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MEMPENING (Quercus lineata)
Trade Name
Mempening
Scientific Name
Quercus lineata Blume
Family
FAGACEAE
Common Names
Pasang (Indonesia); Pasang jambe (Indonesia); Pasang emprit (Indonesia); Mempening batu (Malaysia)
Scientific Name Synonyms
Quercus glauca var. lineata (Blume) Franch.; Cyclobalanopsis lineata (Blume) Oerst.
Description Of The Tree
Botanical Description
It is a medium-sized tree up to 30 m tall. The bole is up to 80 cm in diameter, with steep buttresses up to 1.2 m high, sometimes suckering, often stilt-rooted.
Natural Habitat
Quercus lineata is reported in lower and upper montane forests, on yellow sandy or ultrabasic soils between 1,000 to 2,000 m of altitudinal range.
Wood Identification
Anatomic Description Of Wood
Vessels in diagonal and/or radial pattern. Vessels exclusively solitary (over 90%). Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Axial parenchyma in narrow Rays more than 10 per mm (abundant). Rays of two distinct sizes. Ray height more than 1 mm. Aggregated rays. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is gray-brown to reddish brown, sometimes with a yellow tinge, and clearly demarcated from the paler sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is straight or occasionally interlocked.
Texture
A medium to coarse texture is reported in this species.
Natural Durability
The wood is rated as moderately durable. The wood is reputed to be attacked by termites when it is in contact with the ground.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Internal Growth Stresses
Significant residual stresses are reported for this species.
Resistance To Impregnation
The heartwood is probably difficult to impregnate because of the presence of tyloses.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.83
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.96
Total shrinkage Tangential (Saturated to 0%MC) (%)
11.9
Total shrinkage Radial (Saturated to 0%MC) (%)
5.1
Recommended Dry Kiln Schedule
JP-32
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1327
Stiffness (MOE) 12%MC (kgf/cm²)
171590
Compression parallel to fiber 12%MC (kgf/cm²)
581
Shear strength radial 12%MC (kgf/cm²)
104
Janka hardness (side) 12%MC (kgf)
585
Janka hardness (end grain) 12%MC (kgf)
700
Workability
Sawing
Sawmilling of this species is reportedly easy.
Rotary Veneer Cutting
Slices and peels well when steamed. This species can be used for decorative veneer.
Sliced Veneer
Slices and peels well when steamed. This species can be used for decorative veneer.
Machining
It is easy to machine.
Nailing
It can split on nailing. Pre-boring is required.
Gluing
The timber is reported to glue well.
Finishing
This species is reported to take a smooth finish.
Steam Bending
This wood can be used for bending works.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, HOUSING GENERAL, beams, boards, flooring, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, Decorative veneer, TOOLS, tool handles, CONTAINERS, truck flooring
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
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
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
Decorative veneer
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
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