella macropoda (Krause) H.J. Lam
Family
SAPOTACEAE
Common Names
Rang rang (Papua New Guinea)
Scientific Name Synonyms
Illipe macropoda Krause; Croixia macropoda (Krause) Baehni
Description Of The Tree
Botanical Description
It is a medium-sized to fairly large tree, up to 40 m tall. The bole is branchless for up to 24 m and up to 65 cm in diameter. The buttresses are up to 2 m high.
Natural Habitat
This species usually grows in the primary forests, on the lowlands. In Papua New Guinea it is reported up to 1,000 of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits medium, 7 to 10 micras. Axial parenchyma reticulate. Occasionally siliceous bodies in the axial parenchyma. Rays more than 10 per mm (abundant). Silica bodies in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-I Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is pinkish-brown to red-brown, and not distinctly demarcated from the paler sapwood.
Grain
The grain is usually interlocked, sometimes straight.
Texture
The texture is moderately fine to coarse.
Natural Durability
The wood is moderately durable. Logs may be attacked by pinhole borers and termites.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Silica Content
Silica Content: It is reported to have silica. Contents over 0.05% may affect wood processing. Silica Value: 0
Resistance To Impregnation
The heartwood is resistant to preservative treatment, but the sapwood is permeable.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.70
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.79
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.3
Total shrinkage Radial (Saturated to 0%MC) (%)
5.0
Drying Defects
Ease of Drying: Shrinkage of the wood during seasoning is low. It seasons well. Drying Defects: Risk of little degrade and slight end-splitting.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1223
Stiffness (MOE) 12%MC (kgf/cm²)
143781
Workability
Sawing
The behavior of this species in sawing is considered to be fair to difficult.
Rotary Veneer Cutting
The peeling properties are usually poor, even when pre-heated.
Sliced Veneer
The peeling properties are usually poor, even when pre-heated.
Blunting Effect
This wood is reported to contain silica which might affect sawing.
Planing
Planing is reported to be easy.
Moulding
Molding is reported to be easy.
Boring
Boring operations are rather easy.
Mortising
Mortising of this species is reported to be easy.
Sanding
This species is reported to be easy to sand.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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