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LIMBALI (Gilbertiodendron dewevrei)
Trade Name
Limbali
Scientific Name
Gilbertiodendron dewevrei J.Leon.
Family
LEGUMINOSAE
Common Names
Mbombi (Sierra Leone); Vaa (Côte d`Ivoire); Bembé (Gabon); Abeum à grandes feuilles (Gabon); Epal (Congo); Bemba (Congo); Ligudu (Zaire); Ditshipi (Zaire); Limbali (Zaire); Abeum grandes feuilles (Gabon); Molapa (Central African Republic); Ekobem (Cameroon); Ekpagoi eze (Nigeria); Sehmeh (Liberia)
Scientific Name Synonyms
Macrolobium dewevrei De Wild
Description Of The Tree
Botanical Description
The tree reaches a height of 32 to 50 m, with trunk diameters of 100 to 150 cm. Although it has no buttresses, sometimes there is a slight thickening at the base of the trunk. The bole is straight and cylindrical.
Natural Habitat
Gilbertiodendron dewevrei is found in swampy forests and in dense forests on sandy soil. Also occurs along streams.
Natural Distribution
West and Central Africa, reported to be abundant in the Democratic Republic of the Congo.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Occasionally axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma lozenge-aliform. Axial parenchyma aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. Rays more than 10 per mm (abundant). Occasionally rays and/or axial elements irregularly storied. Rays exclusively uniseriate. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Non-septate fibers. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is greyish or yellowish, it has a thickness of 5 to 10 cm. The heartwood is copper brown, sometimes with dark veining, it is clearly demarcated.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
Texture is usually medium to coarse.
Natural Durability
Moderately durable to decay. Without preservative treatment, this species can be used only under risk of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. Moderately resistant to termites attack
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Internal Growth Stresses
Residual growth stresses are absent.
Silica Content
Silica Content: Silica is present. Amounts over 0.05% may affect wood processing. Silica Value: 0.06
Resistance To Impregnation
Difficult to treat with only a low penetration of the preservative products.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.72
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.82
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.0
Total shrinkage Radial (Saturated to 0%MC) (%)
4.6
Drying Defects
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of checks and distortions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
Recommended Dry Kiln Schedule
FR-6
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1406
Stiffness (MOE) 12%MC (kgf/cm²)
191526
Compression parallel to fiber 12%MC (kgf/cm²)
727
Compression perpendicular to fiber 12%MC (kgf/cm²)
102
Shear strength radial 12%MC (kgf/cm²)
107
Janka hardness (side) 12%MC (kgf)
835
Janka hardness (end grain) 12%MC (kgf)
906
Workability
Sawing
Sawing of this species requires powerful equipment.
Rotary Veneer Cutting
Not suitable for veneering.
Sliced Veneer
Not suitable for veneering.
Blunting Effect
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Machining
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Planing
Moderately easy; tools must be cautiously sharpened.
Moulding
Moderately easy; tools must be cautiously sharpened.
Turning
30
Boring
Moderately easy; tools must be cautiously sharpened.
Mortising
Moderately easy; tools must be cautiously sharpened.
Nailing
Pre-boring is necessary.
Gluing
Glues well if basic gluing technical rules are followed.
Sanding
Easy to perform; it gives good results.
Polishing
Needs pre-coating.
Response To Hand Tools
Working with hand tools is difficult.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, rails, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, TURNING, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boat deck, port storage
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Rails
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
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
Parquet
- 15 - Empire Timbers
Frames
- 16 - Woods of the World
Steps
- 17 - Tree Conservation Database
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
Fittings
- 19 - Silica in Timbers
Turning
- 30 - Embassy of Honduras in Japan
Truck Body
- 53 - Timbers of the New World
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boat Decking
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
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