Durian

Botanical Name: Durio spp., Neesia spp., Bombax spp., Coelostegia spp., Kostermansia spp., Family: Bombaceae

Description and natural occurrence:
Total tree height is 40 m with a clear bole to 25 m and diameter from 1.0 to 2.0 m. The rough bark varies in colour from brown to dark red and decorates at irregular intervals. Many species of durian have low buttresses.
The trees occur throughout Burma, Malaysia and Indonesia. In many of these areas the durian fruit (which, despite its offensive smell, is considered a delicacy), is harvested every October/November. Ash of the fruit rind is used for bleaching silk.

Heartwood is pink-brown to deep, red-brown. Sapwood is lighter coloured and distinct in most species.
The grain varies between species from straight to interlocked. Texture is coarse and often uneven.

Uses: Construction. Light construction, plywood. Decorative. Internal Staircase, furniture, joinery, panelling, veneer.

Density 575-640 kg/m3
Strength Groups S4 unseasoned; SD4 seasoned
Stress Grades F7, F8, F11, F14, F17 (unseasoned), F11, F14, F17, F22 (seasoned)
Joint Groups JD4 seasoned
Shrinkage to 12% MC 4.0% (tangential); 3.0% (radial)
Unit Shrinkage Not available
Durability Above-ground Internal application uses only
Durability In-ground Not suitable for in-ground use
Lyctine Suceptibility Untreated sapwood susceptible to lyctid borer attack
Termite Resistance Not Resistant
Preservation Sapwood accepts preservative impregnation
Seasoning Durian seasons rapidly but has a tendency to cup
Hardness Firm (rated 4 on a 6 class scale)
Machining Machines well
Fixing Nails well
Gluing Can be satisfactorily bonded using standard procedures
Finishing Seasoned timber readily accepts paint, stand and polish