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Douka
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Names: MAKORE
Family: SAPOTACEAE
Scientific names: TIEGHEMELLA HECKELII / AFRICANA
Origin: WEST AFRICA – CENTRAL AFRICA
Family: SAPOTACEAE
Scientific names: TIEGHEMELLA HECKELII / AFRICANA
Origin: WEST AFRICA – CENTRAL AFRICA
WOOD DESCRIPTION
Reference color: red brown
Sapwood: very distinct
Grain: medium Grain:
straight or counter-grain
Counter-grain: marked but infrequent
Wood dark pink brown to dark red brown with sometimes purplish reflections and / or pale veins not very distinct. Often moiré.
PHYSICAL AND MECHANICAL PROPERTIES
These properties can vary significantly depending on the origin and growing conditions of the wood.
- Density *: 0.69
- Monnin hardness *: 4.0
- Coef. Volume shrinkage: 0.48%
- Stability in service: moderately stable to stable
- Total radial shrinkage: 5.6%
- Fiber saturation point: 28%
- Total tangential shrinkage: 7.3%
(*: 12% humidity)
NATURAL DURABILITY AND IMPREGNABILITY OF WOOD
- Mushrooms: cl 1 – very durable
- Dry wood insects: durable; distinct sapwood
- Termites: class D – durable
- Impregnability: 4 – not impregnable
- Biological risk class: 4 – in contact with the ground, or fresh water
Due to a high silica content, this gasoline naturally covers the biological risk class 5 (use in marine environment or brackish water).
SAWING AND MACHINING
- Blunting effect: significant
- Teeth for sawing: stellate teeth
- Machining tools: tungsten carbide
Very irritating dust. Sometimes clogging of the saw blades.
ASSEMBLY
- Nailing – Screwing: good hold, pre-boring necessary
- Gluing: correct
Tends to split when nailing. Gluing requires care (dense wood).
USES
- exterior and interior carpentry
- parquet
- stairs
- bridges
- paneling
- siding
- furniture
- light frame
- shipbuilding
- vehicle or container bottom
- sculpture
- turned items
Main known uses to be validated by implementation in accordance with the rules of the art. Important note: some uses are mentioned for information.
Source: CIRAD – ATIBT
REACTION TO FIRE
- French conventional classification: thickness> 14 mm: M.3 (moderately flammable) thickness <14 mm: M.4 (easily flammable)
- classification according to euroclasses: D s2 d0 This default classification concerns solid woods meeting the requirements of standard NF EN 14081-1 appendix C (May 2006), used in vertical walls. Namely structural wood, classified, with a minimum average density of 0.35 and a minimum thickness of 22 mm.
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