EYOUM

The name "eyoum" gathers several species of exotic African timber marketed under this name. They are light pinkish brown to very dark reddish brown, heavy to very heavy and hard to very hard.  Eyoum woods are very durable materials, especially used for the construction of railway sleepers and bridges, as well as for hydraulic works.

EYOUM
Botanical name(s) :

Dialium bipidense, Dialium dinklagei, Dialium aubrevillei, Dialium pachyphyllum

Family: FABACEAE-CAESALPINIOIDEAE (angiosperm)

Commercial restriction : no commercial restriction

Eyoum is a tree of the African tropical forests which measures 30 m in height and 1 m in diameter. It has sometimes buttresses. Its trunk is reddish brown, scaly and covered with a bark marked with small irregular scales.

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eyoum TIMBER USES

The tropical species eyoum is a very durable wood, used in heavy industry and construction for industrial flooring, heavy frames, vehicle, wagon and container bottoms. It is also used in exterior carpentry for exterior cladding and window frames.

The tropical timber eyoum can be used for the following products:

 

Structures and panels

  • Sliced veneer

Exterior joinery (building facade)

  • Cladding and outer coating
  • Windows and doors


Carpentry and interior fittings

  • Wooden floors


Outdoor equipment - Recreation

  • Exterior staircases and guard railing
  • Single-level terraces and pool areas
  • Elevated terraces, balconies and corridors


Industrial usage and heavy work

  • Structures and bridges in contact with soil or freshwater
  • Acoustic barriers in urban areas along railroads and highways
  • Sleepers and dunnage
  • Industrial floors and heavy framework
  • Vehicle, wagon and container bottom (or floor)

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DISTRIBUTION AREA of eyoum

The tropical species eyoum is found over a wide distribution area in Central Africa, from the southern part of Cameroon to the DRC.

ECOLOGY and Biology of eyoum

The tropical species eyoum is a non-gregarious, non-deciduous species found mainly in dense evergreen rainforests, as well as in semi-deciduous forests. It is a shade tolerant species and its hermaphroditic seeds are dispersed by animals from January to March.

DESCRIPTION OF eyoum TIMBER

  • Color: red brown
  • Sapwood: clearly demarcated
  • Texture: medium
  • Grain: straight or entangled
  • Interlocked grain: marked

eyoum: PHYSICAL AND MECHANICAL PROPERTIES

Read the Tropix sheet of eyoum (CIRAD).

eyoum: NATURAL DURABILITY AND TREATABILITY

  • Funghi: class 1 - very durable
  • Dry wood borers : durable - sapwood clearly demarcated (risk limited to sapwood)
  • Termites : class D - durable
  • Treatability: class 4 - not permeable
  • Use class ensured by natural durability: class 4 - in ground or fresh water contact
  • Species covering the use class 5: No

Read the Tropix sheet of eyoum (CIRAD).

PROCESSING OF eyoum TIMBER

Read the Tropix sheet of eyoum (CIRAD).

 

Sources :

  • CIRAD
  • ATIBT
  • Q. Meunier, C. Moumbogou, J.-L. Doucet, 2015, Les arbres utiles du Gabon

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